British Insects: Pug moths (Lepidoptera-Geometridae)


L. Watson and M. J. Dallwitz

Chloroclystis v-ata (Haworth)

C. coronata Hübner.

The V-pug.

Adults. Posterior tibiae of males 4-spurred. Wingspan 18–22 mm. Forewings not noticeably elongate; the outer margin convexly curved; the costa more or less straight; apically blunt to somewhat pointed.

Forewings relatively conspicuously patterned; dull green to yellowish green, striated darker, second fascia blackish on the dorsum, the median band anteriorly angulated and partially blackish, posteriorly blacker on the upper half and twice angulated resulting in the characteristic black ‘V’. Forewings with a dark discal mark (but this somewhat obscured by costal darkening of the median band in its vicinity). The discal mark shortly elongate to dot-like. Forewing fringes somewhat chequered.

Hindwings pale grey with obscure to conspicuous darker striae; less conspicuously patterned than the forewings; conspicuously patterned to rather plain; faintly to fairly conspicuously transversely striated (at least dosally and postmedianly); without a clear discal mark; the fringes conspicuously chequered to not conspicuously chequered.

The abdomen conspicuously patterned; with black basal and sub-basal bands.

Neuration. Vein 10 of the forewings arising out of 11 and anastomosing with 9 to form a simple areole.

Genitalia. The male abdominal plate in the form of a single sclerotized patch with a pair of apical extensions. The bursa copulatrix with ornamentation conspicuously restricted in distribution (being proximally and dorsally only very finely scobinate to smooth); only inconspicuously spiny to without spines (with few real spines).

Early stages, ecology. Botanically polyphagous. Foodplants woody-dicotyledonous and herbaceous-dicotyledonous; Compositae (Asteraceae), Hypericaceae, Primulaceae, Ranunculaceae, Rosaceae, and Umbelliferae (Apiaceae). The larvae found on Clematis, Crataegus, Lysimachia, Hypericum, Solidago, Artemisa, Eupatorium, Achillea, etc.; feeding on flowers.

Months of appearance, distribution. Adults abroad June and July (in the north), or April to August (in the south); larvae found May to October (in two overlapping generations). South-east England, Central-southern England, South-west England, English Midlands, Northern England, Southern Scotland, Wales, and Ireland.

Special key characters. Forewings yellowish, or green or greenish when fresh; green, or greenish. Hindwings pale grey.

Illustrations. • Chloroclystis v-ata and Pasiphila debiliata (Bilberry Pug), with their larvae: Barrett. • C. v-ata (V-Pug), with Pasiphila debiliata and P. rectangulata: South. • Chloroclystis v-ata, with Anticollix, Gymnoscelis and Pasiphila: Hubner 1809–1817. • C. v-ata (V-pug), with Pasiphila debiliata and P. rectangulata: Swain. • C. v-ata (V-pug), with other Pugs: Newman.

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. British insects: Pug moths (Lepidoptera-Geometridae). Version: 29th December 2011.’.