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Gael J. Kergoat - One of the best experts on this subject based on the ideXlab platform.
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Toward an understanding of the systematics and evolution of the genus Acrapex Hampson, 1894 (Lepidoptera: Noctuidae: Apameini: Sesamiina): molecular phylogenetics of the genus and review of the species-rich Acrapex aenigma group
Annales de la Société Entomologique de France, 2020Co-Authors: Boaz K. Musyoka, Jérôme Barbut, Muluken Goftishu, Yoseph Assefa, Gilson Chipabika, Desmong Conlong, Beatrice Pallangyo, Mohamedi Njaku, George Ong’amo, Gael J. KergoatAbstract:Summary: With a species count reaching almost 100 species, the genus Acrapex is the most diverse genus of sesamiine stemborers (Lepidoptera: Noctuidae: Noctuinae: Apameini: Sesamiina). Acrapex species are mostly distributed in the Afrotropics and consist of several large clades corresponding to distinct species complexes. In this study, 45 morphologically similar species of Acrapex from sub-Saharan Africa are reviewed, including 22 new species that are described: Acrapex alemuran. sp., A. barnsin. sp., A. capelongon. sp., A. congoensisn. sp., A. elgonan. sp., A. elisabethianan. sp., A. eucanthan. sp., A. grandisn. sp., A. igominyin. sp., A. inexpectatan. sp., A. ketoman. sp., A. lilomwin. sp., A. mafingan. sp., A. maketen. sp., A. marungun. sp., A. mazoen. sp., A. mlanjen. sp., Acrapex muchingan. sp., A. ngorongoron. sp., A. obscuran. sp., A. ruirun. sp. and A. wittein. sp. Supplemental descriptions for previously described species are provided as well. These 45 species are assigned to the newly defined Acrapex aenigma species group. We also conduct molecular phylogenetic analyses and molecular species delimitation analyses on a multi-marker (four mitochondrial and two nuclear genes) molecular dataset encompassing 304 specimens (including 256 Acrapex specimens from 54 species of which 16 species belong to the A. aenigma group). Molecular phylogenetics analyses recover well-supported relationships within Acrapex and support the monophyly of the newly defined group. Results of molecular species delimitation analyses are mostly congruent and tend to corroborate the status of the sampled Acrapex species. Consistent with what has been previously found in other studies, the comparison of results from distinct methods and settings for molecular species delimitation analyses allows us to assess species boundaries with more confidence.
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Re-establishment of Spodoptera teferii Laporte in Rougeot (Lepidoptera: Noctuidae, Noctuinae), with an updated molecular phylogeny for the genus Spodoptera Guenée
Annales de la Société entomologique de France (N.S.), 2018Co-Authors: Jérôme Barbut, Claire Capdevielle-dulac, Muluken Goftishu, Gael J. KergoatAbstract:SummaryThe genus Spodoptera Guenee (Lepidoptera: Noctuidae, Noctuinae) is a group of economic importance which encompasses several major pests of crops worldwide. Although this genus has been the f...
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Re-establishment of Spodoptera teferii Laporte in Rougeot (Lepidoptera: Noctuidae, Noctuinae), with an updated molecular phylogeny for the genus Spodoptera Guenee
Annales de la Société Entomologique de France, 2018Co-Authors: Jérôme Barbut, Claire Capdevielle-dulac, Muluken Goftishu, Gael J. KergoatAbstract:The genus Spodoptera Guenee (Lepidoptera: Noctuidae, Noctuinae) is a group of economic importance which encompasses several major pests of crops worldwide. Although this genus has been the focus of many studies, the status of several Spodoptera species is still unstable, especially in the light of recent molecular analyses. In 2015 five Spodoptera specimens collected in Ethiopia were first identified as S. apertura (Walker). However, preliminary studies suggested that these specimens belong to a distinct species, S. teferii Laporte in Rougeot, which has been previously synonymized with S. apertura. In this study, on the basis of morphological and molecular evidence, we re-establish the species status of S. teferii. We provide a supplemental description of S. teferii male and the first description of S. teferii female. We also conducted several molecular analyses. First, we reconstructed an updated phylogeny for the genus based on a multilocus dataset (four mitochondrial and three nuclear gene fragments) including S. teferii and 28 of the 31 currently recognized Spodoptera species; the results of phylogenetic analyses support the hypothesis that S. teferii is more closely related to the clade encompassing S. littoralis (Boisduval), S. litura (Fabricius), S. pectinicornis (Hampson) and S. picta (Guerin-Meneville) than to S. apertura. Second, we carried out molecular species delimitation analyses on a 683-specimen dataset that also clearly support the status of S. teferii as a species distinct to S. apertura.
