The genus Leptoglossus contains over 40 species, of which 10 are regarded as economically damaging species. One of these economically important species is Leptoglossus occidentalis.
The genus is characterised by a number of features:
In North America Leptoglossus occidentalis looks very similar to Leptoglossus corculus and may be distinguished by examining the expansions on the hind-legs and the colouration of the body segments.
In the UK Leptoglossus occidentalis is easily recognisable because none of our native coreids look like it.