Platyhydnobius andersoni 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 : 55-56

Platyhydnobius andersoni Peck & Cook , new species

( Figs. 156–159 , 160 )

Type material. Holotype: ♂ ( CMNC). MEXICO: Chiapas State: Mpio. (Municipio) Tapalapa, Cerro El Calvario, near Tapalapa , 17°11'11.9"N, 93°07'21.0"W, 23.VII.2003, 2200 m, R. Anderson, 2003-118, wet cloud forest litter . Paratypes (4): MEXICO: Chiapas State: with same data as holotype, ♂, 3♀♀ ( SBPC) .

Diagnostic description. Reddish brown, shining; elytral bases with a narrow transverse yellow band; elytral epipleurae yellow. Length of pronotum + elytra = 3.0–3.4 mm (males), 3.4 mm (females). Head moderately coarsely, densely punctate. Pronotum broad, widest at base, sides weakly rounded, basal angles nearly right-angled; ratio length:width = 1:1.9; moderately coarsely, densely punctate. Elytra short, wider than pronotum, ratio length:width = 1:0.9; 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 minutely punctate, transversely striolate. Antennal club ( Fig. 156 ) slender, ratio club width:length = 1:3.7; width ratio of antennomeres 7:8:9 = 1.4:1:1.5. In both sexes, all femora unarmed; all tibiae slender, spinose on outer margin, protibiae and mesotibiae weakly widened apically, male mesotibia weakly curved. Male. Aedeagus ( Fig. 157 ) with median lobe elongate, apex rounded. Parameres longer than median lobe, flat, with small lateral lobes near base. Paramere apices thin, weakly expanded, with a single dorsal seta and many small setae apically. Female. Coxites ( Fig. 159 ) elongate, narrow, with apical and subapical setae; styli elongate, inserted at apices of coxites. Sternite 8 ( Fig. 158 ) rounded apically; anterior apophysis narrowing to rounded apex.

Bionomics and distribution. Known only from cloud forest litter in July at the type locality ( Fig. 160 ).

Etymology. Named in recognition of the collector, Dr. Robert S. Anderson, entomologist of the Canadian Museum of Nature, and an assiduous collector of litter inhabiting beetles in Central America.

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 156–159. Platyhydnobius andersoni. 156. Right antenna, dorsal view. 157. Aedeagus, dorsal view. 158. Female sternite 8, ventral view. 159. Female coxites and styli, ventral view. Scale bar = 0.3 mm (Fig. 159), 0.4 mm (Fig. 158), 0.5 mm (Figs. 156, 157).