Metaphire californica (Kinberg, 1867) A Male region, ventral view B right spermatheca C right prostatic gland D spermathecal region E intestinal caecum F transection via copulatory pouch. Scale bar: 1mm.

 
 
  Part of: Nguyen TT, Lam DH, Trinh BTK, Nguyen AD (2020) The megascolecid earthworms (Annelida, Oligochaeta, Megascolecidae) in the Phu Quoc island, Vietnam, with descriptions of three new species. ZooKeys 932: 1-25. https://doi.org/10.3897/zookeys.932.50314