Idiocnemis obliterata

Male : Idiocnemis obliterata is a dark species of the bidentata-group with a black dorsum and contrasting pale/pruinose thoracic markings. The synthorax has complete brown antehumeral stripes and a characteristic wave-like metepisternal stripe. The abdomen is mostly dark, with blue on the posterior part of segment 8 and the dorsum of segment 9. The male superior anal appendages are nearly straight basally, then bent inward and downward apically, with a small basal spine and a thumb-shaped process about midway along the appendage. Female : The female has a darker head, with brown-black labrum, black clypeus, and conspicuous turquoise postocellar spots. The posterior pronotal lobe is diagnostic, with its lateral edges produced into elongate acute triangular projections. The synthorax has grey antehumeral stripes, but lacks the clearly wave-like mesepimeral stripe seen in the male. The abdomen bears pale markings on segments 1–5 and paired crescent-shaped yellowish markings on segments 8–9.