Insects of Britain and Ireland: the families of Hemiptera
Salient features of adults. Terrestrial.
Phytophagous (tapping phloem of Dicotyledons, commonly on Quercus and vines). Tiny; represented by both greatly reduced, sedentary forms and normal, mobile insects; fliers and non-fliers (with complex life cycles up to 20 or more forms in some species); conspicuously stilt-legged to not stilt-legged. 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; (1–)3–6 segmented. Antennae of apterae 3 segmented. Antennae non-aristate. Fore-wings well developed, or vestigial or absent; in the resting insect when macropterous, lying more or less flat over the abdomen; when present, more or less uniform in texture; with transparent cells; 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) of similar consistency, transparent.
Taxonomy. Suborder Homoptera. Sternorrhyncha. Adelgoidea.
British representation. 5 species in Britain; genera 3. Phylloxera, Phylloxerina, Viteus. E.g., Phylloxera vastatrix (= P. vitifoliae).
Comments. Including Viteus vitifolii, the notorious pest of vines.
Illustrations. • Viteus vitifolii.
To view the illustrations with detailed captions, go to the interactive key. This also offers full and partial descriptions, diagnostic descriptions, differences and similarities between taxa, lists of taxa exhibiting or lacking specified attributes, and distributions of character states within any set of taxa.
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. delta-intkey.com’.