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Douglas J. Williams - One of the best experts on this subject based on the ideXlab platform.
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The mealybug Trionymus angustifrons Hall transferred to Dysmicoccus Ferris with new synonymy (Hemiptera, Sternorrhyncha, Coccomorpha, Pseudococcidae).
2020Co-Authors: Danièle Matile-ferrero, Douglas J. Williams, Mehmet Bora KaydanAbstract:La pseudococcine Trionymus angustifrons Hall transferee dans le genre Dysmicoccus Ferris avec deux nouveaux synonymes (Hemiptera, Sternorrhyncha, Coccomorpha, Pseudococcidae). Trionymus angustifrons Hall, 1926, est transfere dans le genre Dysmicoccus Ferris, 1950, et devient Dysmicoccus angustifrons (Hall, 1926), n. comb. Sont mis en synonymie Pseudococcus multivorus Kiritchenko, 1936, et P. lanatus Balachowsky, 1932, n. syn. avec Dysmicoccus angustifrons (Hall, 1926), espece appartenant a un groupe possedant un nombre reduit de cerarii et des glandes tubulaires dorsales et ventrales de deux tailles. Des lectotypes sont designes pour Trionymus angustifrons et Pseudococcus lanatus. L’Espagne et la Grece continentale sont de nouveaux signalements pour l’espece.
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SCALE INSECTS OF ALDABRA [ HEMIPTERA, Sternorrhyncha, COCCOIDEA ]
2020Co-Authors: Douglas J. Williams, Danièle Matile-ferreroAbstract:Les cochenilles d'Aldabra (Hemiptera, Sternorrhyncha, Coccoidea). A la suite de l'introduction accidentelle de la cochenille Icerya seychellarum observee pour la premiere fois a Aldabra en 1968, l'espece s'est repandue sur tout l'atoll sur de nombreuses plantes. L'atoll etant classe au Patrimoine Mondial de l'Humanite, aucune lutte contre la cochenille n'a pu etre entreprise mais ses effets ont considerablement diminue. Au cours des annees 1970 et 1980, des expeditions britanniques et francaises ont eu lieu pour etudier cette infestation et faire l'inventaire des cochenilles d'Aldabra et des iles du groupe. Nous dressons cette liste en ajoutant aussi les cochenilles mentionnees dans la litterature anterieure.
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Report on two African mealybug species (Hemiptera: Sternorrhyncha: Coccomorpha).
Zootaxa, 2020Co-Authors: Douglas J. Williams, D. Matile-ferreroAbstract:: Most mealybug species in the Afrotropical Region have been described or redescribed adequately and their identities are now well established. The species are listed in the catalogue of world species by Ben-Dov (1994) and in ScaleNet, an online database of the scale insects (Garcia-Morales et al. 2019). The genera found in South Africa, and their type species, were discussed by Millar (2002). However, two species remain that have not been discussed since they were described, and their identities remain obscure. Here we discuss these species.
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The change of depository of a collection of scale insects by Ryoichi Takahashi (Hemiptera: Sternorrhyncha: Coccomorpha).
Zootaxa, 2017Co-Authors: Douglas J. WilliamsAbstract:: Ryoichi Takahashi (1898-1963) was a Japanese entomologist with considerable expertise on the Sternorrhyncha of the Far East and southern Asia. Most of his early articles were in Japanese, the first being published in 1916; but later he also wrote many articles in English. At first he published mainly on aphids (Aphidomorpha) and whiteflies (Aleyrodomorpha). His first article on scale insects did not appear until 1928, describing species from Formosa (Taiwan), where he worked at the Government Agricultural Research Institute. He produced a further 73 articles on scale insects (Garcia et al. 2017). In total, he published almost 420 articles according to Ito and Sorin (1963).
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a new species of dysmicoccus damaging lavender in french provence hemiptera Sternorrhyncha pseudococcidae
Zootaxa, 2015Co-Authors: J F Germain, Daniele Matileferrero, Mehmet Bora Kaydan, Thibaut Malausa, Douglas J. WilliamsAbstract:Une nouvelle espece de Dysmicoccus nuisible a la lavande en Provence (France) (Hemiptera, Sternorrhyncha, Pseudococcidae). Dysmicoccus lavandulae Germain, Matile-Ferrero & Williams n. sp. est decrite et illustree. Ses sequences ADN sont presentees. L’espece vit sur Lavandula x intermedia cultivee pour la production d’essence de lavande en Provence. La liste des especes de pseudococcines vivant sur les lavandes spontanees en France est dressee. Le statut des 2 genres voisins Trionymus Berg et Dysmicoccus Ferris est discute.
