Three additional new genera of acidocerine water scavenger beetles from the Guiana and Brazilian Shield regions of South America (Coleoptera, Hydrophilidae, Acidocerinae)

By

Girón, Jennifer C.
Short, Andrew

Type

Article

Date of Publication

2019

Original Publication

ZooKeys

Volume

855

Pages

109-154

Subjects

Aquatic beetles , Neotropical region , new species , seepage habitat , taxonomy

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers

Identifiers

DOI: https://doi.org/10.3897/zookeys.855.33013

 

Abstract

Recent study of the water scavenger beetle subfamily Acidocerinae in the Neotropical region has uncovered numerous undescribed species that are not able to be placed in existing genera. Here, we describe three new genera to accommodate 17 of these new species from South America:Aulonocharesgen. nov.forAulonochareslingulatussp. nov.(French Guiana, Suriname),Aulonocharesnovoairensissp. nov.(Brazil), andAulonocharestubulussp. nov.(Brazil, Guyana, Suriname, Venezuela);Ephydrolithusgen. nov.forEphydrolithushamadaesp. nov.(Brazil),Ephydrolithusminorsp. nov.(Brazil),Ephydrolithusogmossp. nov.(Brazil),Ephydrolithusspiculatussp. nov.(Brazil), andEphydrolithustelisp. nov.(Brazil); andPrimocerusgen. nov.forPrimoceruscuspidissp. nov.(Venezuela),Primocerusgigassp. nov.(Venezuela),Primocerusneutrumsp. nov.(Guyana, Suriname, Venezuela),Primocerusocellatussp. nov.(Venezuela),Primoceruspetilussp. nov.(Brazil),Primoceruspijiguaensesp. nov.(Venezuela),Primocerusmaipuresp. nov.(Venezuela),Primocerussemipubescenssp. nov.(Guyana), andPrimocerusstriatolatussp. nov.(Suriname). The genusEphydrolithusgen. nov.is currently known to be restricted to seepages in the mountainous regions of the Brazilian Shield.Aulonocharesgen. nov.andPrimocerusgen. nov.are both currently only known from the Guiana Shield, though widespread in that region where they are associated with streams and seeps. We present differential diagnoses, maps, habitat details, and illustrations of all new genera and species here described.