Symbiopsocus Li, 1997

Ning, Jinjin, Li, Fasheng & Liu, Xingyue, 2020, The first record of the bark louse genus Symbiopsocus (Psocodea: Psocidae) from Vietnam, with description of a new species, Zootaxa 4759 (3), pp. 413-420 : 414

Symbiopsocus Li

Symbiopsocus Li, 1997: 491 . Type species: Symbiopsocus leptocladus Li, 1997: 491 (original designation).

Diagnosis. Adults with well-developed wing, small to medium sized, length from post clypeus to wing tip 4–6 mm. Antenna as long as or slightly longer than forewing. Wings usually pale yellow, immaculate, but with brown markings in a few species; Sc ending free; Rs and M connected by a short crossvein or fused for a short distance or meeting at a point; M+Cu 1a and first part of Cu 1a together arranged as a nearly continuous, straight line; areola postica subtriangular; male hypandrium usually symmetrical and with two tiers of lobes; phallosome slender and rhomboid-shaped; female subgenital plate with V-shaped sclerotized region on posterior lobe; ventral valve slender with acutely tapering apex; dorsal valve broad with acutely tapering apex; external valve longer than wide, mostly with posterior lobe.