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Cacopsylla peregrina
Family: Psyllidae

Cacopsylla is a large and difficult genus with genal cones and a pterostigma; many species cannot be reliably identified without examining the genitalia.

A small psyllid that is difficult to distinguish from C. mali from the male genitalia. Both show a striking colour change from early to late summer. Initially yellow-green, late summer specimens tend to be chestnut-brown and black. The antennae are largely orange with black tips and apices to some other segments, and the the pterostigma is long. Veins pale, with the inner and posterior parts of the marginal vein often partly orange. Genal cones broad and rounded. Nymphs typically have a brown streak down the centre of each wing bud.
   
It is a very common species on hawthorn across the UK.


Length 3-4 mm
Adult: May to October
Psylla peregrina
Adult female: Huddersfield (May 2008) ©Joe Botting

Psylla peregrina face Psylla peregrina
Adult male: Huddersfield (August 2008) ©Joe Botting

Adult male: Huddersfield (August 2008) ©Joe Botting
Cacopsylla peregrina
Nymph: Huddersfield (April 2009) ©Joe Botting