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Nils Møller Andersen - One of the best experts on this subject based on the ideXlab platform.
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mesoveliidae hebridae and hydrometridae of australia hemiptera heteroptera gerromorpha with a reanalysis of the phylogeny of semiaquatic bugs
Invertebrate Systematics, 2004Co-Authors: Nils Møller Andersen, Tom A WeirAbstract:The semiaquatic bugs (Hemiptera : Heteroptera, infraorder Gerromorpha), comprising water striders and their allies, are familiar inhabitants of water surfaces in all continents. Currently, the world fauna has more than 1900 described species classified in eight families and 165 genera. A phylogenetic analysis using maximum parsimony was performed on a dataset comprising 56 morphological characters scored for 24 exemplar genera covering all families and subfamilies of Gerromorpha. The phylogenetic relationships found concur with those presented by Andersen (1982) except that the relationships between some subfamilies of Veliidae and Gerridae are unresolved. The Australian fauna of Gerromorpha comprises six families, 30 genera, and 123 species. One-third of the genera and more than 80% of the species are endemic to Australia. Previously, we have covered all Australian species of the families Gerridae, Hermatobatidae and Veliidae. The present paper deals with the families Hebridae, Hydrometridae, and Mesoveliidae. We offer redescriptions or descriptive notes on all previously described species, describe Mesovelia ebbenielseni, sp. nov. (Mesoveliidae), Austrohebrus apterus, gen. et sp. nov., and Hebrus pilosus, sp. nov. (Hebridae), and synonymise Hebrus woodwardi Lansbury, syn. nov. (Hebridae) and Hydrometra halei Hungerford and Evans, syn. nov. (Hydrometridae). We present keys for the identification of genera and species, and map the distribution of all species. We also give a key for the identification of the families of Gerromorpha known from Australia.
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Fossil water striders in the Oligocene/Miocene Dominican amber (Hemiptera: Gerromorpha)
Insect Systematics & Evolution, 2000Co-Authors: Nils Møller AndersenAbstract:Most water striders and other semiaquatic bugs (Hemiptera, Gerromorpha) live on the surface film of freshwater. Adults are often flightless and are therefore not prone to be caught in resin exuded by trees on land and subsequently preserved as amber inclusions. Nevertheless, a small number of gerromorphan bugs have so far been reported from amber. The present paper reports on six species of Gerromorpha in the Oligocene/Miocene Dominican amber, describing Brachymetroides atra gen. et sp. n. (Gerridae: Charmatometrinae), Microvelia grimaldii sp.n. and M. electra sp.n. (Veliidae: Microveliinae) and redescribing Electrobates spinipes Andersen & Poinar (Gerridae: Electrobatinae), Microvelia polhemi Andersen (Veliidae: Microveliinae), and Halovelia electrodominica Andersen & Poinar (Veliidae: Haloveliinae). Finally, the phylogenetic, palaeobiological, and biogeographic significance of these amber fossils are discussed.
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Australian water striders of the subfamilies Trepobatinae and Rhagadotarsinae (Hemiptera : Gerridae)
Invertebrate Systematics, 1998Co-Authors: Nils Møller Andersen, Tom A WeirAbstract:The Australian fauna of water striders (Hemiptera, Gerridae) is quite diverse,comprising 12 genera and 36 species representing four of the eight extantsubfamilies currently classified in the family Gerridae. Water striders arecommon inhabitants of the surface film of both freshwater and marine habitats.The present work deals with water striders belonging to the subfamiliesTrepobatinae and Rhagadotarsinae, redescribing the seven species previouslyknown from Australia: Rheumatometra philarete Kirkaldy,Calyptobates jourama Polhemus & Polhemus,C. rubidus Polhemus & Polhemus,C. minimus Polhemus & Polhemus,Stenobates australicus Polhemus & Polhemus,Rheumatometroides carpentaria (Polhemus & Polhemus),Rhagadotarsus anomalus Polhemus & Karunaratne, anddescribing Rheumatometra dimorpha, sp. nov. fromQueensland, New South Wales and Victoria. Keys to subfamilies of Gerridaerepresented in Australia and keys to genera and species of AustralianTrepobatinae and Rhagadotarsinae are provided and the distributions of allspecies are mapped.
