A widespread species found in water bodies fouled by animals (cattle, birds etc), including sewage tanks and brackish ponds and ditches. It flies readily, often taken a light traps, and rapidly colonises new localities. Overwintered adults lay eggs in March and April on submerged plant stems and the new generation of adults matures by July. This gives rise to at least one and possibly two further generations before the winter. Although a pale species, it is usually found on dark backgrounds. When stressed the bugs can leave the water by flying almost vertically from the surface.
The map is based on records from NBN Gateway, with yellow dots showing pre 1990 records, reds dots 1990 – 2015 records and red on yellow dots overlapping records. There are scattered records for the species in north-east and southern Ireland
Sigara lateralis is one of the smaller species of lesser water boatman (5.0 – 6.5 mm), and the only species of the genus to have an entirely dark posterior claw (see below).