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

L. Watson and M.J. Dallwitz

Rhyacia Hübner

Adults. Head rough. Face without any conspicuous prominence. Eyes glabrous; not ciliated. Antennae of males bipectinate.

Wingspan 41–46 mm. Forewings greyish brown; neither purplish nor rosy marked or tinged; complexly patterned (complexly patterned); the patterning well marked to obscure; reniform defined; orbicular defined. Hindwings fuscous; plain; with a clear discal mark; without transverse lines; exhibiting vein 5. Vein 5 of the hindwings strong (distally); arising nearer to vein 6 than to vein 4. Thorax crested (front and rear). Middle tibiae with spines. Posterior tibiae with spines. Abdomen not crested.

Living adults found in July.

Larvae, pupae. Larvae feeding on Dicot weeds and grasses.

British representation. 2 species (one adventive); South-east England, Central-southern England, South-west England, English Midlands, Northern England, Southern Scotland, Northern Scotland, Wales, and Ireland; lucipeta*, simulans (Dotted Rustic).

Noctuinae.

Illustrations. • Noctuinae: R. simulans (Dotted Rustic), and related genera: Newman. 1, Actinotia polyodon (The Purple Cloud); 2, Axylia putris (The Flame); 3, RHYACIA simulans (Dotted Rustic); 4, Eugnorisma glareosa (Autumnal Rustic); 5, Paradiarsia (Protolampra) sobrina (Cousin German); 6, Lycophotia porphyrea (True Lovers' Knot); 7, Ochropleura praecox (Portland Moth); 8, Ochropleura fennica (Eversmann’s Rustic); 9, Eugnorisma depuncta (Plain Clay); 10(a) and (b), Standfussiana lucernea (Northern Rustic); 11, Ochropleura flammatra (The Black Collar); 12, Ochropleura plecta (Flame Shoulder); 13, Eugraphe subrosea (Rosy Marsh Moth); 14, Spaelotis ravida (Stout Dart); 15, Graphiphora augur (Double Dart). From Newman (1869).


We advise against extracting comparative information from the descriptions. This is much more easily achieved using the DELTA data files or the interactive key, which allows access to the character list, illustrations, 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. See also Guidelines for using data taken from Web publications.


Cite this publication as: ‘Watson, L., and Dallwitz, M.J. 2003 onwards. Insects of Britain and Ireland: the genera of Lepidoptera-Noctuidae. Version: 14th February 2021. delta-intkey.com’.

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