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Molecular phylogenetics and definition of the Acrapex minima Janse group (Lepidoptera, Noctuidae, Apameini, Sesamiina) with the description of four new species from the Afrotropics
Annales de la Société Entomologique de France, 2017Co-Authors: Claire Capdevielle-dulac, Muluken Goftishu, Boaz K. Musyoka, Yoseph Assefa, Rose Ndemah, Richard Molo, Gilson Chipabika, Desmong Conlong, George Ong'amo, Gael J. KergoatAbstract:Five morphologically similar species of Acrapex Hampson (Lepidoptera, Noctuidae, Noctuinae, Apameini), from sub-Saharan Africa are reviewed, including four new species that are described: Acrapex mondogeneta Le Ru n. sp., A. mubale Le Ru n. sp., A. robe Le Ru n. sp. and A. rubona Le Ru n. sp. These five species belong to a species complex that we hereby define as the Acrapex minima group. Host plants of three species are recorded; Acrapex minima is recorded for the first time on a host plant, Digitaria natalensis Stent; A. mondogeneta on Hyparrhenia hirta (L.) Stapf and A. rubona on Imperata cylindrica (L.) P. Beauv. We also conducted molecular phylogenetics (using both Bayesian inference and maximum likelihood) and molecular species delimitation analyses (Poisson tree processes) on a six gene multi-marker dataset (four mitochondrial and two nuclear gene fragments; 4582 nucleotides in length) of 42 specimens and 22 species, including 23 specimens from the Acrapex minima group. The results of the corresponding analyses support the monophyly of the group and the species status of the newly described taxa.
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Phylogeny and systematics of the Acrapex apicestriata (Bethune-Baker, 1911) species complex (Lepidoptera, Noctuidae, Noctuinae, Apameini, Sesamiina) with the description of eight new species from the Afrotropics
Annales de la Société Entomologique de France, 2017Co-Authors: Claire Capdevielle-dulac, Muluken Goftishu, Boaz K. Musyoka, Yoseph Assefa, George Ong'amo, Beatrice Pallangyo, Mohamedi Njaku, Michel Sezonlin, Gael J. KergoatAbstract:Twelve morphologically similar species of Acrapex Hampson 1894, (Lepidoptera, Noctuidae, Noctuinae, Apameini, Sesamiina), from Western, Central and Eastern Africa are reviewed. Eight of these species are new to science and are described: Acrapex akunamatatan. sp. and A. incrassata n. sp. from Kenya; A. gracilis n. sp., A. iringa n. sp., A. lukumbura n. sp. and A. rungwe n. sp. from Tanzania; A. soyema n. sp. from Ethiopia; and A. zoutoi n. sp. from Benin. All 12 species belong to a species complex that we hereby define as the Acrapex apicestriata group. Host-plants for three of the new species are recorded: Setaria incrassata (Hochst.) Hack. for Acrapex incrassata; Cymbopogon pospishilii (K. Schum.) C.E. Hubb. for A. rungwe; and Andropogon perligulatus Stapf. for A. zoutoi. We also conducted molecular phylogenetic analyses (using maximum likelihood and Bayesian inference) on a six gene multimarker molecular dataset (four mitochondrial and two nuclear gene fragments; 4581 nucleotides in length) consisting of 15 Acrapex species (including seven species from the apicestriata group) and four outgroups species from the subtribe Sesamiina (from genera Busseola Thurau 1904, Sciomesa Tams & Bowden 1953, Pirateolea Moyal, Le Ru, Conlong, Cugala, Defabachew, Matama-Kauma, Pallangyo & Van den Berg 2010 and Sesamia Boisduval & Guenee 1852). Both maximum likelihood and Bayesian inference analyses yield a similar and well-supported topology, which supports the monophyly of the apicestriata group.
Claire Capdevielle-dulac - One of the best experts on this subject based on the ideXlab platform.
