青海祁连山区寄蝇科昆虫资源调查

Tachinidae(Insecta:Diptera)from the Qilian Mountains of Qinghai,China

【目的】掌握我国祁连山国家公园青海片区寄蝇科昆虫资源,明确青海祁连山区寄蝇科昆虫种类和区系分布格局。【方法】于2019-2021年,采用网捕法对寄蝇科昆虫进行采集,用比较形态法进行标本观察分类,进一步对青海祁连山区寄蝇科昆虫资源进行整合。【结果】共调查分类鉴定出寄蝇科昆虫109种,隶属于4亚科15族54属,包含1个中国新记录属:马寄蝇属Masistylum Brauer&Bergenstamm,1893,2个中国新记录种:弓马寄蝇Masistylumarcuatum(Mik,1864)、黄缟寄蝇Onychogoniaflaviceps(Zetterstedt,1838);54个种为青海新记录种;7个种为祁连山区优势种。区系分布格局显示,古北界+东洋界共有种与古北界特有种比例较高。【结论】青海祁连山国家公园的寄蝇科昆虫种类丰富,以植食性鳞翅目昆虫为宿主的寄蝇优势种明显,祁连山区寄蝇物种区系分布格局呈现出古北动物地理界青藏区的物种组成特征。

[Aim]To describe members of the Tachinidae(Insecta:Diptera)found in the Qilian Mountains National Park(QLM)and clarify the distribution pattern of this family in this region.[Methods]Specimens were collected using net catching between 2019 and 2021 and classified using comparative morphological methods.[Results]A total of 109 species from 54 genera,15 tribes and 4 subfamilies were identified,including one newly recorded genus for China;Masistylum Brauer&Bergenstamm,1893,and two newly recorded species for China,Masistylum arcuatum(Mik,1864)and Onychogonia flaviceps(Zetterstedt,1838).A total of 54 of the species identified were new records for Qinghai Province.Seven species were dominant in the area.The faunal distribution pattern shows that common Palaearctic and Oriental species were more abundant than endemic species in the Palaearctic region.[Conclusion]Species of the Tachinidae are abundant in the Qinghai District of Qilian Mountain National Park.Dominant species that parasitize herbivorous Lepidopteran larvae are the most obvious.The faunal distribution pattern is basically consistent with the species composition characteristics of the Qinghai-Tibet Plateau region,which is part of the Palaearctic region.