Aulacophora abdominalis

Body yellow; antennae and abdomen dark, abdominal apex yellow. Head brownish-yellow, except apical half to two-thirds of labrum and apices of mandibles dark brown to black; eyes black; frontoclypeus without arcuate ridges or densely setose patches. First antennomere expanded, with oval flat area in apical half defined by sharp ridge; antennomere 2 shortest, less than one third length of 1; antennomere 1 longest; comparative lengths: 1>11>5=9>4=7=10>6=8>3>2; antennomeres 3–11 each with only 1–4 erect lateral setae. Pronotum glabrous, yellow; in lateral view anterior half slightly more convex than posterior half, median depression with anterior slope steeper than posterior slope. Elytral humeri with elongate oval patch of 30–100 erect setae. Scutellum pale. Abdominal tergites (except pygidium) dark; apex of abdominal venter pale. Pygidium angularly produced; venter of pygidial apex slightly concave, flat or medially convex. Apex of ventrite V shallowly to deeply but broadly concave, concavity usually asymmetric or with small median projection, depth:width ratio 1:1.8 or more. Tergite VIII entirely pale brown, bicornual with two prongs separated by deep U-shaped concavity; prongs usually elongate and narrow with upturned apices, left prong shorter and straighter than right. Sternite VIII with tignum separated from weakly sclerotised posterior margin by transparent membranous area; posterior margin truncate, not produced.

Literature