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Updated phylogenetic and systematics of the Acrapex albivena Hampson, 1910 and A. stygiata (Hampson, 1910) species groups (Lepidoptera, Noctuidae, Noctuinae, Apameini, Sesamiina), with the description of nine new species from the Afrotropics
Annales de la Société Entomologique de France, 2019Co-Authors: Boaz K. Musyoka, Claire Capdevielle-dulac, Muluken Goftishu, Yoseph Assefa, Gilson Chipabika, Desmong Conlong, Beatrice Pallangyo, Mohamedi Njaku, George Ong’amo, Jérôme BarbutAbstract:The genus Acrapex Hampson, 1891 (Lepidoptera, Noctuidae, Noctuinae, Apameini, Sesamiina) constitutes a speciose group of noctuid stemborers mostly distributed in the Afrotropics. In this study nine new Acrapex species are described: Acrapex abyssinica n. sp., Acrapex dabaga n. sp., Acrapex jansei n. sp., Acrapex kifanya n. sp., Acrapex lusinga n. sp., Acrapex ngwenya n. sp., Acrapex njombea n. sp., Acrapex vetiveria n. sp. and Acrapex zima n. sp. All species are assigned to the A. albivena group with the exception of A. lusinga which is assigned to the A. stygiata group. We also provide supplemental descriptions for two previously described species of the A. albivena group, A. punctosa Berio, 1973 and A. sysciodes Berio, 1973, and for one species belonging to the A. stygiata group: A. brunneella Le Ru, 2014. Host plants of three species are recorded; A. brunneella and Acrapex jansei were reared on Cymbopogon pospischilii (K.Schum.) C.E.Hubb and A. vetiveria on Chrysopogon zizanioides (L.). We also conducted molecular phylogenetic analyses (using both Bayesian inference and maximum likelihood) on a multi-marker (four mitochondrial and two nuclear genes) molecular dataset encompassing 138 specimens (including 98 specimens from the A. albivena group and 23 specimens from the A. stygiata group) from 48 stemborer species. The results of the corresponding analyses support the monophyly of the two groups of interest and the species status of all newly described taxa, except for A. lusinga that was not sequenced. The phylogenetic analyses also unravel several evolutionary lineages whose precise status is pending because their DNA was extracted from larval stages.
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Re-establishment of Spodoptera teferii Laporte in Rougeot (Lepidoptera: Noctuidae, Noctuinae), with an updated molecular phylogeny for the genus Spodoptera Guenée
Annales de la Société entomologique de France (N.S.), 2018Co-Authors: Jérôme Barbut, Claire Capdevielle-dulac, Muluken Goftishu, Gael J. KergoatAbstract:SummaryThe genus Spodoptera Guenee (Lepidoptera: Noctuidae, Noctuinae) is a group of economic importance which encompasses several major pests of crops worldwide. Although this genus has been the f...
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Re-establishment of Spodoptera teferii Laporte in Rougeot (Lepidoptera: Noctuidae, Noctuinae), with an updated molecular phylogeny for the genus Spodoptera Guenee
Annales de la Société Entomologique de France, 2018Co-Authors: Jérôme Barbut, Claire Capdevielle-dulac, Muluken Goftishu, Gael J. KergoatAbstract:The genus Spodoptera Guenee (Lepidoptera: Noctuidae, Noctuinae) is a group of economic importance which encompasses several major pests of crops worldwide. Although this genus has been the focus of many studies, the status of several Spodoptera species is still unstable, especially in the light of recent molecular analyses. In 2015 five Spodoptera specimens collected in Ethiopia were first identified as S. apertura (Walker). However, preliminary studies suggested that these specimens belong to a distinct species, S. teferii Laporte in Rougeot, which has been previously synonymized with S. apertura. In this study, on the basis of morphological and molecular evidence, we re-establish the species status of S. teferii. We provide a supplemental description of S. teferii male and the first description of S. teferii female. We also conducted several molecular analyses. First, we reconstructed an updated phylogeny for the genus based on a multilocus dataset (four mitochondrial and three nuclear gene fragments) including S. teferii and 28 of the 31 currently recognized Spodoptera species; the results of phylogenetic analyses support the hypothesis that S. teferii is more closely related to the clade encompassing S. littoralis (Boisduval), S. litura (Fabricius), S. pectinicornis (Hampson) and S. picta (Guerin-Meneville) than to S. apertura. Second, we carried out molecular species delimitation analyses on a 683-specimen dataset that also clearly support the status of S. teferii as a species distinct to S. apertura.
