Helotropha leucostigma

Helotropha leucostigma
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Lepidoptera
Superfamily:	Noctuoidea
Family:	Noctuidae
Genus:	Helotropha
Species:	H. leucostigma
Binomial name
	Helotropha leucostigma; (Hübner, 1808)
Synonyms
	Noctua leucostigma; Noctua fibrosa; Noctua lunina; Cerastis laevis; Gortyna leucostigma; Blepharidia yeterofuna; Celaena leucostigma;

Last updated December 07, 2023

Helotropha leucostigma, the crescent, formerly Celaena leucostigma is a moth of the family Noctuidae. It is found in the Palearctic realm (Europe, Russia,^[1] Armenia, Turkestan, Siberia, Russian Far East, Mongolia, Amur, Korea, Japan, and northeastern China).

Technical description and variation

The wingspan is 37–44 millimetres (1.5–1.7 in). Forewing dull dark brown, faintly reddish- tinged; the veins powdered with grey scales; the terminal area beyond subterminal line black-brown, except at apex: median area between subcostal vein and vein 1 somewhat darker than the rest of wing; inner and outer lines indistinctly double: the inner outwardly oblique, the outer bent on vein 5; claviform stigma hardly visible; orbicular stigma oblique, elliptical, of the ground colour, with paler annulus; the reniform white or dull yellow, containing a double dark lunule with pale centre; the outer edge of this dark inner lunule is sometimes obsolete, in which case the stigma appears more solidly yellowish or white; the space between outer and subterminal lines is always slightly, often visibly, paler than the ground colour; hindwing fuscous grey; — in the ab. lunina Haw. the outer fascia is conspicuously paler, becoming pale brown or pinkish ochreous, the median vein and veins 3, 4 at their base are white, and both stigmata are more strongly marked; ab. albipuncta Tutt is comparatively a rare form, with nearly the whole reniform stigma snow-white; — fibrosa Hbn. represents a bright reddish fulvous form, which may exist, but which no one appears to have seen; — laevis Btlr. the Japanese form, is, as usual, larger than the European, and the outer line appears rather more strongly excurved beyond cell and incurved below.^[2]

Biology

The moth flies from June to October depending on location.

Larva blackish-brown; the dorsal and subdorsal lines somewhat paler; thoracic and anal plates blackish; head brown. The larvae feed on waterplants Iris pseudacorus and Cladium mariscus .^[3]

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References

↑ "Helotropha leucostigma (Hübner, 1808)". Fauna Europaea . 2.6.2. August 29, 2013. Archived from the original on October 21, 2014. Retrieved January 5, 2014.
↑ 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
↑ "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".

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[1] "Helotropha leucostigma (Hübner, 1808)". Fauna Europaea . 2.6.2. August 29, 2013. Archived from the original on October 21, 2014. Retrieved January 5, 2014.

[2] 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

[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".

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