Psephenops Grouvelle 1898
Creators: name: Novelo-Gutiérrez, Rodolfo
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Psephenidae
Psephenops

description: Key to adult males of Psephenops from Mesoamerica
(Modified from Arce- Pérez & Novelo-Gutiérrez 2013)
1 Pronotum with 3 small tuberculiform prominences; elytra with several longitudinal ridges on disc............... grouvellei
- Pronotum without tuberculiform prominences, elytra without longitudinal ridges on disc............................. 2
2 Protibiae with a denticle................................................................................ 3
- Protibiae without a denticle........................................................................ prestone
3 Tarsal lobes enlarged (Fig. 17)........................................................................... 4
- Tarsal lobes short (Fig. 18)............................................................................. 5
4 Basal half of parameres, in dorsal view, separated by a deep cleft (Fig. 5)......................................... 7
- Basal half of parameres, in dorsal view, fused (Fig. 13)........................................................ 9
5 Parameres truncated (Fig. 19); 4th maxillary palpomere at least twice as long as preceding palpomeres.............. s mithi
- Parameres not truncated; 4th maxillary palpomere not as above.................................................. 6
6 Parameres strongly convergent on apical third, medial margin of each paramere separate each other by a narrow, drop-like cleft (Fig. 20)......................................................................................... lupita
- Parameres more or less parallel on apical third, medial margin of each paramere separate each other by a wide, U-shaped cleft (Fig. 21)....................................................................................... shepardi
7 Apices of parameres, in dorsal view, spine-like, widely divergent (Fig. 22).............................. spiniparameri
- Apices of parameres, in dorsal view, convergent, not spine-like (Figs 20, 21)...................................... 8
8 Prosternal process flat, with apex lanceolate. Penis with a small, lateral tooth (Fig. 23)....................... mexicanus
- Prosternal process subcylindrical, with apex bifid. Penis lacking lateral projections (Fig. 5)...................... bifidus
9 Small individuals, length less than 2.4 mm, antennae moniliform-serrate, parameres truncate, with apex straight (Fig. 24).............................................................................................. panamaensis
- Large individuals, length greater than 2.5 mm, antennae not serrate, parameres not truncate.......................... 10
10 Antennae long, filiform; fore- and middle legs with segments 1 and 2 lobulate, hind legs only with segment 1 lobulate (Haiti)............................................................................................. haitianus
- Antennae short, moniliform; all legs with segments 1 and 2 lobulate............................................ 11
11 Elytra slightly striate. Parameres, in dorsal view abruptly widened on apical fifth, with apex rounded; penis digitiform and y slightly produced apically (Fig. 25).............................................................. maculicollis
- Elytra smooth. Parameres, in dorsal view, uniformly widened, apex subtriangular; penis digitiform, not produced apically, with a basal, lateral, subtriangular projection to each side (Fig. 13).......................................... triangularis
description: Published as part of Novelo-Gutiérrez, Rodolfo, 2017, Two new species of Psephenops Grouvelle (Coleoptera: Byrrhoidea: Psephenidae) from Panama, pp. 109-118 in Zootaxa 4323 (1) on pages 117-118, DOI: 10.11646/zootaxa.4323.1.8, http://zenodo.org/record/897413