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A phylogenetic analysis of the evolution of sexual dimorphism and mating systems in water striders (Hemiptera: Gerridae)
Biological Journal of the Linnean Society, 1997Co-Authors: Nils Møller AndersenAbstract:Abstract Conflicts over mating decisions characterize the sexual behaviour of many insects,in particular when males encounter females that already carry enough sperm to fertilize their eggs, since a mating often will inflict greater costs than benefits upon females. Therefore, coevolutionary models predict adaptation and counter-adaptation by the sexes in a battle to control the outcome of sexual encounters. A phylogenetic analysis was performed on patterns of sexual dimorphism and mating systems within water striders (Hemiptera, Gerridae). Phylogenetic effects or «constraints» have significantly shaped patterns of sexual dimorphism in female/male size ratios, legs and genitalia of males, and the structure of the female abdomen. Males of ancestral gerrids were probably slightly smaller than conspecific females, had powerful fore legs adapted to grasp the female's thorax during mating, and had clasping genitalic structures suited to grasp or pinch the female posteriorly. Most gerrids have a female/male size ratio between 1.05 and 1.14, but more pronounced sexual size ratios (above 1.25) have independently evolved several times in the family, usually in association with extended post-copulatory mate guarding. The comparative, phylogenetic analysis suggests coevolution of female anticlasper and male clasping devices for the clade comprising the subfamilies Cylindrostethinae, Ptilomerinae, and Halobatinae while female anticlasper devices have evolved in the absence of male clasping genitalia in the Gerrinae. The ancestral and most common mating system in gerrids is «scramble competition polygyny» from which has evolved «resource defence polygyny» at least four times independently of each other. The phylogenetic effects on patterns of mating behaviour are much less obvious, as exemplified by the large amount of interspecific variation in some genera.
Herbert Zettel - One of the best experts on this subject based on the ideXlab platform.
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New water strider species of Eurymetra from Madagascar (Hemiptera: Heteroptera: Gerridae)
Acta Entomologica Musei Nationalis Pragae, 2020Co-Authors: Herbert ZettelAbstract:The Madagascan material of the halobatine genus Eurymetra Esaki, 1926 (Hemiptera: Heteroptera: Gerridae: Halobatinae), which is deposited at the Natural History Museum Vienna, is revised. A close examination of “Eurymetra madagascariensis Poisson, 1945” revealed two new species, Eurymetra santamariae sp. nov. and Eurymetra papaceki sp. nov. A definition of the newly established Eurymetra madagascariensis species group is provided as well as keys to the freshwater halobatine genera and to Eurymetra species known from Madagascar.
