Insects of Britain and Ireland: the families of Hemiptera

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L. Watson and M. J. Dallwitz


~ Phylloxeridae. Chermesidae.

Salient features of adults. Terrestrial.

Phytophagous (confined to conifers, forming galls). Small (?); fliers and non-fliers. Head plus thorax of apterae greater in volume than the abdomen. Rostrum ostensibly originating between the front legs; not separated from the prosternum by a gula. Antennae longer than the head, readily visible from above; 3 segmented. Antennae of apterae 3 segmented. Antennae non-aristate. Fore-wings well developed, or vestigial or absent; in the resting insect sloping roof-like over the abdomen; when macropterous, more or less uniform in texture; when present, without costal fracture and cuneus; without a clavus; with three oblique veins. Tarsi 2 segmented; two-clawed. The abdomen without secretory ‘cornicles’.

Fore- and hind-wings when present clear and of similar texture, but the fore-wings larger; all the fore-wing longitudinal veins originating from a single straight one close to the front edge. Apterous females covered with flocculent wax.

Taxonomy. Suborder Homoptera. Sternorrhyncha. Adelgoidea.

British representation. 10 species in Britain; genera 2. Adelges, Pineus.

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Cite this publication as: ‘Watson, L., and Dallwitz, M.J. 2003 onwards. Insects of Britain and Ireland: the families of Hemiptera. Version: 16th May 2016.’.