|
|
Validity of Ips chinensis Kurentzov & Kononov confirmed with DNA data |
Milos Kní?ek1, Anthony I. Cognato2 * |
1Forestry and Game Management Research Institute, Jílovi?tě, Czechia 2Department of Entomology, Michigan State University, USA |
|
|
Abstract Ips acuminatus has a Eurasian distribution and overlaps with Ips chinensis in southern China. These species are morphologically similar and taxonomic confusion is possible because of the lack of a recent systematic review of these species. Assembly of specimens throughout the ranges of these species allowed for the examination of species boundaries based on monophyly. A phylogeny was reconstructed with cytochrome oxidase I DNA sequences for 24 individuals plus three outgroups and morphological diagnostic characters typical for Ips species were reviewed. The strict consensus of 16 most parsimonious trees recovered I. acuminatus and I. chinensis reciprocally monophyletic with an above average pairwise sequence difference (9.6% compared to 6.1% for Ips sister species). These clades associated with diagnostic characters of elytral declivity, that is, the position of spine 2. Monophyly, nucleotide differences, and diagnostic characters support the validity of I. chinensis. In addition, high sequence divergence was observed between two clades of I. chinensis which corresponded to northern and southern populations however consistent morphological differences were not found for those clades.
|
|
Fund:Ministry of Agriculture of the Czech Republic – Resolution RO0116 (10462/2016-MZE-17011) to MK and NSF grants (DEB–0328920, DEB-1607201) to AIC, in part, supported this study. |
Corresponding Authors:
Anthony I. Cognato
E-mail: cognato@msu.edu
|
|
|
|
[1] |
Shuqiang Li, Xiaoxiao Wang. New cave-dwelling spiders of the family Dictynidae (Arachnida, Araneae) from Guangxi and Guizhou, China[J]. Zoological Systematics, 2017, 42(2): 125-228. |
[2] |
Lianggen Wang, Feiyan Du, Zhenzu Xu, Jiaqi Huang, Donghui Guo. Taxonomical notes on the family Ptilocodiidae (Anthomedusae) from the central and southern of South China Sea, with a new genus and a new species[J]. Zoological Systematics, 2017, 42(2): 236-242. |
[3] |
Weiwei Zhang, Wanzhi Cai, Wenzhu Li, Xingke Yang, Siqin Ge. A new species of Chresmodidae from mid-Cretaceous amber discovered in Myanmar[J]. Zoological Systematics, 2017, 42(2): 243-247. |
[4] |
Norman MacLeod. Morphometrics: History, development methods and prospects[J]. Zoological Systematics, 2017, 42(1): 4-33. |
[5] |
Ming Bai, Jing Li, Wencheng Wang, Rolf G. Beutel, Benjamin Wipfler, Wangang Liu, Sha Li, Mengna Zhang, Yuanyuan Lu, Xingke Yang. A web based tool to merge geometric morphometric data from multiple characters[J]. Zoological Systematics, 2017, 42(1): 34-45. |
[6] |
Jean-Pierre Dujardin, Sebastien Dujardin, Dramane Kaba, Soledad Santillán-Guayasamin, Anita G. Villacís, Sitha Piyaselakul, Suchada Sumruayphol, Yudthana Samung, Ronald Morales Vargas. The maximum likelihood identification method applied to insect morphometric data[J]. Zoological Systematics, 2017, 42(1): 46-58. |
|
|
|
|