Descriptions of two new species of earthworm of the genus Pheretima Kinberg, 1867 (Oligochaeta: Megascolecidae) from Mekong delta - Vietnam

Abstract

In this article describes two new species of earthworm (Pheretima mangophila Nguyen,
sp. n. and Pheretima thaii Nguyen, sp. n.) are found in Mekong delta - Vietnam. Pheretima mangophila Nguyen, sp. n. (figure 2): First dorsal pore in 12/13. Spermathecal pores two pairs in 5/6/7. Genital papillae absent. Septa 5/6 - 7/8 thickish, 8/9 and 9/10 absent, 10/11 - 12/13 thin. Intestinal caeca, manicate. Integumentary micronephridia in front of clitellum drop of water- shaped. Pheretima thaii Nguyen, sp. n. (figure 3): First dorsal pore in 12/13. Spermathecal pores three pairs in 5/6/7/8. Genital papillae absent. Septa 5/6/7thickish, 8/9 and 9/10 absent, 7/8 and 10/11/12 thin. Intestinal caeca, manicate.