Hesperocorixa sahlbergi

7 to 8 mm with seven to nine pale lines on the pronotum. The pattern of light lines on a dark background fades to a pale patch near the apex of the corium.

Hesperocorixa linnaei

Unless identified by a recognised expert, photos of the dorsal and ventral surfaces are required and the specimen should be examined with a microscope. In the comments box, state the key or ID method used.  Please measure length and record dorsal patterning.

Occurs in a range of still-water habitats, usually with emergent vegetation and a fairly high concentration of organic matter in solution.

All year.

Overwinters as an adult.

Widespread and common in Britain.

Status in Leicestershire and Rutland not known.