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Checklist of the aquatic Hemiptera (Heteroptera: Gerromorpha and Nepomorpha) of Cambodia, with descriptions of new species of Microvelia Westwood, 1834 and Ranatra Fabricius, 1790
Aquatic Insects, 2017Co-Authors: Herbert Zettel, Sophany Phauk, Sokha Kheam, Hendrik FreitagAbstract:ABSTRACTBased on specimens (Natural History Museum Vienna, Cambodian Entomology Initiatives at the Royal University of Phnom Penh, private collection of fourth author) and based on literature, we provide a first species list of aquatic Hemiptera (Gerromorpha and Nepomorpha) of Cambodia. We studied 38 species (37 identified) and added three reliable species records from the literature. In total, we report on 41 species in 25 genera and 11 families (Belostomatidae, Gerridae, Hebridae, Helotrephidae, Hydrometridae, Mesoveliidae, Micronectidae, Naucoridae, Nepidae, Notonectidae, Veliidae). Most of these taxa are recorded from Cambodia for the first time. We describe two species as new to science: Microvelia falcata sp. n. (Veliidae) and Ranatra cardamomensis sp. n. (Nepidae). Subspecific rank is given for Cylindrostethus costalis malayensis Polhemus, 1994 stat. n. (Gerridae) that was formerly described as a distinct species.http://zoobank.org/urn:lsid:zoobank.org:pub:C95441BD-C817-42BA-87CA-01070A4B7F17
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Two new species of Pleciobates (Hemiptera: Gerromorpha: Gerridae) from India, with a key to the species of Pleciobates
Zootaxa, 2014Co-Authors: E. Eyarin Jehamalar, Herbert Zettel, Susmita Gupta, Kailash Chandra, Srimoyee Basu, Bijita Barman, K. A. SubramanianAbstract:Two new species of water striders in the genus Pleciobates are described from India and compared with allied species. Pleciobates bengalensis Jehamalar, Basu & Zettel sp. nov. is described from the Jalpaiguri District, West Bengal and Pleciobates expositus Jehamalar, Chandra & Zettel sp. nov. (Hemiptera: Gerridae) is described from the Dhubri District, Assam. A key to the species of Pleciobates and a distribution map of the species of Pleciobates from India are provided. For the first time the genitalia of Pleciobates females are described in detail.
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Molecular phylogeny of the pond skaters (Gerrinae), discussion of the fossil record and a checklist of species assigned to the subfamily (Hemiptera: Heteroptera: Gerridae)
Insect Systematics & Evolution, 2014Co-Authors: Jakob Damgaard, Felipe Ferraz Figueiredo Moreira, Tom A Weir, Herbert ZettelAbstract:The phylogenetic relationships among selected species and genera of Gerrinae (Heteroptera: Gerridae) were investigated in a parsimony analysis of 2268 bp of DNA sequence data from the genes encoding COI + II, 16S rRNA and 28S rRNA. The taxa represented 12 of 15 recognized genera of Gerrinae and with outgroup taxa from all other subfamilies of Gerridae, including three of five recognized genera of Eotrechinae, which is considered the sister-group of Gerrinae. The resulting phylogeny shows that Gerrinae is not monophyletic, since a clade comprising Gerris, Aquarius, Limnoporus, Tachygerris, Eurygerris and Gigantometra is more closely related to representatives of the subfamily Eotrechinae than to a clade comprising Limnogonus, Neogerris, Limnometra, Tenagogerris and Tenagogonus. The two currently recognized gerrine tribes, Tachygerrini and Gerrini, were also paraphyletic, since Eurygerris was sister-group to Gigantometra, while Tachygerris was sister-group to Limnoporus + Aquarius + Gerris. Limnogonus and Neogerris were found to be strongly supported sister-taxa, and their sister-group was a clade comprising Limnometra, Tenagogerris and Tenagogonus, none of which were monophyletic. Finally, Aquarius chilensis (Berg, 1881) was sister-group to a clade comprising Aquarius amplus (Drake & Harris, 1938), A. remigis (Say, 1832) and A. remigoides (Gallant & Fairbairn, 1993), recognized as the A. remigis species group, and the entire clade was sister-group to Gerris. Based on the phylogenetic reconstruction, we outline possible diagnostic character combinations for a future revision of the Gerrinae and discuss the fossil record. While some of the relationships reinstate earlier ideas, e.g., Limnogonus and Neogerris being sister groups, many others are poorly supported and poorly diagnosed, and therefore, we retain from drawing taxonomic conclusions until data is available from the remaining genera, which can support a future generic revision of the Gerrinae. The updated checklist of species assigned to the subfamily is therefore based on the established taxonomy.