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Molecular phylogenetics and definition of the Acrapex minima Janse group (Lepidoptera, Noctuidae, Apameini, Sesamiina) with the description of four new species from the Afrotropics
Annales de la Société Entomologique de France, 2017Co-Authors: Claire Capdevielle-dulac, Muluken Goftishu, Boaz K. Musyoka, Yoseph Assefa, Rose Ndemah, Richard Molo, Gilson Chipabika, Desmong Conlong, George Ong'amo, Gael J. KergoatAbstract:Five morphologically similar species of Acrapex Hampson (Lepidoptera, Noctuidae, Noctuinae, Apameini), from sub-Saharan Africa are reviewed, including four new species that are described: Acrapex mondogeneta Le Ru n. sp., A. mubale Le Ru n. sp., A. robe Le Ru n. sp. and A. rubona Le Ru n. sp. These five species belong to a species complex that we hereby define as the Acrapex minima group. Host plants of three species are recorded; Acrapex minima is recorded for the first time on a host plant, Digitaria natalensis Stent; A. mondogeneta on Hyparrhenia hirta (L.) Stapf and A. rubona on Imperata cylindrica (L.) P. Beauv. We also conducted molecular phylogenetics (using both Bayesian inference and maximum likelihood) and molecular species delimitation analyses (Poisson tree processes) on a six gene multi-marker dataset (four mitochondrial and two nuclear gene fragments; 4582 nucleotides in length) of 42 specimens and 22 species, including 23 specimens from the Acrapex minima group. The results of the corresponding analyses support the monophyly of the group and the species status of the newly described taxa.
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Phylogeny and systematics of the Acrapex apicestriata (Bethune-Baker, 1911) species complex (Lepidoptera, Noctuidae, Noctuinae, Apameini, Sesamiina) with the description of eight new species from the Afrotropics
Annales de la Société Entomologique de France, 2017Co-Authors: Claire Capdevielle-dulac, Muluken Goftishu, Boaz K. Musyoka, Yoseph Assefa, George Ong'amo, Beatrice Pallangyo, Mohamedi Njaku, Michel Sezonlin, Gael J. KergoatAbstract:Twelve morphologically similar species of Acrapex Hampson 1894, (Lepidoptera, Noctuidae, Noctuinae, Apameini, Sesamiina), from Western, Central and Eastern Africa are reviewed. Eight of these species are new to science and are described: Acrapex akunamatatan. sp. and A. incrassata n. sp. from Kenya; A. gracilis n. sp., A. iringa n. sp., A. lukumbura n. sp. and A. rungwe n. sp. from Tanzania; A. soyema n. sp. from Ethiopia; and A. zoutoi n. sp. from Benin. All 12 species belong to a species complex that we hereby define as the Acrapex apicestriata group. Host-plants for three of the new species are recorded: Setaria incrassata (Hochst.) Hack. for Acrapex incrassata; Cymbopogon pospishilii (K. Schum.) C.E. Hubb. for A. rungwe; and Andropogon perligulatus Stapf. for A. zoutoi. We also conducted molecular phylogenetic analyses (using maximum likelihood and Bayesian inference) on a six gene multimarker molecular dataset (four mitochondrial and two nuclear gene fragments; 4581 nucleotides in length) consisting of 15 Acrapex species (including seven species from the apicestriata group) and four outgroups species from the subtribe Sesamiina (from genera Busseola Thurau 1904, Sciomesa Tams & Bowden 1953, Pirateolea Moyal, Le Ru, Conlong, Cugala, Defabachew, Matama-Kauma, Pallangyo & Van den Berg 2010 and Sesamia Boisduval & Guenee 1852). Both maximum likelihood and Bayesian inference analyses yield a similar and well-supported topology, which supports the monophyly of the apicestriata group.
Jérôme Barbut - One of the best experts on this subject based on the ideXlab platform.