Paul Baumann - One of the best experts on this subject based on the ideXlab platform.
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Use of DNA sequences to reconstruct the history of the association between members of the Sternorrhyncha (Homoptera) and their bacterial endosymbionts
European Journal of Entomology, 2020Co-Authors: Nancy A. Moran, Paul Baumann, C. Von DohlenAbstract:The suborder Sternorrhyncba (Insecta: Homoptera) includes aphids, whiteflies, psyllids and scale insects; these are all large diverse groups of herbivorous insects that feed on plant sap and that include many of the most damaging agricultural pests. All of these insects are dependent on obligately intracellular procaryotic symbionts for their survival. In this collaborative project between Nancy Moran and Carol von Dohlen, both insect biologists, and Paul Baumann, a bacteriologist, molecular phylogenetic methods have been used to explore the evolutionary history of these mutualistic interactions. Using PCR amplification with procaryote-specific primers, DNA sequences have been obtained for the 16S ribosomal gene of the endosymbionts from approximately 20 species of Sternorrhyncha, including 13 aphids. On the basis of these sequences as well as published 16S sequences from representative procaryotes, a phylogenetic tree has been constructed, using parsimony methods. Results indicate that the primary endosymbionts of aphids belong to a single distinctive clade that has descended from a single infection of a common ancestor of aphids; this conclusion is based on complete congruence between the phylogenetic tree for the endosymbionts and that for the aphid hosts. Based on fossils that give minimal ages for certain of the aphid lineages, the association is at least 80 million years old. The rate of change of the 16S sequence is roughly constant among lineages within the aphid primary endosymbiont clade. Again using fossil dating, we have estimated absolute rates of substitution, and estimates are consistent for three different aphid clades. These rates have been used to test the hypothesis based on a biogeographic argument that the divergence between the Asian and American members of the Melaphidina dates to the Eocene (approximately 50 MY ago): the molecular data are highly supportive of the hypothesis. The 16S genes of secondary endosymbionts of aphids and of endosymbionts of mealybugs and whiteflies have also been sequenced, and results indicate that, for each insect group, endosymbiotic bacteria are descendants of independent infections by other members of the gamma-subdivision of the Proteobacteria for each insect group.
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biology of bacteriocyte associated endosymbionts of plant sap sucking insects
Annual Review of Microbiology, 2005Co-Authors: Paul BaumannAbstract:AbstractPsyllids, whiteflies, aphids, and mealybugs are members of the suborder Sternorrhyncha and share a common property, namely the utilization of plant sap as their food source. Each of these insect groups has an obligatory association with a different prokaryotic endosymbiont, and the association is the result of a single infection followed by maternal, vertical transmission of the endosymbionts. The result of this association is the domestication of the free-living bacterium to serve the purposes of the host, namely the synthesis of essential amino acids. This domestication is probably in all cases accompanied by a major reduction in genome size. The different properties of the genomes and fragments of the genomes of these endosymbionts suggest that there are different constraints on the permissible evolutionary changes that are probably a function of the gene repertoire of the endosymbiont ancestor and the gene losses that occurred during the reduction of genome size. Pel piacer di porle in lista. ...
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organization of the mitochondrial genomes of whiteflies aphids and psyllids hemiptera Sternorrhyncha
BMC Evolutionary Biology, 2004Co-Authors: Mylo Ly Thao, Linda Baumann, Paul BaumannAbstract:Background With some exceptions, mitochondria within the class Insecta have the same gene content, and generally, a similar gene order allowing the proposal of an ancestral gene order. The principal exceptions are several orders within the Hemipteroid assemblage including the order Thysanoptera, a sister group of the order Hemiptera. Within the Hemiptera, there are available a number of completely sequenced mitochondrial genomes that have a gene order similar to that of the proposed ancestor. None, however, are available from the suborder Sternorryncha that includes whiteflies, psyllids and aphids.
Jon H. Martin - One of the best experts on this subject based on the ideXlab platform.
