Review of the whirligig beetle genus Gyrinus of Venezuela (Coleoptera: Gyrinidae)

Gustafson Grey T., Short Andrew E. Z.
Acta Entomologica Musei Nationalis Pragae 57(2): 479-520, 2017
Published online: 31st December 2017
Views: 1370
Abstract: The Venezuelan species of the genus Gyrinus Geoffroy, 1762 are reviewed (Gyrinidae: Gyrininae: Gyrinini). The Venezuelan Gyrinus fauna is found to be comprised of nine species distributed among the subgenera Neogyrinus Hatch, 1926 and Oreogyrinus Ochs, 1935, although Gyrinus (Oreogyrinus) colombicus Régimbart, 1883 is known from imprecisely localized and potentially mislabeled specimens and the species presumably does not occur in Venezuela. Three new species are described: G. (Oreogyrinus) vinolentus sp. nov. from the Andes, and G. (Oreogyrinus) iridinus sp. nov. and G. (Neogyrinus) sabanensis sp. nov., from the Guiana Shield region. Two new synonymies are established: G. amazonicus Ochs, 1958 syn. nov. is synonymized with G. guianus Ochs, 1935, and G. racenisi Ochs, 1953 syn. nov. is synonymized with G. ovatus Aubé, 1838. Gyrinus (Oreogyrinus) feminalis Mouchamps, 1957, described from Venezuela from two female syntypes only, is considered as species inquirendum, as the types were not found. For each species a dorsal habitus, illustration of male and female genitalia, and distribution map are provided. A key and checklist for the Venezuelan Gyrinus species is included. Las especies del Venezuela de género Gyrinus Geoffroy, 1762 son revisadas. En Venezuela Gyrinus se compone de ocho especies en dos subgéneros Neogyrinus Hatch, 1926 y Oreogyrinus Ochs, 1935. Tres especies nuevas son escriban: G. (Neogyrinus) sabanensis sp. nov. del Gran Sabana, G. (Oreogyrinus) vinolentus sp. nov. del norte Andes venezolanos, y G. (Oreogyrinus) iridinus sp. nov. del Unturán montañas de Venezuela Amazonas. Dos nuevas sinonimias son establecidos: G. amazonicus Ochs, 1958 syn. nov. con G. guianus Ochs, 1935 y G. racenisi Ochs, 1953 syn. nov. con G. ovatus Aubé, 1838. Cada especie es acompañada de imágenes del habitus dorsal, ilustrado del edeago y gonocoxae, y mapa de distribución. Se presentan una clave para las especies del Venezuela de género Gyrinus y una lista de la especies venezolanos de género Gyrinus.
Key words: Coleoptera, Gyrinidae, aquatic beetles, taxonomy, new species, new synonyms, distribution, Venezuela, Neotropical Region
In memoriam Ing. René FouquèRenefouqueosis peruviensis, a new genus and species of Stenosini (Coleoptera: Tenebrionidae) from Peru with a key to the Stenosini of the World and notes on the genera Anchomma and FitzsimonsiumThe species of Gonocnemis and Paragonocnemis from Borneo with notes on synonymy in the Oriental species (Coleoptera: Tenebrionidae)Paulianesthes fouquei sp. nov., the second species of the endemic genus from Madagascar (Coleoptera: Tenebrionidae: Tentyriini)Taxonomic changes within Imatidiini and Hybosispini (Coleoptera: Chrysomelidae: Cassidinae)A new genus and species of grass specialist short-winged leafhopper from Chile and Argentina (Hemiptera: Cicadellidae: Deltocephalinae: Faltalini)Eotrechus fuscus sp. nov. from Northeastern India with a key to Indian species (Hemiptera: Heteroptera: Gerridae)Taxonomic review of the plant bug genera Amapacylapus and Cylapus with descriptions of two new species and a key to the genera of Cylapini (Hemiptera: Heteroptera: Miridae)Two new species of the phyline plant bug genus Randallopsallus from Southeast Asia (Hemiptera: Heteroptera: Miridae)HOSSEINI R. 2017: A new species of Isometopus from Iran (Hemiptera: Heteroptera: Miridae: Isometopinae)A new species of Anthocoris from Iran (Hemiptera: Heteroptera: Anthocoridae)Review of the whirligig beetle genus Gyrinus of Venezuela (Coleoptera: Gyrinidae)Four new species and new records of Canthysellus from Brazil (Coleoptera: Noteridae)A review of the Asian species of the Cercyon unipunctatus group (Coleoptera: Hydrophilidae: Sphaeridiinae)A review of the genus Cryptopleurum from China (Coleoptera: Hydrophilidae)Lisubatrus dongzhiweii gen. et sp. nov. from the Gaoligong Mountains, China (Coleoptera: Staphylinidae: Pselaphinae)NEWTON A. F., ŠVEC Z. & FIKÁČEK M. 2017: A new genus and two new species of Leiodinae from Chile, with keys to world genera of Sogdini and Leiodinae from Chile and Argentina (Coleoptera: Leiodidae).Morphology and biology of Malachius prolongatus (Coleoptera: Melyridae: Malachiinae)Revision of Epuraea of New Zealand (Coleoptera: Nitidulidae)Epistomius, a new genus of African forest litter Trachyphloeini, with descriptions of seven new species (Coleoptera: Curculionidae: Entiminae)Anaphes flavipes: redescription, neotype designation, and comparison with A. nipponicus (Hymenoptera: Chalcidoidea: Mymaridae)Four new species of Limonia from the Mediterranean (Diptera: Limoniidae)Revision of type and non-type material assigned to the genus Orthocladius by Goetghebuer (1940–1950), deposited in the Royal Belgian Institute of Natural Sciences (Diptera: Chironomidae)Macrocera rohaceki sp. nov. and other interesting records of Keroplatidae (Diptera) from southern and central Europe, with DNA sequence dataAlepia bifida, a new species of moth flies from Central America (Diptera: Psychodidae: Psychodinae)ROHÁČEK J. & BARBER K. N. 2016: Nearctic Anthomyzidae: a monograph of Anthomyza and allied genera (Diptera)Catalogue of type specimens of beetles (Coleoptera) deposited in the National Museum, Prague, Czech Republic Staphylinidae: Euaesthetinae, Leptotyphlinae, Megalopsidiinae, Oxyporinae and SteninaeAbstracts of the Immature Beetles Meeting 2017 October 5−6, Prague, Czech Republic