Biston melacron
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Ordo: Lepidoptera
Familia: Geometridae
Genus: Biston
Name
Biston melacron Wehrli, 1941 – Wikispecies link – Pensoft Profile
- Biston melacron Wehrli, 1941[1], in Seitz, Gross-Schmett. Erde, 4 (Suppl.): 430, pl. 35: h. Syntypes 3♂, China: West Tien-Mu-shan, 1600 m. (ZFMK)
- Biston exotica Inoue, 1977[2], Bull. Fac. domestic Sci., Otsuma Woman‘s Univ., 13: 322, figs 65–67. Holotype ♂, Japan: Kochi Prefecture, Kubokawa. (BMNH) (Synonymized by Heppner and Inoue (1992)[3])
Diagnosis
The external characters of this species are close to those of Biston marginata as follows: the male antennae are partially bipectinate and filiform at tip; the forewing postmedial line bilobedly protrudes between M1 and M3, and slightly protrudes outwards between CuA2 and 1A + 2A. But it can be distinguished from Biston marginata by the following characters: the hindwing outer margin is concave between M1 and M3, whereas it is evenly round in Biston marginata; the transverse lines are black but dark brown in Biston marginata; the hindwing postmedial line is waved after M3, but straight in Biston marginata; the transverse lines on the underside of the wings are more conspicuous. The most distinct differences are in the male genitalia: the apex of the uncus is broader and bifurcated, whereas it is narrower and round in Biston marginata; the median process of the gnathos is broader and round terminally, while in Biston marginata, it is slenderer and acute apically; the setose area of the valva is much weaker; the juxta is narrower, and sharply pointed apically, while in Biston marginata, it is broader and round apically; the cornutus is shortly digitiform, but is thornlike in Biston marginata. In the female genitalia (Inoue 1977[2]), the signum is much longer than in Biston marginata.
Material examineds
CHINA, Chekiang [Zhejiang] (ZFMK): West Tien-Mu-shan, 1600 m, 27–29.IV.1932, coll. H. Höne, 3♂ (Syntypes); same data, 25.IV.1932, 1♂; same data, 25.V.1932, 1♂; same locality, 400 m, IV.1936, 1♂. Fukien [Fujian] (ZFMK):Kuatun, 2300 m, 3–7.IV.1938, 11.IV.1946, coll. J. Klapperich, 1♂. Formosa [Taiwan] (ZFMK): Puli, IV.1958, coll. ZSM, 1♂. Sichuan (IZCAS): Mt. Emei, Qingyinge, 800–1000 m, 17.IV–1.V.1957, coll. Zhu Fuxing & Huang Keren, 8♂.
Distribution
China (Zhejiang, Jiangxi, Fujian, Taiwan, Sichuan), Japan, South Korea.
Taxon Treatment
- Jiang, N; Xue, D; Han, H; 2011: A review of Biston Leach, 1815 (Lepidoptera, Geometridae, Ennominae) from China, with description of one new species ZooKeys, 139: 45-96. doi
Other References
- ↑ Wehrli E (1938–1954) Subfamilie: Geometrinae. In: Seitz A (Ed) Die Grossschmetterlinge der Erde. Vol. 4 (Supplement), Verlag A. Kernen, Stuttgart, 254–766, taf. 19–53.
- ↑ 2.0 2.1 Inoue H (1977) Catalogue of the Geometridae of Japan (Lepidoptera). Bulletin of Faculty of Domestic Sciences, Otsuma Women’s University 13: 227-346.
- ↑ Heppner J, Inoue H (1992) Lepidoptera of Taiwan. Vol. 1, Part 2: checklist, Gainesville, Florida, 276 pp.
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