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the hemiptera Sternorrhyncha insecta of hong kong china an annotated inventory citing voucher specimens and published records
Zootaxa, 2011Co-Authors: Jon H. MartinAbstract:An account of the Sternorrhyncha recorded from Hong Kong, comprising approximately 485 species, is presented. This is primarily based upon voucher holdings in the collection of the Natural History Museum, London and it includes incompletely identified taxa. Also included are records based solely on published data. Host plant data are included where known and there are four appendices for quick cross-reference of names, groups and hosts. One new species in the Aleyrodidae is described, Rhachisphora takahashii sp. nov.. One new synonymy in the Aleyrodidae is proposed, Aleurocanthus cheni Young (1942) becoming a junior synonym of A. spiniferus (Quaintance, 1903) syn. nov.. Two nomenclatural changes in the Psylloidea are proposed: Colophorina hungtouensis Fang & Yang (1986) comb. nov. is transferred from Psylla ; Macrohomotoma sinica Yang & Li (1984) is proposed as a junior synonym of M. gladiatum Kuwayama (1908), syn. nov.. One nomenclatural change in the Diaspididae (Coccoidea) is proposed: Neoparlatoria lithocarpi Takahashi (1934) is removed from synonymy with N. formosana Takahashi (1931), stat. rev.
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The Hemiptera-Sternorrhyncha (Insecta) of Hong Kong, China—an annotated inventory citing voucher specimens and published records
Zootaxa, 2011Co-Authors: Jon H. MartinAbstract:An account of the Sternorrhyncha recorded from Hong Kong, comprising approximately 485 species, is presented. This is primarily based upon voucher holdings in the collection of the Natural History Museum, London and it includes incompletely identified taxa. Also included are records based solely on published data. Host plant data are included where known and there are four appendices for quick cross-reference of names, groups and hosts. One new species in the Aleyrodidae is described, Rhachisphora takahashii sp. nov.. One new synonymy in the Aleyrodidae is proposed, Aleurocanthus cheni Young (1942) becoming a junior synonym of A. spiniferus (Quaintance, 1903) syn. nov.. Two nomenclatural changes in the Psylloidea are proposed: Colophorina hungtouensis Fang & Yang (1986) comb. nov. is transferred from Psylla ; Macrohomotoma sinica Yang & Li (1984) is proposed as a junior synonym of M. gladiatum Kuwayama (1908), syn. nov.. One nomenclatural change in the Diaspididae (Coccoidea) is proposed: Neoparlatoria lithocarpi Takahashi (1934) is removed from synonymy with N. formosana Takahashi (1931), stat. rev.
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Sternorrhyncha jumping plant lice whiteflies aphids and scale insects
Encyclopedia of Insects (Second Edition), 2009Co-Authors: Penny J Gullan, Jon H. MartinAbstract:Publisher Summary This chapter focuses on the Sternorrhyncha, suborder of the order Hemiptera. It comprising some 16,000 described species and contains four major groups, all entirely phytophagous, and usually recognized as superfamilies: the Psylloidea (psylloids or jumping plant-lice); Aleyrodoidea (whitefl ies); Aphidoidea (aphids or aphidoids); and Coccoidea (scale insects or coccoids). Insects belonging to the Hemiptera are unique in having their mouthparts forming a rostrum that comprises mandibles and maxillae modified as needle- or thread-like stylets lying within a grooved labium. Two pairs of stylets interlock to form two canals, one delivering saliva and the other uptaking plant or animal fluid. Sternorrhynchans use their stylets to probe plant tissues intracellularly or intercellularly. The tips of the stylets always enter cells at the site of ingestion, which is often phloem-sieve element. Generally, stylet penetration is accompanied by secretion of solidifying saliva that forms a sheath around the stylets. Other hemipterans mostly probe intracellularly, may or may not secrete salivary sheaths, and ingest from a wider variety of plant or animal tissues. Most Sternorrhynchans are phloem feeders, and thus have a diet rich in carbohydrates and deficient in amino acids and other nitrogenous compounds. Generally, there is an intimate association with intracellular bacteria, called endosymbionts, which are housed in special tissue, bacteriomes or mycetomes, and contribute nutrition to the insect host.
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Whiteflies of Belize (Hemiptera: Aleyrodidae) Part 2— review of the subfamily Aleyrodinae Westwood
Zootaxa, 2005Co-Authors: Jon H. MartinAbstract:A field survey of Sternorrhyncha (Hemiptera) in Belize, principally conducted within the Chiquibul Forest Reserve (CFR), has revealed almost 200 species of whiteflies, all but 40 of them belonging to the subfamily Aleyrodinae. Provided here is an illustrated account of described Belize species of Aleyrodidae-Aleyrodinae. This account proposes three new generic synonymies, three new specific synonymies, nine ten combinations, one revalidated species and provides descriptions of three new genera and 12 new species. Two appendices are provided: a check list, which includes species remaining undescribed, and the associated host-plant genera or families (when known) of all putative species; and a summary of taxonomic changes proposed here. Line drawings and/or photographs of slide-mounted puparia are provided for all described species, and photographs alone are provided for a few of the more distinctive species that remain undescribed.
