Xylothrips

Body length 6–8.5 mm, about 2–2.3 times as long as wide, elongate. Head, pronotum, abdomen and disc of elytra testaceous; posterior of elytra and declivity dark brown; antennae reddish, club often brown. Antenna with 10 antennomeres; first two elongate; antennomeres 3–7 forming a funicle, each transverse, fifth widest, together about as long as first club segment; antennomeres 8–10 forming an elongate club, about twice as long as rest of antenna, club matt without clear sensory impressions, with a rim of long erect hairs around each funicle segment and a series of erect hairs on inner side and one long erect hair on anterolateral angle of each club segment. Frons simple, finely punctured, with upwardly directed hairs, denser and longer in female; fronto-clypeal suture distinct, strongly impressed in middle; clypeus transverse, anterior margin arcuate, finely and densely punctured. Eyes rather large, oval, detached from temples posteriorly. Pronotum with distinct, ridge-like lateral carinae extending to basal margin forming acute posterolateral angles; sides moderately to broadly rounded, attenuated anteriorly, widest close to posterior margin; with a series of upwardly-directed teeth laterally, gradually reduced in size from anterior to summit, mixed with small teeth and tubercles, with fine, shallow, well-separated punctures. Scutellum small, tongue-shaped, finely punctured or glabrous, shining. Elytra 1.7–1.85 times as long as pronotum, 1.45–1.65 times as long as wide, disc parallel-sided, widest at middle of declivity; subequal to pronotum in width, strongly convex, shining, strongly and evenly punctured, almost glabrous on disc and declivity except sparse tiny pubescence on apical part of declivity; sutural margin slightly raised from summit to near apex of declivity and rather strongly raised at apex; upper margin of declivity with three pairs of tubercles and one pair of elongate calluses at side. Legs: procoxae contiguous, mesocoxae narrowly separated; pro- and mesotibiae grooved on external face, widened to apex. First abdominal ventrite with lamelliform intercoxal process; mandibles crossed at tips.

Literature