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Toward an understanding of the systematics and evolution of the genus Acrapex Hampson, 1894 (Lepidoptera: Noctuidae: Apameini: Sesamiina): molecular phylogenetics of the genus and review of the species-rich Acrapex aenigma group
Annales de la Société Entomologique de France, 2020Co-Authors: Boaz K. Musyoka, Jérôme Barbut, Muluken Goftishu, Yoseph Assefa, Gilson Chipabika, Desmong Conlong, Beatrice Pallangyo, Mohamedi Njaku, George Ong’amo, Gael J. KergoatAbstract:Summary: With a species count reaching almost 100 species, the genus Acrapex is the most diverse genus of sesamiine stemborers (Lepidoptera: Noctuidae: Noctuinae: Apameini: Sesamiina). Acrapex species are mostly distributed in the Afrotropics and consist of several large clades corresponding to distinct species complexes. In this study, 45 morphologically similar species of Acrapex from sub-Saharan Africa are reviewed, including 22 new species that are described: Acrapex alemuran. sp., A. barnsin. sp., A. capelongon. sp., A. congoensisn. sp., A. elgonan. sp., A. elisabethianan. sp., A. eucanthan. sp., A. grandisn. sp., A. igominyin. sp., A. inexpectatan. sp., A. ketoman. sp., A. lilomwin. sp., A. mafingan. sp., A. maketen. sp., A. marungun. sp., A. mazoen. sp., A. mlanjen. sp., Acrapex muchingan. sp., A. ngorongoron. sp., A. obscuran. sp., A. ruirun. sp. and A. wittein. sp. Supplemental descriptions for previously described species are provided as well. These 45 species are assigned to the newly defined Acrapex aenigma species group. We also conduct molecular phylogenetic analyses and molecular species delimitation analyses on a multi-marker (four mitochondrial and two nuclear genes) molecular dataset encompassing 304 specimens (including 256 Acrapex specimens from 54 species of which 16 species belong to the A. aenigma group). Molecular phylogenetics analyses recover well-supported relationships within Acrapex and support the monophyly of the newly defined group. Results of molecular species delimitation analyses are mostly congruent and tend to corroborate the status of the sampled Acrapex species. Consistent with what has been previously found in other studies, the comparison of results from distinct methods and settings for molecular species delimitation analyses allows us to assess species boundaries with more confidence.
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Updated phylogenetic and systematics of the Acrapex albivena Hampson, 1910 and A. stygiata (Hampson, 1910) species groups (Lepidoptera, Noctuidae, Noctuinae, Apameini, Sesamiina), with the description of nine new species from the Afrotropics
Annales de la Société Entomologique de France, 2019Co-Authors: Boaz K. Musyoka, Claire Capdevielle-dulac, Muluken Goftishu, Yoseph Assefa, Gilson Chipabika, Desmong Conlong, Beatrice Pallangyo, Mohamedi Njaku, George Ong’amo, Jérôme BarbutAbstract:The genus Acrapex Hampson, 1891 (Lepidoptera, Noctuidae, Noctuinae, Apameini, Sesamiina) constitutes a speciose group of noctuid stemborers mostly distributed in the Afrotropics. In this study nine new Acrapex species are described: Acrapex abyssinica n. sp., Acrapex dabaga n. sp., Acrapex jansei n. sp., Acrapex kifanya n. sp., Acrapex lusinga n. sp., Acrapex ngwenya n. sp., Acrapex njombea n. sp., Acrapex vetiveria n. sp. and Acrapex zima n. sp. All species are assigned to the A. albivena group with the exception of A. lusinga which is assigned to the A. stygiata group. We also provide supplemental descriptions for two previously described species of the A. albivena group, A. punctosa Berio, 1973 and A. sysciodes Berio, 1973, and for one species belonging to the A. stygiata group: A. brunneella Le Ru, 2014. Host plants of three species are recorded; A. brunneella and Acrapex jansei were reared on Cymbopogon pospischilii (K.Schum.) C.E.Hubb and A. vetiveria on Chrysopogon zizanioides (L.). We also conducted molecular phylogenetic analyses (using both Bayesian inference and maximum likelihood) on a multi-marker (four mitochondrial and two nuclear genes) molecular dataset encompassing 138 specimens (including 98 specimens from the A. albivena group and 23 specimens from the A. stygiata group) from 48 stemborer species. The results of the corresponding analyses support the monophyly of the two groups of interest and the species status of all newly described taxa, except for A. lusinga that was not sequenced. The phylogenetic analyses also unravel several evolutionary lineages whose precise status is pending because their DNA was extracted from larval stages.
