Euxoa cursoria

Last updated

Coast dart
Euxoa cursoria f.jpg
female
Euxoa cursoria m.jpg
male
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
Superfamily: Noctuoidea
Family: Noctuidae
Genus: Euxoa
Species:
E. cursoria
Binomial name
Euxoa cursoria
Hufnagel, 1766
Synonyms
  • Phalaena cursoria
  • Euxoa wirima

Euxoa cursoria, the coast dart, is a moth of the family Noctuidae. It is found in northern and central Europe as well as the coastal regions of the British Isles, central Siberia, Mongolia, Tibet and Afghanistan. The subspecies Euxoa cursoria wirima is found in Canada.

Contents

Technical description and variation

Euxoa cursoria set specimen Euxoa cursoria.jpg
Euxoa cursoria set specimen

Forewing sandy ochreous, often much suffused and speckled with brownish grey; claviform stigma absent, or with dark outline only; orbicular and reniform with dark centres and pale rings, the lower lobe of reniform always deeper; sometimes the cell, the claviform, and a basal streak before it are dark olive brown; hindwing dull greyish ochreous with fuscous termen and pale cilia; a variable insect ab. obscura Stgr. has the forewings almost wholly red-brown, the stigmata with white rings, and occurs on the shores of the Baltic; -ab. currens Stgr. has both wings dark; — while ab.vaga Stgr. is uniform brownish grey; - lastly, ab. sagittata Stgr. is a more variegated form, with red-brown suffusion and little dusting, and the costal streak, the upper stigmata, and the postmedian area whitish; the three last are Central Asian; specimens from Asia Minor have the hindwings wholly white. [1] Euxoa cursoria is difficult to certainly distinguish from its congeners. See Townsend et al. [2]

Figs 7, 7a, 7b, 7c larva after last moult Buckler W The larvae of the British butterflies and moths PlateLXXI.jpg
Figs 7, 7a, 7b, 7c larva after last moult

Biology

This moth flies from July to September depending on the location.

Larva pale ochreous tinged with greenish; the lines paler, edgedwith grey-green; the head pale ochreous. The larvae feed on various sandhill plants, including Honckenya peploides and Elytrigia juncea , as well as Elymus arenarius , Rumex , Atriplex littoralis , Minuartia pebloides , Cakile maritima , Lathyrus maritimus and Asparagus . . [3]

Subspecies

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References

  1. Seitz, A. Ed., 1914 Die Großschmetterlinge der Erde, Verlag Alfred Kernen, Stuttgart Band 3: Abt. 1, Die Großschmetterlinge des palaearktischen Faunengebietes, Die palaearktischen eulenartigen Nachtfalter, 1914
  2. Martin C. Townsend, Jon Clifton and Brian Goodey (2010). British and Irish Moths: An Illustrated Guide to Selected Difficult Species. (covering the use of genitalia characters and other features) Butterfly Conservation.
  3. "Robinson, G. S., P. R. Ackery, I. J. Kitching, G. W. Beccaloni & L. M. Hernández, 2010. HOSTS - A Database of the World's Lepidopteran Hostplants. Natural History Museum, London".