4.3. Genus

Type species.

Stenopsocus externus Banks, 1937: 259.

Diagnosis.

Body length from postclypeus to wing tip 4–7 mm. Antenna distinctly longer than body and forewing in length. Labrum with distal styli. Forewing with setose anterior margin and single-row setae on all veins except for CuP, CuP glabrous; pterostigma elongate, with a distinct posterior angle; Rsm slightly curved. Forewing pterostigma with variable brown markings, other regions transparent or yellowish. Genitalia from yellowish to dark brown. Male genitalia: tip of aedeagal arch not exceeding parameres. Female subgenital plate posteriorly convex; dorsal valve and ventral valve sclerotized, narrow; external valve reduced; spermathecal sac generally pear-shaped without pouch.

Distribution.

Oriental, Palaearctic and Australian regions.

Etymology.

The generic name is a combination of Greek “ neo- ” (meaning “ new ”) and “ Stenopsocus ”, meaning the new genus of Stenopsocidae. Gender masculine.

Remarks.

Based on morphological characters, we transferred 115 species previously placed in Stenopsocus to Neostenopsocus gen. n.. The checklist is provided ..