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Re-establishment of Spodoptera teferii Laporte in Rougeot (Lepidoptera: Noctuidae, Noctuinae), with an updated molecular phylogeny for the genus Spodoptera Guenée
Annales de la Société entomologique de France (N.S.), 2018Co-Authors: Jérôme Barbut, Claire Capdevielle-dulac, Muluken Goftishu, Gael J. KergoatAbstract:SummaryThe genus Spodoptera Guenee (Lepidoptera: Noctuidae, Noctuinae) is a group of economic importance which encompasses several major pests of crops worldwide. Although this genus has been the f...
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Re-establishment of Spodoptera teferii Laporte in Rougeot (Lepidoptera: Noctuidae, Noctuinae), with an updated molecular phylogeny for the genus Spodoptera Guenee
Annales de la Société Entomologique de France, 2018Co-Authors: Jérôme Barbut, Claire Capdevielle-dulac, Muluken Goftishu, Gael J. KergoatAbstract:The genus Spodoptera Guenee (Lepidoptera: Noctuidae, Noctuinae) is a group of economic importance which encompasses several major pests of crops worldwide. Although this genus has been the focus of many studies, the status of several Spodoptera species is still unstable, especially in the light of recent molecular analyses. In 2015 five Spodoptera specimens collected in Ethiopia were first identified as S. apertura (Walker). However, preliminary studies suggested that these specimens belong to a distinct species, S. teferii Laporte in Rougeot, which has been previously synonymized with S. apertura. In this study, on the basis of morphological and molecular evidence, we re-establish the species status of S. teferii. We provide a supplemental description of S. teferii male and the first description of S. teferii female. We also conducted several molecular analyses. First, we reconstructed an updated phylogeny for the genus based on a multilocus dataset (four mitochondrial and three nuclear gene fragments) including S. teferii and 28 of the 31 currently recognized Spodoptera species; the results of phylogenetic analyses support the hypothesis that S. teferii is more closely related to the clade encompassing S. littoralis (Boisduval), S. litura (Fabricius), S. pectinicornis (Hampson) and S. picta (Guerin-Meneville) than to S. apertura. Second, we carried out molecular species delimitation analyses on a 683-specimen dataset that also clearly support the status of S. teferii as a species distinct to S. apertura.
Emmanuelle D'alençon - One of the best experts on this subject based on the ideXlab platform.
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Molecular determinism of ecological adaptation and speciation in the Lepidoptera Spodoptera frugiperda
2017Co-Authors: Emmanuelle D'alençonAbstract:Molecular determinism of ecological adaptation and speciation in the Lepidoptera [i]Spodoptera frugiperda [/i]. at the International Conference on Management of Destructive Agricultural Pests Spodoptera (Noctuidae)
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Questioning the status of the two FAW (Spodoptera frugiperda, Noctuidae) host races using integrative approaches
2015Co-Authors: Emmanuelle D'alençonAbstract:Questioning the status of the two FAW ([i]Spodoptera frugiperda[/i], [i]Noctuidae[/i]) host races using integrative approaches . International Meeting on Spodoptera litura genome project
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Questioning the status of the two FAW (Spodoptera frugiperda, Noctuidae) host races using integrative approaches
2014Co-Authors: Emmanuelle D'alençonAbstract:Questioning the status of the two FAW ([i]Spodoptera frugiperda, Noctuidae[/i]) host races using integrative approaches. The Seventh International Symposium on Molecular Insect Science
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Questioning the status of the two FAW (Spodoptera frugiperda, Noctuidae) host races using integrative approaches
2014Co-Authors: Emmanuelle D'alençon, Pascaline DumasAbstract:Questioning the status of the two FAW ([i]Spodoptera frugiperda, Noctuidae)[/i] host races using integrative approaches. Colloque du reseau ADALEP (Adaptation a l’environnement biotique chez les lepidopteres)
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Questioning the status of the two FAW (Spodoptera frugiperda, Noctuidae) host races using integrative approaches
2014Co-Authors: Emmanuelle D'alençon, Pascaline DumasAbstract:Questioning the status of the two FAW ([i]Spodoptera frugiperda, Noctuidae)[/i] host races using integrative approaches. Colloque du réseau ADALEP (Adaptation à l’environnement biotique chez les lépidoptères)
Muluken Goftishu - One of the best experts on this subject based on the ideXlab platform.
