Title:

Four new earthworm species belonging to Amynthas Kinberg and Metaphire Sims et Easton (Megascolecidae: Oligochaeta) from Guangdong, China

Subtitle:

Annales Zoologici, vol. 56, no 2 ; New earthworms of Amynthas Kinberg and Metaphire Sims et Easton

Creator:

Zhang, Weixin ; Li, Jianxiong ; Fu, Shenglei ; Qiu, Jiangping

Contributor:

Muzeum i Instytut Zoologii Polskiej Akademii Nauk

Publisher:

Fundacja Natura optima dux

Place of publishing:

Warszawa

Date issued/created:

2006

Description:

Bibliogr. p. 254 ; P. 249-254 : ill. ; 27 cm ; Taxa in Latin

Type of object:

Journal/Article

Subject and Keywords:

earthworms ; Amynthas ; Metaphire ; Megascolecidae ; Mt. Dinghu ; Nanling mountain range China ; new species

Abstract:

In this study, we described two new species of the genus Amynthas with one pair of spermathecal pores in segment 8/9 from the riparian forest in Mt. Dinghu andtwo new Metaphire species with two pairs of spermathecal pores in segment 6/7–7/8 from a coniferous forest and an evergreen broadleaf forest in the Dadingshan station ofthe Nanling National Natural Reserve, Guangdong, China. The former two Amynthas species appear to be closely related to A. antefixus (Gates, 1935), Sichuan, China. However, A. dinghumontis is much smaller, and its slightly convex ellipse-shaped maleporophores are in XVIII or XVII about 0.17–0.25 body circumferences ventrally apart. In addition, there is always a slight twist at about midway of the spermathecal duct from where the slender, twisted diverticulum passed into. Finally, there are no genital markingsor papillae in male pore and spermathecal pore regions, instead of the presence ofa median, presetal genital marking at the midventral line on segments III, IV and V as in A. antefixus. As to Amynthas liaoi sp. nov., it is characterized by the constant presence of two horizontal rows of three to eight presetal and postsetal papillae in segment XVIII,and one horizontal row of about five postsetal papillae in segment IX. The ampulla shapeand size are also different between this new species and A. antefixus. The two Metaphire species are M. nanlingmontis sp. nov. and M. dadingmontis sp. nov. M. nanlingmontis sp. nov. appears to be related to M. jianfengensis (Quan, 1985). They have the same spermathecal pore number and position, and similar male pore copulatory chambers. However, M. nanlingmontis is much smaller in body size thanM. jianfengensis. In addition, there is a special ring-like swelling at the border between the duct and the chamber in the spermathecal diverticulum, and a mushroom-like accessory gland present beside the duct. M. dadingmontis sp. nov. appears to be closely related to M. nanlingmontis sp. nov. However, it is also easy to distinguish them from their different diverticulum shape and accessory genital glands in prostatic region. A comparison among the 10 similar Metaphire species with two pairs of spermathecae in VII and VIII has been made.

Relation:

Annales Zoologici

Volume:

56

Issue:

2

Start page:

249

End page:

254

Resource type:

Text

Detailed Resource Type:

Article : original article

Format:

application/pdf

Source:

MiIZ PAN, call no. P.255, vol 56, no 2 ; MiIZ PAN, call no. P.4314, vol 56, no 2 ; click here to follow the link

Language:

eng

Language of abstract:

eng

Rights:

Rights Reserved - Restricted Access

Terms of use:

Copyright-protected material. Access only for persons authorised by the Museum and Institute of Zoology of the Polish Academy of Sciences.

Digitizing institution:

Museum and Institute of Zoology of the Polish Academy of Sciences

Original in:

Library of the Museum and Institute of Zoology of the Polish Academy of Sciences

Projects co-financed by:

European Union. European Regional Development Fund ; Programme Innovative Economy, 2010-2014, Priority Axis 2. R&D infrastructure

Access:

Closed