Belousov Igor A, Kabak Ilya I
All-Russian Institute of Plant Protection, Podbelskogo 3, St. Petersburg-Pushkin, 196608, Russia.
Zootaxa. 2020 Jun 4;4786(4):zootaxa.4786.4.1. doi: 10.11646/zootaxa.4786.4.1.
The main goal of the present paper is to define the kozlovi-species group of the genus Trechus Clairville, 1806, one of the most species-rich groups of Chinese Trechus and to describe new species of this group from two neighboring areas in Sichuan Province. Description of species groups for Chinese Trechus is a way to get a more consistent view of the taxonomy of this extremely diverse genus. The kozlovi group includes many described species, which are widespread in Qinghai, Gansu and Sichuan provinces. In turn, the group can be split into several subgroups each embracing close allopatric relatives but much more material from various areas of China is required for such detailed classification. In the present work, we describe 9 new Trechus species belonging to this group, all collected in central and southern Sichuan, China: T. suopoensis sp. n. and T. gemaensis sp. n., both from the northern slopes of Mount Gema, E of Danba City, T. bianericus sp. n. and T. maoniu sp. n., both from the nortwestern slopes of the mountain massif located south of Bianer Village, WNW of Danba City, T. shangensis sp. n., T. mengensis sp. n., both from the upper valley of the small river located WSW of the village of Shangmeng, NW of Lixian City, T. cuspis sp. n. from the southern slope of Mount "5200" NW of Lixian City, three latter species from the left bank of the Zagunao River, T. qunlaishanicus sp. n. from the Qunlaishan mountains on the right bank of the Zagunao River and T. chiguguanensis sp.n. from the Chiguguan Pass.
本文的主要目标是界定1806年克莱尔维尔所命名的Trechus属中的科兹洛夫种组，它是中国Trechus属中物种最为丰富的类群之一，并描述来自四川省两个相邻地区的该类群新物种。对中国Trechus属物种组进行描述，是一种更全面地了解这个极其多样的属的分类学的方法。科兹洛夫种组包括许多已描述的物种，广泛分布于青海、甘肃和四川省。反过来，该种组又可细分为几个亚组，每个亚组包含亲缘关系密切的异域近缘种，但要进行如此详细的分类，还需要来自中国不同地区的更多标本。在本研究中，我们描述了属于该种组的9个Trechus属新物种，均采自中国四川省中部和南部：梭坡Trechus（新种）和格玛Trechus（新种），均采自丹巴县城以东格玛山北坡；边耳Trechus（新种）和牦牛Trechus（新种），均采自丹巴县城西北偏西的边耳村以南山体的西北坡；上孟Trechus（新种）和梦笔Trechus（新种），均采自理县县城西北上孟村西南偏西的小河上游谷地；尖突Trechus（新种）采自理县县城西北“5200”山的南坡，后三个物种采自杂谷脑河左岸；邛崃山Trechus（新种）采自杂谷脑河右岸的邛崃山；赤古关Trechus（新种）采自赤古关。
