Liang Feiyang, Dai Yuting, Yue Lu, Li Fasheng, Liu Xingyue
Department of Entomology, China Agricultural University, Beijing 100193, China; Email: unknown.
Zootaxa. 2015 Dec 10;4057(2):191-209. doi: 10.11646/zootaxa.4057.2.2.
The barklouse genus Stenopsocus Hagen is the most diverse group of the family Stenopsocidae, with 139 described species recorded from China in a previous study. However, due to the considerably similar morphology, species identification in this genus is problematic. In the present study, we used DNA barcoding to delimit the six Stenopsocus species currently recorded in Taiwan. Our results show that S. aphidiformis, S. niger, S. tibialis, S. makii, and S. formosanus can be clearly distinguished based on COI sequences. Although genetic divergence between S. formosanus and S. externus was not detected, we tentatively consider that these two species are valid based on their remarkably different morphological features. Re-descriptions of these six valid species are provided. Stenopsocus niger is newly recorded from Taiwan, and S. formosanus newly recorded from Vietnam.
啮虱属（Stenopsocus Hagen）是啮虱科中物种最为多样的类群，先前的一项研究记录了中国境内的139种已描述物种。然而，由于该属物种的形态极为相似，其物种鉴定存在问题。在本研究中，我们利用DNA条形码技术对目前记录于台湾的六种啮虱属物种进行界定。我们的结果表明，基于细胞色素氧化酶亚基I（COI）序列，可以清晰区分蚜虫形啮虱（S. aphidiformis）、黑色啮虱（S. niger）、胫啮虱（S. tibialis）、牧野啮虱（S. makii）和台湾啮虱（S. formosanus）。尽管未检测到台湾啮虱和外啮虱（S. externus）之间的遗传差异，但基于它们显著不同的形态特征，我们暂时认为这两个物种是有效的。本文提供了这六个有效物种的重新描述。黑色啮虱为台湾新记录物种，台湾啮虱为越南新记录物种。