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A comparison of the external morphology and functions of labial tip sensilla
European Journal of Endocrinology, 2014Co-Authors: Jolanta Brozek, Herbert ZettelAbstract:The present study provides new data on the morphology and distribution of the labial tip sensilla of 41 species of 20 gerromorphan (sub)families (Heteroptera: Gerromorpha) obtained using a scanning electron microscope. There are eleven morphologically distinct types of sensilla on the tip of the labium: four types of basiconic uniporous sensilla, two types of plate sensilla, one type of peg uniporous sensilla, peg-in-pit sensilla, dome-shaped sensilla, placoid multiporous sensilla and elongated placoid multiporous sub-apical sensilla. Based on their external structure, it is likely that these sensilla are thermo-hygrosensitive, chemosensitive and mechano-chemosensitive. There are three different designs of sensilla in the Gerromorpha: the basic design occurs in Mesoveliidae and Hebridae; the intermediate one is typical of Hydrometridae and Hermatobatidae, and the most specialized design in Macroveliidae, Veliidae and Gerridae. No new synapomorphies for Gerromorpha were identified in terms of the labial tip sensilla, multi-peg structures and shape of the labial tip, but eleven new diagnostic characters are recorded for clades currently recognized in this infraorder. One synapomorphy is recorded for Hydrometridae + Hermatobatidae + Macroveliidae + Veliidae + Gerridae; five for Macroveliidae + Veliidae + Gerridae; one for Veliidae + Gerridae; and one for Gerridae alone. Within Gerridae, one possible autapomorphy is recorded for Trepobatinae, and two possible autapomorphies for Rhagadotarsinae. We also record a possible autapomorphy for Cylindrostethinae, which indicates that this taxon is monophyletic, as is indicated by other morphological characters. Finally, we record one putative diagnostic character for Macroveliidae + Veliidae, two families that are otherwise not considered sister groups. This new set of characters based on features of the mouthparts of gerromorphan bugs might provide new insights into the cladogenesis of the infraorder.
N. Moller Andersen - One of the best experts on this subject based on the ideXlab platform.
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Ecological phylogenetics of mating systems and sexual dimorphism in water striders (Heteroptera: Gerridae)
1996Co-Authors: N. Moller AndersenAbstract:Les Heteropteres de la famille des Gerridae sont manifestement bien adaptes a la vie a la surface de l'eau, particulierement en ce qui concerne la locomotion, la nutrition et la reproduction. Le dimorphisme sexuel est generalement prononce. Un dimorphisme de taille qui favorise la femelle et une relation allometrique significative entre le dimorphisme sexuel de taille et la taille totale concernant des especes de Gerris des eaux temperees sont bien connus et sont etendus ici aux autres especes de la sous-famille des Gerrinae. Les Gerris montrent aussi un dimorphisme portant sur les caracteres sexuels primaires et secondaires, particulierement en ce qui concerne la forme et la taille des pattes anterieures, la structure des derniers segments abdominaux et les genitalia. Une approche par la phylogenie ecologique, permettant d'etudier les modalites du dimorphisme sexuel et les systemes d'accouplement dans la sous-famille des Gerrinae, qui est monophyletique, cerne l'evolution du dimorphisme sexuel lie aux systemes d'accouplement et la coevolution des dispositifs d'appariement chez le mâle et de rejet chez la femelle. Il n'existe ni fardeau ni contraintes d'ordre phylogenetique sur le dimorphisme sexuel dans ce groupe, mais la phylogenie a joue un certain role sur la distribution des rapports de taille F/M, les dispositifs d'accrochage des mâles et de refus chez les femelles a l'interieur des clades. Il n'y a pas lieu de supposer que les genitalia mâles et femelles ou les autres structures interviennent dans une «course a l'armement» coevolutive. Enfin, l'influence phylogenetique sur les modalites du comportement sexuel sont negligeables comme le montrent l'importance de la variation interspecifique chez certains genres ainsi que le fait que les mâles d'une meme espece puissent deployer des tactiques alternatives d'accouplement dependant des conditions ecologiques.
