Cnaphalocrocis exigua Butler
- Family: Crambidae
- Subfamily: Spilomelinae
- Genus: Cnaphalocrocis
- Distribution: India, Bangladesh, Brunei, Sabah, Kalimantan Berat, Sumatra, PNG, Australia, Solomon Is., Philippines, China, Japan.
- Habitat: Lowland, rice crops, mangrove, scrub.
- Wing Length: 6mm
Taxonomy
The holotype of Samea exigua Butler, 1879: 453 from Japan is in the BMNH.
- syn. Cnaphalocrocis sanitalis Snellen, [1882] (1880-1892): 65. TL Sumatra. The male type is in Leiden.
It is the TS of Susumia Marumo 1930 (n.n.f. Marasmia Lederer, 1863a: 277). Comb. n. to Marasmia (Inoue, 1982). (Inoue 1982 1: 334, 2:232, 453).
As Cnaphalocrocis in LepIndex but Globiz still treats most Cnaphalocrocis as Marasmia despite Lewvanich (1990: 553) and Shaffer et al. (1996).
Description
This sp. is less yellow and a paler brown than many Cnaphalocrocis spp. The FW submarginal white area and the adjacent distal postmedian pale patch is fairly distinctive.The FW is slightly pointed.
Life History
The three spp, Cnaphalocrocis exigua, C. medinalis, and C. patnalis, have attained pest status on Oryza sativa (Rice); these are serious pests (Pathak et al., 1994).
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References
- Snellen, P.C.T., ([1880] 1880-1892). Achtse afdeeling. Lepidoptera door P.C.T. Snellen, met eene inleiding door Joh. F. Snelleman. In: Veth, P.J., (1880-1892). Natuurlijke Historie. Midden-Sumatra. 4 (8): 92 pp., 5 pl. Leiden. [in Dutch]
- Marumo, N. (1930) Lep. Suterella, Oyo-Dobuts Zasshi, [Tokyo] 2: 39, 41 Fig.
- Inoue, H. (1982) Pyralidae. In Inoue H., Sugi, S., Kuroko, H., Moriuti S. & Kawabe, A. (eds): Moths of Japan 1, 2; 307-404 pp. (Vol. 1), 223-254; pls 36-48, 228, 296-314 (Vol. 2) Kodansha, Tokyo. [in Japanese]
- Lewvanich, A. (1990) Proc. 7th Tech. Conf. Ent. Zool. Div. Dept. Agric. Bangkok, Thailand.
- Pathak, M.D., Zeyaur, R. & Khan, Z.R. (1994) Insect Pests of Rice, International Rice Research Institute, 89 pp..
- Shaffer, M., & Nielsen, E.S. & Horak, M. (1996) Pyraloidea (In Nielsen, E.S., Edwards, E.D. & Rangji (Eds.), Checklist of the Lepidoptera of Australia; 164-199, CSIRO, Australia.
- Lederer, J. (1863a [Aug]) Beitrag zur Kenntniss der Pyralidinen. Wien. entomol. Monat. 7 (8): 243-280, pl. 2-18.
- Butler, A.G. (1879b) LI Descriptions of new species of Lepidoptera from Japan. Ann. Mag. nat. Hist., Ser. 5., 4 (24): 437-457.