HEMIPSOCETAE, Yoshizawa, 2002

Yoshizawa, Kazunori, 2002, Phylogeny and higher classification of suborder Psocomorpha (Insecta: Psocodea: ‘ Psocoptera’), Zoological Journal of the Linnean Society 136 (3), pp. 371-400 : 395

HEMIPSOCETAE , INFRAORDER NOV.

Medium-sized, about 2.5–3.5 mm. Usually whitish to pale brown in coloration, with blackish bristles. Deadfoliage dwellers.

Head with rounded vertex; clypeus not strongly bulged, epistomal suture reduced; anteclypeus sclerotized; eyes rather small, no sexual size dimorphism; ocelli complete, not clustered on small tubercle; mandible short, with smoothly rounded outer margin; lacinial tip bicuspid; galea flattened; labial palpus rounded. Prothorax rather well developed. Pterothorax strongly bulged dorsally, its dorsal margin higher than vertex; mesoscutellum somewhat pentagonal medially; precoxal bridge of mesothorax narrow; mesotrochantin broad basally; membranous region of metaepisternum narrow. Forewing hyaline to very pale brown in ground colour, bearing marginal setae; posteroproximal corner strongly angled; pterostigma shallow; veins and wing margin setose, veins with one row of setae except CuP bare; Rs and M joined at point; M 2-branched; areola postica low; CuA 1 connected with stem of M by crossvein; A 2 absent. Hindwing glabrous, posteroproximal corner angled; Sc strong basally but faint distally; Rs and M +Cu fused for long distance basally; Rs and M fused for short distance. Tarsi 2-segmented; preapical tooth of pretarsal claw present; pulvillus broad. Abdomen lacking eversible vesicles ventrally. Male genitalia: paraproct with distal process directed posteriorly to dorsally. Hypandrium simple. Phallosome triangular, consisting of thin phallobase and paramere; aedeagus absent; parameres strongly bent internally, supporting posterior margin of endophallus; endophallus with or without sclerotized portion. Female genitalia: subgenital plate simple, posterior margin smoothly rounded or slightly hollowed at middle. Gonapophyses complete; ventral valve and dorsal valve simple, narrow, pointed apically; external valve large.

Included family: Hemipsocidae .