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The evolution of wing polymorphism in water striders (Gerridae): a phylogenetic approach
Oikos, 1993Co-Authors: N. Moller AndersenAbstract:Water striders (Gerridae) exhibit wing length polymorphism that affects their flight ability. Gerrid populations may be either long-winged, wing dimorphic (permanent or seasonal), or short-winged. In bivoltine species, the wing morphism of the overwintering (diapause) generation may differ from that of the summer (non-diapause) generation. Patterns of dispersal polymorphism, beside having adaptive value in an ecological context, also have unique evolutionary histories. Were, patterns of wing polymorphism in temperate gerrid species belonging to the genera Aquarius, Gerris, and Limnoporus are superimposed upon reconstructed phylogenies (cladograms) for these genera. For each of three characters describing wing morphism states, the most parsimonious sequence of changes was determined by character optimization
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Phylogeny and classification of an extinct water strider genus (Hemiptera, Gerridae) from Dominican amber, with evidence of mate guarding in a fossil insect
Journal of Zoological Systematics and Evolutionary Research, 1992Co-Authors: N. Moller Andersen, G. O. PoinarAbstract:Electrobates spinipes gen. n., sp. n. (Hemiptera, Gerridae) is described from Dominican amber (upper Oligocene). The male and female type specimens are extremely well-preserved and reveal almost all characters required for placing the fossil species in the classification of extant Gerridae. The phylogenetic relationship of Electrobates gen. n. is analyzed and discussed. It is classified as belonging to a lineage (clade) of Gerridae which is now extinct. A new subfamily, Electrobatinae subfam. n., is erected for the fossil genus. Finally, the finding of a male and female enclosed in the same piece of amber is taken as evidence of postcopulatory mate guarding in a fossil gerrid. The present paper documents that phylogenetic reconstruction can be coupled with information from the fossil record to increase understanding of evolutionary history. Zusammenfassung Electrobates spinipes gen. n., sp. n. (Hemiptera, Gerridae), aus dominikanischem Bernstein (oberes Oligozan) wird beschrieben. Das mannliche und weibliche Typusexemplar sind extrem gut erhalten und weisen fast alle Merkmale auf, die fur eine Zuordnung zur rezenten Familie Gerridae erforderlich sind. Die phylogenetische Verwandtschaft von Electrobates gen.n. wurde analysiert und diskutiert. Die Gattung wird hiernach einer selbstandigen, ausgestorbenen Entwicklungslinie (clade) der Gerridae zugeordnet, fur die eine neue Unterfamilie, Electrobatinae subfam. n., errichtet wurde. Schlieslich wird das Auffinden eines Mannchens und Weibchens im gleichen Stuck Bernstein als Nachweis fur eine postkopulatorische Partnerbewachung (mate guarding) in einem fossilen Gerriden aufgefast. Diese Arbeit dokumentiert, das die Koppelung von phylogenetischer Rekonstruktion mit Informationen aus fossilen Funden zu einem besseren Verstandnis der Stammesgeschichte fuhren kann.
Tom A Weir - One of the best experts on this subject based on the ideXlab platform.
