Metaphire anomala ( Michaelsen, 1907 )

Nguyen, Tung T., Trinh, Kim-Binh T., Nguyen, Hong-Lan T. & Nguyen, Anh D., 2017, Earthworms (Annelida: Oligochaeta) from islands of Kien Hai District, Kien Giang Province, Vietnam, with descriptions of two new species and one subspecies, Journal of Natural History 51 (15 - 16), pp. 883-915 : 893-894

Metaphire anomala ( Michaelsen, 1907)

( Figure 7 )

Pheretima anomala Michaelsen, 1907: 167 , fig. 14.

Metaphire anomala – Sims & Easton 1972: 237.

Material examined

33 matures (CTU-EW 020.06) Lai Son Island (09°48 ʹ 01 ʹʹ N, 104°39 ʹ 18.4 ʹʹ E) Kien Hai District , Kien Giang Province, 14 November 2013, coll . Kim-Binh T. Trinh.

Diagnosis

Medium size, length 104–160 mm, diameter 4.3–5.3 mm, 51–131 segments. Prostomium 1/2 epilobous. First dorsal pore in 12/13. Setal number 43–74 in viii, 65–74 in xxx, 7–16 between male porophores in xviii; setal distance aa = 1.2 ab, zz = 1.3 zy. Four pairs of spermathecal pores in lateroventral intersegments 5/6/7/8/9. Male pores located inside copulatory pouches in xix or xx. Genital markings variable among different populations, from totally absent to widely paired in segments between xvii and xxiii. Testis sacs separated. Holandric. Intestinal caeca simple. Septa 8/9/10 absent.

Habitats

The species was found in both natural forest and fruit plantation.

Remarks

The species is widely distributed in Vietnam (Lai Chau, Son La, Quang Tri, Binh Dinh, Dak Lak, Ba Ria-Vung Tau, Dong Nai, Kien Giang, An Giang, Dong Nai and Tay Ninh), but never found in northeastern Vietnam ( Nguyen et al. 2016) . Its occurrences have also been reported from India, Myanmar, Thailand, Cambodia, Laos and southern China ( Nguyen et al. 2016).

Figures

Figure 7. Metaphire anomala (Michaelsen, 1907). (a) Male region (mp = male pore); (b) ventral view of spermathecal region (sp = spermathecal pore); (c) intestinal caecum; (d) spermathecae (amp = ampulla, dv = diverticulum); (e) prostatic gland. Scale bar = 1 mm.