About Venusia blomeri (Curtis, 1832)
Blomer's rivulet, known scientifically as Venusia blomeri, is a moth species belonging to the family Geometridae, subfamily Larentiinae. This subfamily also contains carpet moths and pug moths. Like most other geometer moths, Blomer's rivulet rests with its wings held open. This resting posture exposes the species' main distinguishing feature: a rusty-brown patch that covers the apex of the upper forewing surface. This patch contrasts sharply with the pale grey color of the rest of the moth's wings. When viewed up close, faint blackish cross lines are also visible on the wings. Blomer's rivulet's eggs are small, yellow, angular, and flat, with diamond-shaped depressions on the surface. The caterpillar is yellowish or light green overall, with a distinctly reddish-brown head, one thoracic segment, and the penultimate body segment. The pupa of this species has curved hooks on its cremaster. Blomer's rivulet has a broad global distribution. It ranges from France, Britain, and Scandinavia, through eastern Europe and Russia, all the way to China and Japan.
