摘要
环螽属Letana Walker,1869(=Pyrrhicia Stal,1873)迄今已知22种,分布中国、越南、泰国、缅甸、尼泊尔、印度和斯里兰卡等国。作者在整理这个属的标本时发现2新种和1新纪录种,分别采自中国(西藏)和尼泊尔,现记述于后。模式标本均保存在中国科学院上海昆虫研究所。
In this paper two new species and one new record of the genus Letana Walker, 1869 from China (Tibet) and Nepal (Simra) are described. All the type specimens are deposited in Shanghai Institute of Entomology, Academia Sinica.1. Letana sinumarginis, sp. nov. (Figs. 1-4)This new species is very similar to L. atomifera (Brunner, 1878). It differs from the latter by the femora armed with spines and fore wings shorter, in length cerci of male with internal carina longer than half the length of cercus (Fig. .4).Female unknown.Hologtype (?) , Nepal (Simra: Abhabhar), 26-Ⅷ-1967.2. Letana grandis, sp. nov. (Figs. 5-8)This new species is closely allied to L. magna Ingrisch, 1990 from Nepal, but it differs from the latter by the supra-anal plate of male with posterior margin protruded into two triangular lobes between lateral appendages (Fig. 7). Phallus sclerite short, compressed, dorsal margin with fine teeth (Fig. 8).Female unknown.Holotype (?) , Paratypes 3 (?) (?), China (Tibet: Medog), 7-14-Ⅵ-1980.3. Letana gracilis Ingrisch, 1990, New Record to ChinaMaterial studied: 4 (?) (?) , 2 (?) (?), China (Tibet: Medog), 31-Ⅶ - 17-Ⅻ-1979; India (Assam).
关键词
直翅目
环螽属
新种
新记录种
Orthoptera, Tettigonioidea, Phaneropteridae, Letana, taxonomy, China (Tibet), Nepal
