Plesiocoris rugicollis Fallen Apple capsid

Nowadays, this locally distributed capsid is a relatively minor pest of apple. Leaves and shoots are punctured, and tissue becomes distorted and marked with necrotic spots. Attacked fruitlets develop corky scars and may drop prematurely. Apple capsid will also damage the foliage of currant and gooseberry bushes.

BIOLOGY

Adults are active in late June and July, when eggs are laid in the bark of apple trees. The eggs hatch in the following spring. The very active nymphs then attack the foliage and blossom trusses. Developing fruitlets are also attacked. Maturity is reached after five nymphal stages, there being just one generation annually.

DESCRIPTION

Adult 5.5-6.8 mm long, mainly green; legs yellow; elytra often with a yellow margin; pronotum with distinct callosities (cf. common green capsid, Lygocoris pabulinus, p. 97). Nymph yellowish-green; antennae tipped with reddish-brown.

Family CERCOPIDAE (froghoppers)

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