The fast-running flies (Diptera, Hybotidae, Tachydromiinae) of Singapore and adjacent regions Author Grootaert, Patrick Author Shamshev, Igor V. text European Journal of Taxonomy 2012 2012-01-06 5 1 162 journal article 10.5852/ejt.2012.5 e809cd3a-36bb-413d-9f19-70837d7db34b 3715167 B69F002A-C1A0-439D-9477-62BFA87DEAD7 Chersodromia obscura Grootaert, Cumming & Shamshev, 2007 Figs 41-43 Chersodromia obscura Grootaert, Cumming & Shamshev, 2007: 59 . Diagnosis Pale yellow species belonging to the C. flavicaput group. Occiput dark yellowish in ground-colour. One pair of distinct vertical bristles. No acrostichals. Hind tibia with only 3 long bristles on apical half. Distribution Thailand . Habitat and seasonal occurrence River banks in bamboo forest, April. Remarks Chersodromia obscura differs from C. flavicaput in having only 3 long bristles on the hind tibia while the latter has 5 bristles. In addition C. obscura has a pair of distinct vertical bristles, no acrostichals, stronger male cerci, longer spines on left surstylus, and tip of phallus is less coiled.