Amynthas osmastoni ( Michaelsen, 1907 )

Bantaowong, Ueangfa, Somniyam, Pattana, Sutcharit, Chirasak, James, Samuel W & Panha, Somsak, 2014, Four new species of the earthworm genus Amynthas Kinberg, 1867, with redescription of the type species (Clitellata: Megascolecidae), Raffles Bulletin of Zoology 62, pp. 655-670 : 662

Amynthas osmastoni ( Michaelsen, 1907)

( Fig. 6 ; Table 1)

Pheretima osmastoni Michaelsen, 1907: 163 , fig. 11. Type locality: Port Blair, South Andaman. Gates, 1972: 204.

Amynthas osmastoni: Sims & Easton, 1972: 237 .

Material examined. Syntype from ZMH ( V 7171 . Fig. 6 ): Four adults in ethanol (two specimens dissected by Michaelsen) .

Remarks. Amynthas osmastoni differs from A. arenulus , new species, and A. longicaeca , new species, by the presence of a group of small round genital papillae in transverse rows, postsetal, median in VIII or XII or XIII. It also differs by having nephridia on spermathecae and on the segmental chambers in VI–XIV. The sessile genital marking glands are another difference from the new species mentioned above ( Table 1).

Figures

Fig. 6. External and internal morphology of syntype (ZMH V7171) of Amynthas osmastoni: A, external ventral view; B, internal dorsal view; C, spermathecae. Dark arrow indicates the connection of the spermathecae and spermathecal pore.