Jacek Szwedo - One of the best experts on this subject based on the ideXlab platform.
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A new whitefly from Lower Cretaceous Lebanese amber (Hemiptera: Sternorrhyncha: Aleyrodidae)
Insect Systematics & Evolution, 2020Co-Authors: Jowita Drohojowska, Jacek SzwedoAbstract:Baetylus kahramanus gen. et sp.n. from Lower Cretaceous Lebanese amber is described, based on an adult male specimen. It is the second representative of subfamily Aleyrodinae (Hemiptera: Sternorrhyncha: Aleyrodidae) and the third aleyrodid from this fossil resin. Morphological features of the new genus and species are discussed as well as evolutionary and biogeographic importance of this fossil.
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Early Cretaceous Aleyrodidae (Hemiptera: Sternorrhyncha) from the Lebanese amber
Cretaceous Research, 2020Co-Authors: Jowita Drohojowska, Jacek SzwedoAbstract:Abstract Four new, monotypic genera of Aleyrodidae from the Lower Cretaceous Lebanese amber are described: Shapashe aithiopa gen. sp. nov.; Milqartis azari gen. sp. nov.; Aretsaya therina gen. sp. nov.; and Yamis libanotos gen. sp. nov. All new taxa represent subfamily Aleurodicinae. The key for identification of genera of Aleurodicinae from the Lebanese amber is provided. The morphological features of newly established taxa are discussed. The importance of the fossils for phylogenetic, evolutionary and ecological studies is presented.
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fossils reshape the Sternorrhyncha evolutionary tree insecta hemiptera
Scientific Reports, 2020Co-Authors: Jowita Drohojowska, Jacek Szwedo, Dagmara żyla, Di Ying Huang, Patrick MullerAbstract:The Sternorrhyncha, which comprise about 18,700 described recent species, is a suborder of the Hemiptera, one of big five most diverse insect orders. In the modern fauna, these tiny phytophages comprise insects of great ecological and economic importance, like aphids (Aphidomorpha), scale insects (Coccidomorpha), whiteflies (Aleyrodomorpha) and psyllids (Psylloidea). Their evolutionary history can be traced back to the Late Carboniferous, but the early stages of their evolution and diversification is poorly understood, with two known extinct groups-Pincombeomorpha and Naibiomorpha variously placed in classifications and relationships hypotheses. Most of the recent Sternorrhyncha groups radiated rapidly during the Cretaceous. Here we report the new finding of very specialised Sternorrhynchans found as inclusions in mid-Cretaceous amber from Kachin state (northern Myanmar), which represent another extinct lineage within this hemipteran suborder. These fossils, proposed to be placed in a new infraorder, are revealed to be related to whiteflies and psyllids. We present, also for the first time, the results of phylogenetic analyses covering extinct and extant lineages of the Sternorrhyncha.
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a bizarre Sternorrhynchan wing from the lower jurassic of luxembourg hemiptera Sternorrhyncha pincombeomorpha
Historical Biology, 2019Co-Authors: Jacek Szwedo, Robert WeisAbstract:AbstractFossil wing of Hemiptera Sternorrhyncha with peculiar venation is described from the lower Toarcian (Lower Jurassic) of Bascharage (Grand-duchy of Luxembourg). It represents new family Xulsigiidae fam. nov., comprising a new genus and species Xulsigia karetsa gen. et sp. nov. It is placed preliminarily in extinct infraorder Pincombeomorpha for the presence of three branches of median vein. Key to families of Pincombeomorpha is given and the taxonomic position and venation features of the new fossil are discussed.Family Xulsigiidae is registered in Zoobank under the http://www.zoobank.org/urn:lsid:zoobank.org:act:3A57B428-638A-439A-AEC4-D18B5959B5CA Genus Xulsigia is registered in Zoobank under the http://www.zoobank.org/urn:lsid:zoobank.org:act:2B255A30-5A7C-4CF8-AE77-18ED6E8E03C2
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Gapenus rhinariatus gen. sp. n., a new whitefly from Lebanese amber (Hemiptera: Sternorrhyncha: Aleyrodidae)
Insect Evolution in an Amberiferous and Stone Alphabet, 2013Co-Authors: Jowita Drohojowska, Jacek SzwedoAbstract:This chapter describes Gapenus rhinariatus gen. et sp. n. from the Lower Cretaceous Lebanese amber, based on an adult male specimen. Gapenus rhinariatus gen. et sp. n. is the second representative of subfamily Aleurodicinae (Hemiptera: Sternorrhyncha: Aleyrodidae) in the fossil record and the oldest representative of this subfamily known so far. The description of findings of fossil species with particular structure of the antennae as Gapenus rhinarius gen. sp. n., gives the new insight into the evolutionary processes of the Aleyrodidae. The chapter also briefly discusses the morphological features of this fossil. The newly established genus Gapenus gen. n. is placed in Aleurodicinae based on the characters as stem Sc+R forked, with branch R1 preserved and structure of the antennal segments with numerous rhinaria. This extinct genus Gapenus gen. n. sheds new light on morphological disparity and taxonomic diversity of Aleyrodidae from the Lower Cretaceous Lebanese amber forest Keywords:Aleurodicinae; Aleyrodidae; fossil; Gapenus rhinariatus gen. sp. n.; Lebanese amber; Lower Cretaceous
Jowita Drohojowska - One of the best experts on this subject based on the ideXlab platform.
