青海毛蠓属一新种记述及三种主要蠓虫日活动节律的初步观察(双翅目:蠓科)

Description of a New Species of the Genus Dasyhelea and Observations on Day Action Rhythm of Three Chief Species of Midges (Diptera: Ceratopogonidae) in Qinghai Province, China

描述了采自青海省共和县江西沟青海湖岸边毛蠓属 Dasyhelea 1 新种:青海毛蠓 Dasyhelea qinghaiensis Liu et Shi, sp. nov.,并初步观察了青海毛蠓 Dasyheleaqinghaiensis Liu et Shi, sp. nov.、格尔木细蠓 Leptoconops (Holoconops) germuensis Liu etYu 和原野库蠓 Culicoides homotomus Kieffer 的一日飞舞活动规律。模式标本保存于中国医学昆虫标本馆和兰州军区军事医学研究所标本室。

In this paper, one new species of Dasyhelea and observations on the bionomics of Desyhelea qinghaiensis Liu et Shi, sp. nov., Leptoconops (Holoconops) germuensis Liu et Yu and Culicoides homotomus Kieffer, from Gonghe county, Jiangxigou area (the bank in Qinghai lake, 3 120 m), Qinghai province, China. The holotype and paratype specimens are deposited in the Medical Entomology Collection Gallery, Academy of Military Medical Sciences, Beijing, China. The other paratype specimens are deposited in the Institute of Military Medical Sciences, Lanzhou Military Command, Gansu Province, China. 1. Dasyhelea qinghaiensis Liu et Shi, sp. nov. (Figs. 1~4) Female: Wing length 0.96 mm, breadth 0.41 mm. Antennal ratio (AR) 0.71, Porboscis longer than height of head (P/h) 2.0. The head as Fig.1 There are 5 metatibial distae bristles and 13 metatibial comb. Tarsi ratio (TR): Fore leg 2.2; middle leg 2.6; hind leg 2.2. The genitalia as Fig. 2 The spermatheca small and with short neck. Male: Wing length 126 mm, breadth 40 mm. Antennal ratio (AR) 1.13. Tarsi ratio (TR): Fore leg 2.2; middle leg 2.9; hind leg 2.1. The genitalia as Figs.3~4. This new species somewhat resembles Dasyhelea micotheca Yu, but differs from the latter in the characters of ♂ aedeagus and paramere, and ♀ the spermatheca in the genitalia as Figs.2~4. Holotype: ♀, Paratypes: 2♂♂, Gonghe county, Jiangxigou area (the bank in Qinghai lake, 3 120m), Qinghai Province, 02-Ⅶ-2003, coll. LIU Zeng-jia, SHI Shu-zhen and GONG Zhan-wei; Paratype 1♀, collecting data as holotype, 30-Ⅵ-2003, coll. ZHANG Ji-jun. The day action rhythm on 3 chief species of midges is observed.