tailieunhanh - Three new earthworm species of the genus metaphire sims & easton, 1972 from Dong Nai province, VietNam
Three new earthworm species are described from Dong Nai Province, Vietnam, namely Metaphire malayanoides Nguyen & Lam sp. n., Metaphire grandiverticulata Nguyen & Lam sp. n., and Metaphire xuanlocensis Nguyen & Lam sp. n. Both M. malayanoides sp. n. and M. grandiverticulata sp. n. have four pairs of spermathecal pores in ventrolateral 5/6/7/8/9. | TAP CHI SINH HOC 2017, 39(4): 406-415 Three new earthworm species of the genus Metaphire DOI: THREE NEW EARTHWORM SPECIES OF THE GENUS Metaphire Sims & Easton, 1972 (Oligochaeta, Megascolecidae) FROM DONG NAI PROVINCE, VIETNAM Nguyen Thanh Tung*, Lam Hai Dang Department of Biology, School of Education, Can Tho University ABSTRACT: Three new earthworm species are described from Dong Nai Province, Vietnam, namely Metaphire malayanoides Nguyen & Lam sp. n., Metaphire grandiverticulata Nguyen & Lam sp. n., and Metaphire xuanlocensis Nguyen & Lam sp. n. Both M. malayanoides sp. n. and M. grandiverticulata sp. n. have four pairs of spermathecal pores in ventrolateral 5/6/7/8/9. However, M. malayanoides is distinguished by having two to eight pairs of genital markings located in intersegmental furrows, starting from 19/20; M. grandiverticulata sp. n. is characterized by having only one pair of genital markings between male porophores in xviii, and very large tube-shaped diverticulum. M. xuanlocensis sp. n. has one pair of spermathecal pores inside the spermathecal chambers in 7/8, accessory glands stalked and attached to the enlarged base of prostatic duct, and the presence of penial setae. Keywords: Megascolecidae, Metaphire, earthworms, new species, Dong Nai, Vietnam. Citation: Nguyen Thanh Tung, Lam Hai Dang, 2017. Three new earthworm species of the genus Metaphire Sims & Easton, 1972 (Oligochaeta, Megascolecidae) from Dong Nai Province, Vietnam. Tap chi Sinh hoc, 39(4): 406-415. DOI: . *Corresponding author: thanhtung@ Received 17 August 2017, accepted 20 November 2017 INTRODUCTION Dong Nai province is located in the South Eastern part of Vietnam, with an area of km2 (10°30’ to 11°35’N and 106°45’ to 107°35’E). This region has typical trophic climate with two distinct seasons: the rainy season (from April to November), and the dry season (from December to next March); the average .
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