|A BIT ABOUT BUGS
Cacopsylla is a large and difficult genus with genal cones and a pterostigma; many species cannot be reliably identified without examining the genitalia.
C. crataegi is among the most distinctive species, with (unique among UK species) dark spots of radular spinules in the apical cells, and smaller dark spots on vein apices. The colouring is initially as shown, darkening through the season to red, brown and plum with paler dorsal lines.
A scarce native species associated with Crataegus (Hawthorn), particularly C. oxycanthoides, and which is most common in southern England.
Adult: all year, overwintering on evergreens.
Length ~3.5 mm
|Adult female: Isle of Wight (July 2012) ©Ian Boyd