Two new species of the megadiverse lentic diving-beetle genus Hydrovatus (Coleoptera, Dytiscidae) described from NE Thailand

Here we describe two new Hydrovatus species (Coleoptera: Dytiscidae: Hydroporinae: Hydrovatini) from the province of Khon Kaen, Isan region in NE Thailand. Hydrovatus is the third most species rich genus of diving beetles (Dytiscidae). It occurs on all continents except Antarctica and now numbers 21...

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Bibliographic Details
Published in:ZooKeys
Main Authors: Bistrom, Olof, Bergsten, Johannes
Format: Article in Journal/Newspaper
Language:unknown
Published: 2016
Subjects:
Hydrovatus
Coleoptera
Dytiscidae
taxonomy
new species
keys to species
Thailand
Antarc*
Antarctica
Online Access:https://zenodo.org/record/167087
https://doi.org/10.3897/zookeys.632.10483
Description
Summary:Here we describe two new Hydrovatus species (Coleoptera: Dytiscidae: Hydroporinae: Hydrovatini) from the province of Khon Kaen, Isan region in NE Thailand. Hydrovatus is the third most species rich genus of diving beetles (Dytiscidae). It occurs on all continents except Antarctica and now numbers 210 currently recognized species. Both new species, H. diversipunctatus sp. n. and H. globosus sp. n., were collected at lights and are only known from the type locality “Khon Kaen” (a city and province). Diagnoses based on morphology for the separation from closely related species are given together with illustrations of male genitalia and habitus photos. We provide a determination key to Old World species of the pustulatus species group and to Oriental species of the oblongipennis species group.

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