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Toward an understanding of the systematics and evolution of the genus Acrapex Hampson, 1894 (Lepidoptera: Noctuidae: Apameini: Sesamiina): molecular phylogenetics of the genus and review of the species-rich Acrapex aenigma group
Annales de la Société Entomologique de France, 2020Co-Authors: Boaz K. Musyoka, Jérôme Barbut, Muluken Goftishu, Yoseph Assefa, Gilson Chipabika, Desmong Conlong, Beatrice Pallangyo, Mohamedi Njaku, George Ong’amo, Gael J. KergoatAbstract:Summary: With a species count reaching almost 100 species, the genus Acrapex is the most diverse genus of sesamiine stemborers (Lepidoptera: Noctuidae: Noctuinae: Apameini: Sesamiina). Acrapex species are mostly distributed in the Afrotropics and consist of several large clades corresponding to distinct species complexes. In this study, 45 morphologically similar species of Acrapex from sub-Saharan Africa are reviewed, including 22 new species that are described: Acrapex alemuran. sp., A. barnsin. sp., A. capelongon. sp., A. congoensisn. sp., A. elgonan. sp., A. elisabethianan. sp., A. eucanthan. sp., A. grandisn. sp., A. igominyin. sp., A. inexpectatan. sp., A. ketoman. sp., A. lilomwin. sp., A. mafingan. sp., A. maketen. sp., A. marungun. sp., A. mazoen. sp., A. mlanjen. sp., Acrapex muchingan. sp., A. ngorongoron. sp., A. obscuran. sp., A. ruirun. sp. and A. wittein. sp. Supplemental descriptions for previously described species are provided as well. These 45 species are assigned to the newly defined Acrapex aenigma species group. We also conduct molecular phylogenetic analyses and molecular species delimitation analyses on a multi-marker (four mitochondrial and two nuclear genes) molecular dataset encompassing 304 specimens (including 256 Acrapex specimens from 54 species of which 16 species belong to the A. aenigma group). Molecular phylogenetics analyses recover well-supported relationships within Acrapex and support the monophyly of the newly defined group. Results of molecular species delimitation analyses are mostly congruent and tend to corroborate the status of the sampled Acrapex species. Consistent with what has been previously found in other studies, the comparison of results from distinct methods and settings for molecular species delimitation analyses allows us to assess species boundaries with more confidence.
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Updated phylogenetic and systematics of the Acrapex albivena Hampson, 1910 and A. stygiata (Hampson, 1910) species groups (Lepidoptera, Noctuidae, Noctuinae, Apameini, Sesamiina), with the description of nine new species from the Afrotropics
Annales de la Société Entomologique de France, 2019Co-Authors: Boaz K. Musyoka, Claire Capdevielle-dulac, Muluken Goftishu, Yoseph Assefa, Gilson Chipabika, Desmong Conlong, Beatrice Pallangyo, Mohamedi Njaku, George Ong’amo, Jérôme BarbutAbstract:The genus Acrapex Hampson, 1891 (Lepidoptera, Noctuidae, Noctuinae, Apameini, Sesamiina) constitutes a speciose group of noctuid stemborers mostly distributed in the Afrotropics. In this study nine new Acrapex species are described: Acrapex abyssinica n. sp., Acrapex dabaga n. sp., Acrapex jansei n. sp., Acrapex kifanya n. sp., Acrapex lusinga n. sp., Acrapex ngwenya n. sp., Acrapex njombea n. sp., Acrapex vetiveria n. sp. and Acrapex zima n. sp. All species are assigned to the A. albivena group with the exception of A. lusinga which is assigned to the A. stygiata group. We also provide supplemental descriptions for two previously described species of the A. albivena group, A. punctosa Berio, 1973 and A. sysciodes Berio, 1973, and for one species belonging to the A. stygiata group: A. brunneella Le Ru, 2014. Host plants of three species are recorded; A. brunneella and Acrapex jansei were reared on Cymbopogon pospischilii (K.Schum.) C.E.Hubb and A. vetiveria on Chrysopogon zizanioides (L.). We also conducted molecular phylogenetic analyses (using both Bayesian inference and maximum likelihood) on a multi-marker (four mitochondrial and two nuclear genes) molecular dataset encompassing 138 specimens (including 98 specimens from the A. albivena group and 23 specimens from the A. stygiata group) from 48 stemborer species. The results of the corresponding analyses support the monophyly of the two groups of interest and the species status of all newly described taxa, except for A. lusinga that was not sequenced. The phylogenetic analyses also unravel several evolutionary lineages whose precise status is pending because their DNA was extracted from larval stages.