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Molecular phylogeny of the pond skaters (Gerrinae), discussion of the fossil record and a checklist of species assigned to the subfamily (Hemiptera: Heteroptera: Gerridae)
Insect Systematics & Evolution, 2014Co-Authors: Jakob Damgaard, Felipe Ferraz Figueiredo Moreira, Tom A Weir, Herbert ZettelAbstract:The phylogenetic relationships among selected species and genera of Gerrinae (Heteroptera: Gerridae) were investigated in a parsimony analysis of 2268 bp of DNA sequence data from the genes encoding COI + II, 16S rRNA and 28S rRNA. The taxa represented 12 of 15 recognized genera of Gerrinae and with outgroup taxa from all other subfamilies of Gerridae, including three of five recognized genera of Eotrechinae, which is considered the sister-group of Gerrinae. The resulting phylogeny shows that Gerrinae is not monophyletic, since a clade comprising Gerris, Aquarius, Limnoporus, Tachygerris, Eurygerris and Gigantometra is more closely related to representatives of the subfamily Eotrechinae than to a clade comprising Limnogonus, Neogerris, Limnometra, Tenagogerris and Tenagogonus. The two currently recognized gerrine tribes, Tachygerrini and Gerrini, were also paraphyletic, since Eurygerris was sister-group to Gigantometra, while Tachygerris was sister-group to Limnoporus + Aquarius + Gerris. Limnogonus and Neogerris were found to be strongly supported sister-taxa, and their sister-group was a clade comprising Limnometra, Tenagogerris and Tenagogonus, none of which were monophyletic. Finally, Aquarius chilensis (Berg, 1881) was sister-group to a clade comprising Aquarius amplus (Drake & Harris, 1938), A. remigis (Say, 1832) and A. remigoides (Gallant & Fairbairn, 1993), recognized as the A. remigis species group, and the entire clade was sister-group to Gerris. Based on the phylogenetic reconstruction, we outline possible diagnostic character combinations for a future revision of the Gerrinae and discuss the fossil record. While some of the relationships reinstate earlier ideas, e.g., Limnogonus and Neogerris being sister groups, many others are poorly supported and poorly diagnosed, and therefore, we retain from drawing taxonomic conclusions until data is available from the remaining genera, which can support a future generic revision of the Gerrinae. The updated checklist of species assigned to the subfamily is therefore based on the established taxonomy.
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mesoveliidae hebridae and hydrometridae of australia hemiptera heteroptera gerromorpha with a reanalysis of the phylogeny of semiaquatic bugs
Invertebrate Systematics, 2004Co-Authors: Nils Møller Andersen, Tom A WeirAbstract:The semiaquatic bugs (Hemiptera : Heteroptera, infraorder Gerromorpha), comprising water striders and their allies, are familiar inhabitants of water surfaces in all continents. Currently, the world fauna has more than 1900 described species classified in eight families and 165 genera. A phylogenetic analysis using maximum parsimony was performed on a dataset comprising 56 morphological characters scored for 24 exemplar genera covering all families and subfamilies of Gerromorpha. The phylogenetic relationships found concur with those presented by Andersen (1982) except that the relationships between some subfamilies of Veliidae and Gerridae are unresolved. The Australian fauna of Gerromorpha comprises six families, 30 genera, and 123 species. One-third of the genera and more than 80% of the species are endemic to Australia. Previously, we have covered all Australian species of the families Gerridae, Hermatobatidae and Veliidae. The present paper deals with the families Hebridae, Hydrometridae, and Mesoveliidae. We offer redescriptions or descriptive notes on all previously described species, describe Mesovelia ebbenielseni, sp. nov. (Mesoveliidae), Austrohebrus apterus, gen. et sp. nov., and Hebrus pilosus, sp. nov. (Hebridae), and synonymise Hebrus woodwardi Lansbury, syn. nov. (Hebridae) and Hydrometra halei Hungerford and Evans, syn. nov. (Hydrometridae). We present keys for the identification of genera and species, and map the distribution of all species. We also give a key for the identification of the families of Gerromorpha known from Australia.
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Australian water striders of the subfamilies Trepobatinae and Rhagadotarsinae (Hemiptera : Gerridae)
Invertebrate Systematics, 1998Co-Authors: Nils Møller Andersen, Tom A WeirAbstract:The Australian fauna of water striders (Hemiptera, Gerridae) is quite diverse,comprising 12 genera and 36 species representing four of the eight extantsubfamilies currently classified in the family Gerridae. Water striders arecommon inhabitants of the surface film of both freshwater and marine habitats.The present work deals with water striders belonging to the subfamiliesTrepobatinae and Rhagadotarsinae, redescribing the seven species previouslyknown from Australia: Rheumatometra philarete Kirkaldy,Calyptobates jourama Polhemus & Polhemus,C. rubidus Polhemus & Polhemus,C. minimus Polhemus & Polhemus,Stenobates australicus Polhemus & Polhemus,Rheumatometroides carpentaria (Polhemus & Polhemus),Rhagadotarsus anomalus Polhemus & Karunaratne, anddescribing Rheumatometra dimorpha, sp. nov. fromQueensland, New South Wales and Victoria. Keys to subfamilies of Gerridaerepresented in Australia and keys to genera and species of AustralianTrepobatinae and Rhagadotarsinae are provided and the distributions of allspecies are mapped.
