Theobaldia annulata

This is one of two species of mosquito that often occur indoors. It breeds in small bodies of water, and the larva can tolerate water that is somewhat polluted. In fact the larval stages are frequently found in garden ponds, water storage tanks and even in rain butts and blocked gutters. There are several generations in the course of the summer and in autumn the mated females may enter cellars and outhouses to spend the winter.