Gymnanthelius
Creators: name: Perkins, Philip D.
Publisher: name: Zenodo
Year: 2004
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Hydraenidae
Gymnanthelius

description: Key to Species of Gymnanthelius
1 Elytral discal punctures non­serial (Fig. 8) ................................................................... 2
­ Elytral discal punctures serial (Fig. 5) .......................................................................... 4
2 Elytral punctures entirely random, except one row along explanate margin; elytra weakly tumid over posterior declivity; punctures large and deep (Fig. 9)...................... ........................................................................................................ maxipunctus n. sp.
­ Elytra punctures random on disc, becoming serially arranged over posterior declivity; elytra not tumid over posterior declivity ....................................................................... 3
3 Elytral disc scabrous, surface very uneven between large random punctures; "series" 5 and 6 random; size larger, ca. 2.08 mm long (Fig. 8)............................... tunicus n. sp.
­ Elytral disc non­scabrous, punctures smaller and interstices shining; series 5 and 6 serial or subserial; size smaller, ca. 1.75 mm long (Fig. 7)..... hieroglyphicus (Deane)
4 Dorsum black or piceus with some faint metallic reflections; reliefs of head, pronotum and elytra shining; metasternum entirely hydrofuge pubesent (Figs. 1, 5) porchi n. sp.
­ Dorsum brownish with cupreus and/or aureus metallic reflections; pronotal reliefs dull or very weakly shining, microreticulate or effacedly microreticulate; metasternum with or without glabrous area........................................................................................ 5
5 Elytral punctures each with four minute shining granules, two each at anterior and posterior margins; metasternum with small, shining, non­pubescent area basomedially (Fig. 2) ............................................................................................. clypeatus (Deane)
­ Elytral punctures without granules (Fig. 6); metasternum with or without glabrous area ....................................................................................................................................... 6
6 Pronotal median groove widest near base, tapering anteriorly to point; metasternum with glabrous area basomedially (Fig. 4) ................................... lamingtonensis n. sp.
­ Pronotal median groove widest anteriorly (Fig. 6); metasternum entirely hydrofuge pubescent.......................................................................................................................7
7 Head, pronotum and elytra dull, effacedly microreticulate; elytral serial punctures smaller, interval margins not irregular; size smaller, ca. 1.50 mm long (Fig. 3) ........... ............................................................................................................ cupreus (Deane)
­ Head and especially pronotum dull, microreticulate, markedly contrasting with shining elytral reliefs; elytral punctures large, margins of intervals irregular; size larger, ca. 1.95 mm long (Fig. 6) ......................................................................... opacicollis n. sp.
description: Published as part of Perkins, Philip D., 2004, A revision of the Australian endemic water beetle genus Gymnanthelius Perkins (Coleoptera: Hydraenidae), pp. 1-39 in Zootaxa 585 on pages 6-7, DOI: 10.5281/zenodo.157433