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A new whitefly from Lower Cretaceous Lebanese amber (Hemiptera: Sternorrhyncha: Aleyrodidae)
Insect Systematics & Evolution, 2020Co-Authors: Jowita Drohojowska, Jacek SzwedoAbstract:Baetylus kahramanus gen. et sp.n. from Lower Cretaceous Lebanese amber is described, based on an adult male specimen. It is the second representative of subfamily Aleyrodinae (Hemiptera: Sternorrhyncha: Aleyrodidae) and the third aleyrodid from this fossil resin. Morphological features of the new genus and species are discussed as well as evolutionary and biogeographic importance of this fossil.
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Early Cretaceous Aleyrodidae (Hemiptera: Sternorrhyncha) from the Lebanese amber
Cretaceous Research, 2020Co-Authors: Jowita Drohojowska, Jacek SzwedoAbstract:Abstract Four new, monotypic genera of Aleyrodidae from the Lower Cretaceous Lebanese amber are described: Shapashe aithiopa gen. sp. nov.; Milqartis azari gen. sp. nov.; Aretsaya therina gen. sp. nov.; and Yamis libanotos gen. sp. nov. All new taxa represent subfamily Aleurodicinae. The key for identification of genera of Aleurodicinae from the Lebanese amber is provided. The morphological features of newly established taxa are discussed. The importance of the fossils for phylogenetic, evolutionary and ecological studies is presented.
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fossils reshape the Sternorrhyncha evolutionary tree insecta hemiptera
Scientific Reports, 2020Co-Authors: Jowita Drohojowska, Jacek Szwedo, Dagmara żyla, Di Ying Huang, Patrick MullerAbstract:The Sternorrhyncha, which comprise about 18,700 described recent species, is a suborder of the Hemiptera, one of big five most diverse insect orders. In the modern fauna, these tiny phytophages comprise insects of great ecological and economic importance, like aphids (Aphidomorpha), scale insects (Coccidomorpha), whiteflies (Aleyrodomorpha) and psyllids (Psylloidea). Their evolutionary history can be traced back to the Late Carboniferous, but the early stages of their evolution and diversification is poorly understood, with two known extinct groups-Pincombeomorpha and Naibiomorpha variously placed in classifications and relationships hypotheses. Most of the recent Sternorrhyncha groups radiated rapidly during the Cretaceous. Here we report the new finding of very specialised Sternorrhynchans found as inclusions in mid-Cretaceous amber from Kachin state (northern Myanmar), which represent another extinct lineage within this hemipteran suborder. These fossils, proposed to be placed in a new infraorder, are revealed to be related to whiteflies and psyllids. We present, also for the first time, the results of phylogenetic analyses covering extinct and extant lineages of the Sternorrhyncha.
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First Psylloidea (Hemiptera: Sternorrhyncha) in Miocene Mexican amber
Paläontologische Zeitschrift, 2016Co-Authors: Jowita Drohojowska, Piotr Węgierek, Mónica M. Solórzano KraemerAbstract:The first psyllid, Tuthillia danielburckhardti sp. nov. from early Middle Miocene Mexican amber is described and illustrated. Es wird der erste Blattfloh, Tuthillia danielburckhardti sp. nov., aus dem Mexikanischen Bernstein (frühes Mittel-Miozän) beschrieben und abgebildet.
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First Psylloidea (Hemiptera: Sternorrhyncha) in Miocene Mexican amber
Palaeontologische Zeitschrift, 2016Co-Authors: Jowita Drohojowska, Piotr Wegierek, Mónica M. Solórzano KraemerAbstract:The first psyllid, Tuthillia danielburckhardti sp. nov. from early Middle Miocene Mexican amber is described and illustrated.
