Drawida companio Blakemore, 2014

Blakemore, Robert J., Lee, Seunghan & Seo, Hong-Yul, 2014, Reports of Drawida (Oligochaeta: Moniligastridae) from far East Asia, Journal of Species Research 3 (2), pp. 127-166 : 148-149

20. Drawida companio Blakemore sp. nov.

Material. Holotype (H) IV0000246438 (DNA sample WO28 ) mature specimen with tip of tail missing, dissect- ed, from mud beside creek on north side of Sido Bridge,

August 2014 BLAKEMORE ET AL.-REPORTS OF DRAWIDA 149

5 7/8rhs Nps 10 9/10rhs 12 dc 15 ba ab 1 mm Ovisac from ovaries to 14

Fig. 17. Drawida companio spermatheca in 7/8rhs and male organs around 9/10rhs; gizzards in 12-14 and ovisac extends from feathery ovaries in 11/12 to 14.

Shindo , Incheon (GPS 37.530490, 126.440730), collect- ed by RJB 4 th May, 2012 and provisionally identified as “ Drawida cf koreana Shindo sp. 2 ” ‾ same location as D. koreana shindo sub-sp. nov .

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Etymology. Latin companio (m. noun), companion (of D. koreana shindo on Shindo and to other Japanese/Korean drawidas); literally: one who eats bread with another.

Description. Dark bluish. Length 80+ mm with 126+ segments. Prolobous. Clitellum paler 10-13. Dorsal pores intermittently present, e.g. in 15/16, 19/20/21, 25/26/27. Nephropores in cd-lines from 6. Spermathecal pores small in 7/8 near c-lines. Male pores on inward-pointing protuberances at posterior of 10 and impinging in 10/ 11 in mid-bc-lines. Female pores in b-lines on 12 near 11/12. Genital marking as unilateral disc presetally on 8 in bc.

Septa 5/6-8/9 are thick, 9/10 is thin and 10/11 is displaced to adherently join with 11/12. Spermathecae have small atria on moderately long ducts from small ampullae, no glands are associated in 8. Male pores on moderately long, coiled vasa deferentia with small white prostate glands adjacent to the exit. Ovaries and many egg strings within combined septa 10/11/12 with empty ovisacs extending from 11 to segment 14. Gizzards in 12-14, i.e., three of. Nephridia elongate vesiculate rather than just thickened ducts.

Remarks. Unique character combinations are the blue colour as in D. koreana , intermittent dorsal pores as in D. barwelli (and some D. japonica ) and with three gizzards in 12-14 as found in these and several other taxa (see Table). This taxon differs morphologically and molecularly from the other Drawida koreana sub-species described herein and appears intermediate to Korean species and to previous records of D. japonica from Japan (Appendix). None of these are particularly close to “ Drawida japonica ” samples claimed from Korea and China as shown in Fig. 1 and these reports need to be reassessed by the authors. The slight possibility exists that samples WO27 and WO28 were mixed in the genetics lab ‾ as with several others in the WO series in the current studies, a highly regrettable situation beyond my control. It is impractical now to resurvey without substantial investment of time and funds, but this does not detract from the results as just their labels would need to be switched in Fig. 1 for relationships to be mutually swapped; the taxonomic conclusions remain the same.