Blomer's rivulet (Venusia blomeri) is a species of the family Geometridae of moths, in the subfamily Larentiinae which includes the carpet moth and pugs. Like most geometers the moth rests with its wings open and this reveals its main distinguishing feature — a rusty-brown patch covering the apex of the upper surface of the forewing, which contrasts with the pale grey colour of the rest of the wings. When seen up close there are faint blackish cross lines too.The egg is yellow, small, angular, flat and has diamond-shaped depressions. The caterpillar is yellowish or light green coloured. The head, a thoracic segment and the penultimate segment are strikingly reddish-brown. The pupahas curved hooks on the cremaster.