ARCHIPSOCETAE, 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

ARCHIPSOCETAE , INFRAORDER NOV.

Small to medium in size, about 1–3 mm in length (from head to tips of closed wings). Brown to reddishbrown in colour. Almost all body surfaces densely covered with long hyaline setae. Members mostly bark dwellers, living within dense silk nests.

Head with rounded vertex; postclypeus strongly convex, epistomal suture with broad internal ridge; anteclypeus weakly sclerotized; eyes small, no sexual size dimorphism; ocelli usually present, not clustered on small tubercle; antennae short; mandible short, with rounded outer margin; lacinial tip bicuspid; galea flattened; labial palpus rounded. Prothorax well developed, bulged dorsally. Pterothorax not strongly bulged dorsally, dorsal margin almost same level with vertex; median part of mesoscutellum triangular; precoxal bridge of mesothorax broad; meso-trochantin narrow; second phragma strongly swollen posteriorly; membranous region of metaepisternum narrow. Wing polymorphism present: macropterous, micropterous, or apterous. Forewing almost uniformly brown, posteroproximal corner strongly angled; veins, membrane, and wing margin densely clothed with long, hyaline setae; veins faint; pterostigma shallow, weakly thickened; M unbranched; areola postica flattened. Hindwing hyaline, narrow in shape, posteroproximal corner slightly extended posteriorly; veins and membrane covered with minute setae, distal and posterior margins with longer setae; veins faint and reduced to unbranched Rs, M, CuA, and CuP; Sc, R 1, and A almost indistinguishable. Tarsi 2-segmented; preapical tooth of pretarsal claw absent; pulvillus broad. Abdomen lacking eversible vesicles ventrally. Male genitalia: hypandrium simply rounded posteriorly. Phallosome: aedeagus rounded or pointed apically; parameres weakly sclerotized or more often completely absent; aedeagus and phallobase sometimes detached; phallobase closed or opened apically; endophallus without sclerite. Female genitalia: Subgenital plate simply rounded or slightly flattened distally. Gonapophyses modified, ventral valve absent; dorsal valve present or absent, narrow and short if present; external valve large, with long marginal bristles. All valves absent in viviparous species.

Included family: Archipsocidae .