Platyhydnobius bicolor Peck & Cook, 2009

Peck, Stewart B. & Cook, Joyce, 2009, Review of the Sogdini of North and Central America (Coleoptera: Leiodidae: Leiodinae) with descriptions of fourteen new species and three new genera, Zootaxa 2102 (1), pp. 1-74 : 56-57

Platyhydnobius bicolor Peck & Cook , new species

( Figs. 160 , 161–162 )

Type material. Holotype: ♂ ( CMNC). MEXICO: Chiapas State: Mpio. (Municipio) El Porvenir, El Porvenir , 15°28'03"N, 92° 27.VII. 2005, 2950 m. R. Anderson, 2005-01, oak-pine-oyamel fir forest litter.

Diagnostic description. Shining, dark brown to black except elytra, which are yellow with a broad black lateral border from behind humeri to apex, and a narrow black sutural border. Length of pronotum + elytra = 2.7mm (male). Head finely punctate. Pronotum broad, widest at base, sides weakly rounded, basal angles obtuse; ratio length:width = 1:1.8; finely punctate, with fine reticulate microsculpture. Elytra short, wider than pronotum, ratio length:width = 1:0.8; with 9 regular, closely punctate striae; striae 6 and 7 do not reach apex, stria 8 does not reach base, stria 1 weakly impressed; intervals sparsely, minutely punctate, transversely striolate; uneven intervals with scattered larger punctures. Antennal club ( Fig. 161 ) moderately slender, ratio club width:length = 1:3.2; width ratio of antennomeres 7:8:9 = 1.4:1:1.8. All femora unarmed; all tibiae slender, spinose on outer margin, protibiae and mesotibiae weakly widened apically, mesotibia weakly curved.

Male. Aedeagus ( Fig. 162 ) with median lobe elongate, narrowed apically to small rounded tip. Parameres longer than median lobe, flat, with small lateral lobes near base. Paramere apices thin, weakly expanded, with two dorsal setae and many small setae apically. Female. Unknown.

Bionomics and distribution. Known only from the type specimen, collected in forest litter in July ( Fig. 160 ).

Etymology. Named with referenced to the distinctly bicolored pattern of the elytra.

Figures

FIGURE 160. Known localities in Mexico and Central America of Platyhydnobius andersoni (black square), P. bicolor (open triangle), P. calvario (open square), P. howdenorum (black triangle), P. latigra (black dots), P. newtonorum (asterisk).

FIGURES 161–162. Platyhydnobius bicolor. 161. Right antenna, dorsal view. 162. Aedeagus, dorsal view. Scale bar = 0.4 mm (Fig. 162), 0.5 mm (Fig. 161).