The genus Platynectes (Coleoptera: Dytiscidae: Agabinae) in Central America, with the discovery of the northernmost Neotropical species in Oaxaca, Mexico, and nomenclatural notes on the subgenus Agametrus

Platynectes (Agametrus) zoque sp. nov. is described from the state of Oaxaca, Mexico. It is externally similar to the only Central American Platynectes, P. nitens (Sharp) from Panama and Costa Rica, but can be recognized by the shape of the male genitalia. The genetic distance between both species...

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Main Authors: Jaroslav Šťastný Šťastný, Dominik Vondráček, Emmanuel Arriaga-Varela, Jiří Hájek
Format: Article
Language:English
Published: Universidad Nacional Autónoma de México 2020-12-01
Series:Revista Mexicana de Biodiversidad
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Online Access:https://revista.ib.unam.mx/index.php/bio/article/view/3394
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author Jaroslav Šťastný Šťastný
Dominik Vondráček
Emmanuel Arriaga-Varela
Jiří Hájek
author_facet Jaroslav Šťastný Šťastný
Dominik Vondráček
Emmanuel Arriaga-Varela
Jiří Hájek
author_sort Jaroslav Šťastný Šťastný
collection DOAJ
description Platynectes (Agametrus) zoque sp. nov. is described from the state of Oaxaca, Mexico. It is externally similar to the only Central American Platynectes, P. nitens (Sharp) from Panama and Costa Rica, but can be recognized by the shape of the male genitalia. The genetic distance between both species is 6.8% in the cox1 gene fragment. The finding of Platynectes in Mexico extends the known distribution of the genus in the Americas by about 1,300 km to the northwest. Thirteen species of the subgenus Agametrus Sharp are currently known, occurring in the Cordilleras from Chile to Mexico. A list of all species is provided including 10 new combinations resulting from the phylogenetic  analysis of Toussaint et al. (2017): Platynectes (Agametrus) boliviensis (Régimbart, 1899), P. (A.) humilis (Sharp, 1882), P. (A.) labratus (Sharp, 1882), P. (A.) nitens (Sharp, 1887), P. (A.) peruvianus (Laporte, 1835), P. (A.) rotundatus (Brinck, 1948) (all from Agametrus); P. (A.) curtulus (Régimbart, 1899), P. (A.) darlingtoni (Guéorguiev, 1971), P. (A.) gaudichaudii (Laporte, 1835), and P. (A.) muelleri (Kirsch, 1865) (all from Leuronectes Sharp). Platynectes (Gueorguievtes) darlingtoni Guéorguiev, 1972, a junior homonym of P. (A.) darlingtoni (Guéorguiev, 1971), is replaced with its junior subjective synonym P. multimaculatus Watts, 1978.  
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spelling doaj-art-b7e56ebf644f4969a66cf5618b76f6442025-08-20T01:49:51ZengUniversidad Nacional Autónoma de MéxicoRevista Mexicana de Biodiversidad1870-34532007-87062020-12-019110.22201/ib.20078706e.2020.91.3394The genus Platynectes (Coleoptera: Dytiscidae: Agabinae) in Central America, with the discovery of the northernmost Neotropical species in Oaxaca, Mexico, and nomenclatural notes on the subgenus AgametrusJaroslav Šťastný Šťastný0Dominik Vondráček1Emmanuel Arriaga-Varela2Jiří Hájek3Independent scholar.National Museum Department of EntomologyUniversidad de Guadalajara Centro de Estudios en Zoología, CUCBANational Museum Department of Entomology Platynectes (Agametrus) zoque sp. nov. is described from the state of Oaxaca, Mexico. It is externally similar to the only Central American Platynectes, P. nitens (Sharp) from Panama and Costa Rica, but can be recognized by the shape of the male genitalia. The genetic distance between both species is 6.8% in the cox1 gene fragment. The finding of Platynectes in Mexico extends the known distribution of the genus in the Americas by about 1,300 km to the northwest. Thirteen species of the subgenus Agametrus Sharp are currently known, occurring in the Cordilleras from Chile to Mexico. A list of all species is provided including 10 new combinations resulting from the phylogenetic  analysis of Toussaint et al. (2017): Platynectes (Agametrus) boliviensis (Régimbart, 1899), P. (A.) humilis (Sharp, 1882), P. (A.) labratus (Sharp, 1882), P. (A.) nitens (Sharp, 1887), P. (A.) peruvianus (Laporte, 1835), P. (A.) rotundatus (Brinck, 1948) (all from Agametrus); P. (A.) curtulus (Régimbart, 1899), P. (A.) darlingtoni (Guéorguiev, 1971), P. (A.) gaudichaudii (Laporte, 1835), and P. (A.) muelleri (Kirsch, 1865) (all from Leuronectes Sharp). Platynectes (Gueorguievtes) darlingtoni Guéorguiev, 1972, a junior homonym of P. (A.) darlingtoni (Guéorguiev, 1971), is replaced with its junior subjective synonym P. multimaculatus Watts, 1978.   https://revista.ib.unam.mx/index.php/bio/article/view/3394AdephagaDiving beetlesTaxonomyNew combinationsCytochrome oxidase IBarcoding
spellingShingle Jaroslav Šťastný Šťastný
Dominik Vondráček
Emmanuel Arriaga-Varela
Jiří Hájek
The genus Platynectes (Coleoptera: Dytiscidae: Agabinae) in Central America, with the discovery of the northernmost Neotropical species in Oaxaca, Mexico, and nomenclatural notes on the subgenus Agametrus
Revista Mexicana de Biodiversidad
Adephaga
Diving beetles
Taxonomy
New combinations
Cytochrome oxidase I
Barcoding
title The genus Platynectes (Coleoptera: Dytiscidae: Agabinae) in Central America, with the discovery of the northernmost Neotropical species in Oaxaca, Mexico, and nomenclatural notes on the subgenus Agametrus
title_full The genus Platynectes (Coleoptera: Dytiscidae: Agabinae) in Central America, with the discovery of the northernmost Neotropical species in Oaxaca, Mexico, and nomenclatural notes on the subgenus Agametrus
title_fullStr The genus Platynectes (Coleoptera: Dytiscidae: Agabinae) in Central America, with the discovery of the northernmost Neotropical species in Oaxaca, Mexico, and nomenclatural notes on the subgenus Agametrus
title_full_unstemmed The genus Platynectes (Coleoptera: Dytiscidae: Agabinae) in Central America, with the discovery of the northernmost Neotropical species in Oaxaca, Mexico, and nomenclatural notes on the subgenus Agametrus
title_short The genus Platynectes (Coleoptera: Dytiscidae: Agabinae) in Central America, with the discovery of the northernmost Neotropical species in Oaxaca, Mexico, and nomenclatural notes on the subgenus Agametrus
title_sort genus platynectes coleoptera dytiscidae agabinae in central america with the discovery of the northernmost neotropical species in oaxaca mexico and nomenclatural notes on the subgenus agametrus
topic Adephaga
Diving beetles
Taxonomy
New combinations
Cytochrome oxidase I
Barcoding
url https://revista.ib.unam.mx/index.php/bio/article/view/3394
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