Felipe Ferraz Figueiredo Moreira - One of the best experts on this subject based on the ideXlab platform.
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Revision of the genus Platygerris White, 1883 (Hemiptera: Heteroptera: Gerridae), with descriptions of two new species from Colombia
Insect Systematics & Evolution, 2020Co-Authors: Carla Fernanda Burguez Floriano, Felipe Ferraz Figueiredo Moreira, Irina Morales, Fredy Molano-rendón, Pitágoras Da Conceição BispoAbstract:Platygerris White comprises true bugs that inhabit the surface of water in moderate to fast-flowing freshwater habitats. This genus differs from Cylindrostethus Mayr and Potamobates Champion (Gerridae: Cylindrostethinae) by having a short and flattened body; the mandibular and maxillary plates fused; and the omphalium, lateral groove, and lateral evaporatorium of the scent apparatus inconspicuous. In this paper, we redescribe Platygerris, describe two new species from Colombia, and redescribe P. asymmetricus Hungerford, P. caeruleus Champion and P. depressus White. In addition, we present an updated identification key to the species of the genus. For the first time, the cuticular structure is described for the genus based on electron microscopy.
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The water striders (Hemiptera: Heteroptera: Gerridae) of Costa Rica: new species, checklist, and new records.
Zootaxa, 2018Co-Authors: Bernald Pacheco-chaves, Felipe Ferraz Figueiredo Moreira, Isabelle Da Rocha Silva Cordeiro, Monika SpringerAbstract:Brachymetra bernaldi Cordeiro, sp. nov. (Hemiptera: Heteroptera: Gerridae) from Heredia, Costa Rica, is herein described, illustrated, and compared with congeners. The new species resembles B. albinervus (Amyot Serville, 1843), but can be separated from it by the weak median carina of the pronotum, male abdominal mediotergite I with weak lateral notches, male abdominal mediotergite VII quadrate, male abdominal segment VIII in natural position almost entirely inserted into the abdominal cavity, and paramere narrow, with acute apex. We also provide the first checklist of the Gerridae of Costa Rica and new records, based on collection material and field sampling. All totaled, 31 species representing 13 genera and six subfamilies are recorded from the country. Five species and the genera Brachymetra Mayr, 1865 and Neogerris Matsumura, 1913 are registered for the first time from Costa Rica, and new provincial records are presented for 15 other species.
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A new species of Rhagovelia Mayr, 1865 (Hemiptera: Heteroptera: Veliidae) from French Guiana, with new records of Gerromorpha from the country.
Zootaxa, 2018Co-Authors: Flávia Souza Da Motta, Felipe Ferraz Figueiredo Moreira, Antonin Jean Johan Crumière, Maria Emilia Santos, Abderrahman KhilaAbstract:Rhagovelia apuruaque sp. nov. (Hemiptera: Heteroptera: Veliidae), from the commune of Regina, French Guiana, is described, illustrated, and compared with species of the salina group. Brachymetra albinervus (Amyot Serville, 1843), B. lata Shaw, 1933, Limnogonus ignotus Drake Harris, 1934, Neogerris lubricus (White, 1879), Rheumatobates crassifemur esakii Schroeder, 1931 (Gerridae), Mesovelia mulsanti White, 1879 (Mesoveliidae), Microvelia longipes Uhler, 1894, M. mimula White, 1879, M. pulchella Westwood, 1834, R. humboldti Polhemus, 1997, and S. transversa (Hungerford, 1929) (Veliidae) are recorded for the first time from French Guiana. The presence of Tachygerris adamsoni (Drake, 1942) (Gerridae) in the country is confirmed. New records are presented for the following species previously reported from the study area: B. shawi Hungerford Matsuda, 1957, Cylindrostethus palmaris Drake Harris, 1934, L. hyalinus (Fabricius, 1803) (Gerridae), Husseyella turmalis (Drake Harris, 1933), Paravelia bullialata Polhemus Polhemus, 1984, and Stridulivelia strigosa (Hungerford, 1929) (Veliidae).
