Pterorthochaetes cribricollis

Description. Size: HL = 0.90 mm; HW = 1.30 mm; PL = 1.32 mm; PW = 2.20 mm; EL = 2.25 mm; EW = 2.15 mm. Overall morphology as in generic description. Dark brown, shiny, setation yellowish, sternum, tarsi and antennae reddish-brown. Head: completely and uniformly covered by impressed comma-shaped punctures with posterior openings, spaced out by a distance of about half their diameter. Anterior portion of clypeus with one or two irregular transverse anastomosing lines. Interocular distance about 9 times the maximum width of dorsal ocular area. Pronotum: margins completely bordered, lateral margins with a row of erect thick yellowish slightly clavate setae, about as long as the distance between them. Pronotal setation made of thick medium sized clavate yellowish setae, punctation as follows: disc covered by impressed short transverse comma-shaped punctures, with posterior openings and containing a small fine setigerous pore, sides with a few larger more curved comma-shaped punctures opening backwards. Scutellum: basally with two longitudinal irregular rows of horseshoe-shaped punctures, uniting towards apex. Elytra: humeral callus poorly pronounced, sutural stria occupying medial and distal third. Elytral punctation as follows: uniformly covered by irregular longitudinal rows of mixed simple impressed small punctures and medium-sized horseshoe-shaped punctures opening backwards, larger on sides and apical third. Interpunctural distance subequal to puncturelength. Aedeagus: basal piece about three times as long as parameres. Parameres slightly asymmetrical, internal sac distally with some irregular weak sclerotisations (Fig. 12 A, Fig. 13 A-C). Male genital segment: as in Fig. 11 D. Bursal sclerites: slightly asymmetrical, as in Fig. 14 C.