Three new species and one subspecies of the Amynthas corticis-group from Guangxi Zhuang Autonomous Region, China (Oligochaeta, Megascolecidae)

Three new species and one subspecies of the Amynthas corticis-group from Guangxi Zhuang Autonomous Region, China (Oligochaeta, Megascolecidae)

Three new species and one subspecies of the genus Amynthas are described from Guangxi Zhuang Autonomous Region, China: The new species are: Amynthas maximus Qiu & Dong, sp. nov . and Amynthas tortuosus Qiu & Dong, sp. nov. , and Amynthas shengtangmontis Dong & Jiang, sp. nov. , the subsp...

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Bibliographic Details
Published in:ZooKeys Vol. 884; pp. 23 - 42
Main Authors: Dong, Yan, Law, Michelle Man Suet, Jiang, Jibao B, Qiu, Jiangping P
Format: Journal Article
Language:English
Published: Sofia Pensoft Publishers 30-10-2019
Subjects:
Amynthas
Amynthas corticis
Annelida
Cenozoic
China
DNA barcoding
Invertebrata
Lumbriculida
Megascolecidae
New species
Physical characteristics
Systematics
Taxonomy
Zoology
China
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Summary:Three new species and one subspecies of the genus Amynthas are described from Guangxi Zhuang Autonomous Region, China: The new species are: Amynthas maximus Qiu & Dong, sp. nov . and Amynthas tortuosus Qiu & Dong, sp. nov. , and Amynthas shengtangmontis Dong & Jiang, sp. nov. , the subspecies is Amynthas shengtangmontis minusculus subsp. nov. All have four pairs of spermathecal pores in 5/6–8/9, which indicates that they should belong to the corticis -group. Their morphological characteristics are compared to other similar species in the corticis -group from China and other Asian countries, such as Amynthas pulvinus Sun & Jiang, 2013, Amynthas homosetus (Chen, 1938), Amynthas corticis (Kinberg, 1867), Amynthas dorsualis Sun & Qiu, 2013, and Amynthas carnosus (Goto & Hatai, 1899). In addition, the results presented are confirmed by the pairwise comparison of COI barcode sequences. The pairwise distances between each new species and the other eighteen corticis -group species are greater than 14.7% on average. Furthermore, the pairwise distance between A. shengtangmontis shengtangmontis and A. shengtangmontis minusculus is 10.7–11.4%.
Bibliography:ObjectType-Article-1
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Academic editor: F. Govedich
ISSN:1313-2989
1313-2970
DOI:10.3897/zookeys.884.30988