Amynthas bangtaesan confinius Blakemore, 2015

Blakemore, Robert J., Lee, Seunghan & Seo, Hong-Yul, 2015, Account of montane and insular speciation in some Korean megadriles (Annelida: Oligochaeta), Journal of Species Research 4 (1), pp. 1-22 : 10

12. Amynthas bangtaesan confinius Blakemore sp. nov. ( Fig. 6B ).

Material. IV 0000261312 (DNA sample HY9) mature, sketched and dissected from Jeombongsan Mt, (37̊01′ 16.39′′N 128̊25′6.36′′E), collected by Dr H.-Y. Seo, 25 th July, 2013; IV 0000261313, superficially similar mature, same details.

Etymology. Latin ‘ confinius ’ (adj. m) implying “adjoining, contiguous or allied” for its location from neighboring Jeombongsan and similarity to nominal species.

Description. Length 62-80 mm with 89 segments tapering to tail. Reddish-brown dorsum. Epilobous. First dorsal pore 12/13. Perichaetine with 50-60 setae. Clitellum 14-16. Spermathecae in 6/7/ 8 in lateral dark patches with transverse row of six or seven GM papilla below and median to each pore. Female pore single, central on clitellum. Male pores in dark round patches that taper medially and are ringed with papillae; above each porophore is another patch of GMs each with about a dozen papillae in two rows. Spermathecal ampullae deflated with clavate diverticulum on muscular duct. Prostates racemose on U-shaped muscular duct. GM glands correspond internally to the GM papillae. Seminal vesicles large in 11 and 12. Caeca manicate in 27. Gut contains organic matter.

Remarks. The nearest match for HY9 on Genbank is only 88% for Metaphire communissima (AB542620.1 from Japan). Morphologically distinct from the previous sub-species with regards to its dorsal pore commencement, the distribution of the GMs and possibly on the form of the prostate duct (U-shaped vs. straight), the molecular difference of HY4 vs. HY9 is slight 610/613 (~99%) suggesting only sub-specific or ecotypic status. There may be other differences in behavior or morphology that would require further field-collection and study.

Figures

Fig. 6. 6A. Amynthas bangtaesan bangtaesan sub-sp. nov. Holotype providing DNA HY4 (female pore not found). 6B. Amynthas bangtaesan confinius sub-sp. nov. Holotype providing DNA HY9 (see Fig. 1).