Belongs within: Caeciliusetae.
Siniamphipsocus is a genus of barklice found in northeastern Asia (Li 2002).
Hairy-winged barklice
Published 9 September 2017
For my next semi-random post, I drew Siniamphipsocus, a genus of more than twenty species of barklice known from eastern Asia. Most of these species were described by China by the almost ludicrously prolific psocopterologist Li Fasheng who over the course of his career has described close to 1000 psocopteran species—nearly a fifth of the world’s barklouse fauna. It should be noted, though, that this productivity has not entirely come without criticism: for instance, in the case of the Siniamphipsocus species, most if not all are known from a single sex with some described from males and others from females (Li 2002).
Siniamphipsocus is a genus of the Amphipsocidae, a family of barklice most easily recognised by their wings which have a double row of setae along each of the veins. Amphipsocids can be relatively large as barklice go: the largest Siniamphipsocus species, S. aureus, has a body length of four millimetres, with the forewings being up to 6.75 millimetres long. Features distinguishing Siniamphipsocus from other amphipsocids include the absence of the brush of hairs present at the base of the hind wing in many other species, the absence of a spur vein in the rear of the forewing pterostigma, and the presence of a row of minute spines along the fore femur (Li 2002). Distinguishing the individual species of the genus requires fine attention to details such the patterns of markings on the face, the proportions of the wing veins, and details of the genitalia.
Systematics of Siniamphipsocus
Characters (Li 2002): Medium size, body length (to wing tip) 4.35–6.75 mm. Antennae 13 segments, shorter than forewings; inner mandible tip not forked, gradually narrowed; labial palp setose, 4 segments; tarsus two-segmented, claws without ventral teeth, claw pads wide, inner side of fore legs with nail-like spines, usually with hairy peduncle on mid tarsus, and hairy peduncle on hind tarsus. Wings narrow and long, without posterior angle, Cu1a cell high, arc-shaped at end, usually 1.4–2.2 times height. Hind wing R2+3 short, ending at front edge, usually less than half of R4+5. No hair tuft at base of front edge of hind wing. Male anal plate with rough area, penis ring closed, penis spherical or oblong, female genital process slender, dorsal valve base enlarged, outer valve degenerate, without bristles, spermatheca spherical, spermatheca pump pear-shaped or bell-shaped.
<==Siniamphipsocus Li 1997L02 [=Sineamphipsocus (l. c.)L03, Siniamphipsoocus (l. c.)L03; Siniamphipsocini]
|--*S. aureus Li 1997L02
|--S. acutus Li 2002L03
|--S. beijianicus Li 2002L02
|--S. bellulus Li 2002L02
|--S. betulicolus Li 2002L02
|--S. biconjugarus Li 2002L02
|--S. bilinearis Li 2002L02
|--S. changbaishanicus Li 2002L02
|--S. chiloscotius Li 2002L02
|--S. deltoides Li 2002L03
|--S. dichasialis Li 2002L02
|--S. emeiensis Li 2002 [=S. emeinesis]L02
|--S. flavifrontus Li 2002L02
|--S. fusconervosus (Enderlein 1906) [=Kolbia fusconervosa]M03
|--S. huashanensis Li 2002 [=S. huashaniensis]L03
|--S. mecocephalus Li 2002L02
|--S. pedatus Li 2002L02
|--S. pertenius Li 2002L02
|--S. platyocheilus Li 1997L02
|--S. sunae Li 2002L02
`--S. yangzijiangiensis Li 1997 [=S. yangzijiangensis]L03
*Type species of generic name indicated
References
[L02] Li F. 2002. Psocoptera of China vol. 1. Science Press: Beijing.
[L03] Lienhard, C. 2003. Nomenclatural amendments concerning Chinese Psocoptera (Insecta), with remarks on species richness. Revue Suisse de Zoologie 110 (4): 695–721.
[M03] Mockford, E. L. 2003. New species and records of Psocoptera from the Kuril Islands. Mitt. Mus. Nat.kd. Berl., Dtsch. Entomol. Z. 50 (2): 191–230.