Insects of Britain and Ireland: the genera of Lepidoptera-Noctuidae

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L. Watson and M. J. Dallwitz

Rivula Guenée in Duponchel

Adults. Head fairly smooth. Head with a frontal tuft (this slight), or without a frontal tuft. Eyes glabrous; not ciliated. Antennae of males ciliate. Labial palps medium to long; porrect.

Wingspan 19–25 mm. Thorax coloured like the forewings, the abdomen more like the hindwings. Forewings straw-coloured; patterned transversely; the patterning obscure (narrowly brown-margined, and very faintly twice-transversely lined); reniform defined (brown); orbicular undefined; claviform undefined. Hindwings whitish-fuscous and yellowish (tinged); plain; without a clear discal mark; transversely lined to without transverse lines (no more than faintly so); exhibiting vein 5. Vein 5 of the hindwings strong; arising nearer to vein 4 than to vein 6; convergent on vein 4 near their bases. Thorax not crested. The males not fan-footed. Middle tibiae without spines. Posterior tibiae with spines; with appressed scales. Abdomen not crested.

Living adults found June and July.

Larvae, pupae. Larvae feeding on grasses; pupating on vegetative parts of the foodplant (drawing together the edges of a leaf blade).

British representation. 1 species; South-east England, Central-southern England, South-west England, English Midlands, Northern England, Southern Scotland, Wales, and Ireland; sericealis (Straw Dot).


Illustrations. • R. sericealis (Straw Dot) and other Ophiderinae.

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 genera of Lepidoptera-Noctuidae. Version: 8th June 2016.’.