The megascolecid earthworms (Annelida, Oligochaeta, Megascolecidae) in the Phu Quoc island, Vietnam, with descriptions of three new species Author Nguyen, Tung T. Department of Biology, School of Education, Can Tho University, Can Tho City, Vietnam Author Lam, Dang H. Department of Biology, School of Education, Can Tho University, Can Tho City, Vietnam Author Trinh, Binh T. K. Department of Applied Biology, Faculty of Agriculture and Rural Development, Kien Giang University, Kien Giang, Vietnam Author Nguyen, Anh D. Duy Tan University, 254, Nguyen Van Linh, Da Nang, Vietnam & Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, 18, Hoangquocviet Rd., Caugiay District, Hanoi, Vietnam ducanh410@yahoo.com text ZooKeys 2020 932 1 25 http://dx.doi.org/10.3897/zookeys.932.50314 journal article http://dx.doi.org/10.3897/zookeys.932.50314 1313-2970-932-1 6C64E085E11A4AEE85EE3443E296C8DF 949CD324ED3652DEA8CA6B89F09F8E5E Metaphire planata (Gates, 1926) Fig. 8 Material examined. 10 matures (CTU-EW.005.030), industrial tree plantations ( 10°09'31"N , 104°00'38"E ), 25 m, 5 November 2016, coll. Lam HD & Trinh TKB; 21 matures (CTU-EW.005.031), residential gardens ( 10°12'09"N , 103°58'06"E ), 36 m, 5 November 2016, coll. Lam HD & Trinh TKB. Diagnosis. Medium-sized. Prostomium epilobous. First dorsal pore in 11/12. Two pairs of spermathecal pores in lateral intersegments 6/7/8. Male pores located inside copulatory pouches in xviii. Genital markings absent in the male region, but 1-3 located near each spermathecal pore. Intestinal caeca simple. Holandric. Testis sacs separated. Accessory glands present, sac-shaped. Septa 8/9/10 absent. Habitats. The species was commonly found in residential gardens and industrial tree plantations. They live in leaf litter and upper soil layer. Vietnamese name. Giun plana. Remarks. The species has been commonly found in southern Vietnam. However, it was erroneously identified as Metaphire californica ( Nguyen 2014 , as Pheretima california : sic!; Nguyen et al. 2016 , 2017 ), but recently corrected ( Nguyen et al. 2019 ). In addition, it has not been recorded from the small islands of Lai Son, An Son, and Hon Tre, which are located between Phu Quoc island and southern Vietnam ( Nguyen et al. 2017 ). Figure 8. Metaphire planata (Gates, 1926) A Male region, ventral view B spermathecal region, lateral view C left spermathecae D right prostatic gland E intestinal caecum. Scale bar: 1mm.