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Re-establishment of Spodoptera teferii Laporte in Rougeot (Lepidoptera: Noctuidae, Noctuinae), with an updated molecular phylogeny for the genus Spodoptera Guenée
Annales de la Société entomologique de France (N.S.), 2018Co-Authors: Jérôme Barbut, Claire Capdevielle-dulac, Muluken Goftishu, Gael J. KergoatAbstract:SummaryThe genus Spodoptera Guenee (Lepidoptera: Noctuidae, Noctuinae) is a group of economic importance which encompasses several major pests of crops worldwide. Although this genus has been the f...
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Re-establishment of Spodoptera teferii Laporte in Rougeot (Lepidoptera: Noctuidae, Noctuinae), with an updated molecular phylogeny for the genus Spodoptera Guenee
Annales de la Société Entomologique de France, 2018Co-Authors: Jérôme Barbut, Claire Capdevielle-dulac, Muluken Goftishu, Gael J. KergoatAbstract:The genus Spodoptera Guenee (Lepidoptera: Noctuidae, Noctuinae) is a group of economic importance which encompasses several major pests of crops worldwide. Although this genus has been the focus of many studies, the status of several Spodoptera species is still unstable, especially in the light of recent molecular analyses. In 2015 five Spodoptera specimens collected in Ethiopia were first identified as S. apertura (Walker). However, preliminary studies suggested that these specimens belong to a distinct species, S. teferii Laporte in Rougeot, which has been previously synonymized with S. apertura. In this study, on the basis of morphological and molecular evidence, we re-establish the species status of S. teferii. We provide a supplemental description of S. teferii male and the first description of S. teferii female. We also conducted several molecular analyses. First, we reconstructed an updated phylogeny for the genus based on a multilocus dataset (four mitochondrial and three nuclear gene fragments) including S. teferii and 28 of the 31 currently recognized Spodoptera species; the results of phylogenetic analyses support the hypothesis that S. teferii is more closely related to the clade encompassing S. littoralis (Boisduval), S. litura (Fabricius), S. pectinicornis (Hampson) and S. picta (Guerin-Meneville) than to S. apertura. Second, we carried out molecular species delimitation analyses on a 683-specimen dataset that also clearly support the status of S. teferii as a species distinct to S. apertura.
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Molecular phylogenetics and definition of the Acrapex minima Janse group (Lepidoptera, Noctuidae, Apameini, Sesamiina) with the description of four new species from the Afrotropics
Annales de la Société Entomologique de France, 2017Co-Authors: Claire Capdevielle-dulac, Muluken Goftishu, Boaz K. Musyoka, Yoseph Assefa, Rose Ndemah, Richard Molo, Gilson Chipabika, Desmong Conlong, George Ong'amo, Gael J. KergoatAbstract:Five morphologically similar species of Acrapex Hampson (Lepidoptera, Noctuidae, Noctuinae, Apameini), from sub-Saharan Africa are reviewed, including four new species that are described: Acrapex mondogeneta Le Ru n. sp., A. mubale Le Ru n. sp., A. robe Le Ru n. sp. and A. rubona Le Ru n. sp. These five species belong to a species complex that we hereby define as the Acrapex minima group. Host plants of three species are recorded; Acrapex minima is recorded for the first time on a host plant, Digitaria natalensis Stent; A. mondogeneta on Hyparrhenia hirta (L.) Stapf and A. rubona on Imperata cylindrica (L.) P. Beauv. We also conducted molecular phylogenetics (using both Bayesian inference and maximum likelihood) and molecular species delimitation analyses (Poisson tree processes) on a six gene multi-marker dataset (four mitochondrial and two nuclear gene fragments; 4582 nucleotides in length) of 42 specimens and 22 species, including 23 specimens from the Acrapex minima group. The results of the corresponding analyses support the monophyly of the group and the species status of the newly described taxa.
