Dendrobias

Frons vertical, gradually inclined backward toward clypeus, rugose, distinctly depressed compared with area under antennal tubercles. Vertex depressed from antennal tubercles to after eyes, divided into two isolated areas by median groove and elevated area centrally between upper eye lobes; depressed area finely, sparsely punctate between antennal tubercles, nearly smooth on remaining surface. Antennal tubercles triangularly elevated toward upper eye lobes, with blunt apex, finely, abundantly punctate except smooth narrow distal area. Median groove distinct from clypeus to between upper eye lobes. Distance between upper eye lobes 0.56 times length of scape; ventrally, distance between lower eye lobes 1.46 times length of scape. Antennae 2.65 times elytral length, reaching elytral apex near apex of antennomere VII; antennomere III gradually widened toward apex, slightly flattened from middle, with minute, abundant asperities throughout except on smooth apex forming nearly acute angle at outer side; antennomeres IV–VIII cylindrical at basal 3/4, slightly widened at distal quarter, with outer angle forming acute angle. Pronotum with basal sulcus well-marked (less so centrally). Sexual punctation on prosternum distinct on basal 2/3 except smooth central area. Central area of metaventrite with long, erect, sparse pale-yellow setae. Elytra with same color variation as in male or entirely black. Ventrites I–IV with short pale-yellow pubescence, denser laterally.

Literature