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Molecular phylogeny of the pond skaters (Gerrinae), discussion of the fossil record and a checklist of species assigned to the subfamily (Hemiptera: Heteroptera: Gerridae)
Insect Systematics & Evolution, 2014Co-Authors: Jakob Damgaard, Felipe Ferraz Figueiredo Moreira, Tom A Weir, Herbert ZettelAbstract:The phylogenetic relationships among selected species and genera of Gerrinae (Heteroptera: Gerridae) were investigated in a parsimony analysis of 2268 bp of DNA sequence data from the genes encoding COI + II, 16S rRNA and 28S rRNA. The taxa represented 12 of 15 recognized genera of Gerrinae and with outgroup taxa from all other subfamilies of Gerridae, including three of five recognized genera of Eotrechinae, which is considered the sister-group of Gerrinae. The resulting phylogeny shows that Gerrinae is not monophyletic, since a clade comprising Gerris, Aquarius, Limnoporus, Tachygerris, Eurygerris and Gigantometra is more closely related to representatives of the subfamily Eotrechinae than to a clade comprising Limnogonus, Neogerris, Limnometra, Tenagogerris and Tenagogonus. The two currently recognized gerrine tribes, Tachygerrini and Gerrini, were also paraphyletic, since Eurygerris was sister-group to Gigantometra, while Tachygerris was sister-group to Limnoporus + Aquarius + Gerris. Limnogonus and Neogerris were found to be strongly supported sister-taxa, and their sister-group was a clade comprising Limnometra, Tenagogerris and Tenagogonus, none of which were monophyletic. Finally, Aquarius chilensis (Berg, 1881) was sister-group to a clade comprising Aquarius amplus (Drake & Harris, 1938), A. remigis (Say, 1832) and A. remigoides (Gallant & Fairbairn, 1993), recognized as the A. remigis species group, and the entire clade was sister-group to Gerris. Based on the phylogenetic reconstruction, we outline possible diagnostic character combinations for a future revision of the Gerrinae and discuss the fossil record. While some of the relationships reinstate earlier ideas, e.g., Limnogonus and Neogerris being sister groups, many others are poorly supported and poorly diagnosed, and therefore, we retain from drawing taxonomic conclusions until data is available from the remaining genera, which can support a future generic revision of the Gerrinae. The updated checklist of species assigned to the subfamily is therefore based on the established taxonomy.
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New records of Gerromorpha (Insecta: Hemiptera: Heteroptera) from Costa Rica
Check List, 2014Co-Authors: Bernald Pacheco-chaves, Felipe Ferraz Figueiredo Moreira, Monika SpringerAbstract:The Gerromorpha from Costa Rica are poorly studied, except the Gerridae. Aiming to fill this gap, specimens collected across the country were examined. Lipogomphus leucostictus, Hydrometra alloiona, H. australis, H. huallagana, Microvelia albonotata, M. argentata, M. laesslei, M. mimula, M. panamensis, M. psilonota, M. pulchella, M. signata, and M. torquata are newly recorded from Costa Rica. Presences of Hebrus concinnus, Mesovelia amoena, and Platyvelia brachialis are confirmed. New provincial records are provided for Hebrus consolidus, H. spiculus, Hydrometra caraiba, Mesovelia mulsanti, Mesoveloidea williamsi, Microvelia reflexa, M. schmidti, and Stridulivelia cinctipes.
