Six new species of the genus Metaphire Sims & Easton, 1972 (Annelida: Oligochaeta: Megascolecidae) from southeastern Vietnam Author Nguyen, Tung T. Author Nguyen, Nam Q. Author Lam, Dang H. Author Nguyen, Anh D. text Raffles Bulletin of Zoology 2020 2020-04-22 68 220 236 journal article 10.26107/RBZ-2020-0019 2345-7600 4577217 650E406A-6668-42DE-B6A6-637B154A10FE Key to the species of Metaphire in southeastern Vietnam 1. Male pores in xix ....................................................................2 – Male pores in xviii ..................................................................3 2. Spermathecal pores paired lateroventrally in 5/6/7/8/9. Clitellum normal, ring-shaped .............. M. anomala ( Michaelsen, 1907 ) – Spermathecal pores paired lateroventrally in 5/6/7/8. Clitellum saddle-shaped ( Fig. 6 ) ......................... M. setosa , new species 3. Genital markings present in the male region .........................4 – Genital markings absent in the male region.........................12 4. Intestinal caeca manicate .......................................................... .................................... M. pacseana ( Thai & Samphon, 1988 ) – Intestinal caeca simple ............................................................5 5. Spermathecal pores in 5/6/7/8/9 .............................................6 – Spermathecal pores in 6/7/8/9 ................................................9 6. Genital markings in intersegment 19/20 and subsequent intersegments. Setal penis present ............................................ .................................. M. malayanoides Nguyen & Lam, 2017 – Genital markings present in segments. No setal penis ..........7 7. Only one pair of genital markings in xviii. Septum 8/9 absent .................. M. grandiverticulata Nguyen & Lam, 2017 – No genital markings in xviii. Septum 8/9 present ................8 8. Spermathecal pores located dorsally. Four to eight pairs of genital markings in xvii, xix, and subsequent segments ( Fig. 5 )................................................. M. songbeensis , new species – Spermathecal pores located lateroventrally. Two pairs of genital markings in xvii and xix .......... M. posthuma ( Vaillant, 1868 ) 9. Spermathecal pores located dorsally. Genital markings present in xvii and xix ( Fig. 2 )........................... M. haui , new species – Spermathecal pores located not dorsally. Genital markings present in intersegments 17/18 and 18/19............................10 10. Male region strongly concave.............. M. bahli ( Gates, 1945 ) – Male region not concave. Genital markings disc-shaped ....11 11. The openings of copulatory pouches close to ventromedial line. Septum 10/11 absent ............ M. saigonensis ( Omodeo, 1957 ) – The openings of copulatory pouches not close to ventromedial line. Septum 10/11 present ............. M. peguana ( Rosa, 1890 ) 12. Intestinal caeca manicate .....................................................13 – Intestinal caeca simple ..........................................................14 13. Spermathecal pores in 5/6/7/8/9. First dorsal pore in 11/12. Seminal vesicles connected ( Fig. 3 ) ......................................... ....................................................... M. bariaensis , new species – Spermathecal pores in 7/8/9. First dorsal pore in 10/11. Seminal vesicles separated ................... M. californica ( Kinberg, 1867 ) 14. Spermathecal pore starting from 6/7 ....................................15 – Spermathecal pore starting from 7/8 ....................................17 15. Three spermathecal pores in 6/7/8/9......................................... ........................................................ M. houlleti ( Perrier, 1872 ) – Two spermathecal pores in 6/7/8..........................................16 16. First dorsal pore in 12/13. Accessory glands present, ending at spermathecal ducts ........... M. guillelmi ( Michaelsen, 1895 ) – First dorsal pore in 11/12. Accessory glands absent ( Fig. 4 ).. ..................................................... M. planatoides , new species 17. Two spermathecal pores in 7/8/9. No setal penis ( Fig. 7 ) ...... .................................................... M. houlletoides , new species – Only one pair of spermathecal pores in 7/8. Setal penis present........................ M. xuanlocensis Nguyen & Lam, 2017