Amynthas seoraksan seoraksan Blakemore

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

13. Amynthas seoraksan seoraksan Blakemore sub-sp. nov. ( Fig. 7A ).

Material. IV 0000261306 (Holotype DNA sample HY7 - nil results) mature, sketched and dissected from Seoraksan Mt, (38̊06′21.34′′N 128̊24′37.52′′E), collected by Dr H.-Y. Seo, 26 th July, 2013. Sample also contained an immature Amynthas sp. and an immature blue Drawida sp. (both in IN 0000261307).

Etymology. After the type locality (noun in apposition).

Description. Length 80 mm with 86 segments. Bright red dorsum and pale ventrum, body somewhat transparent and tapers to tail. Epilobous. First dorsal pore 12/13. Perichaetine with ca. 40-50 setae. Clitellum 14-16. Spermathecae in 6/7/ 8 in lateral dark patches with tone or two GM papilla below and median to each pore. Female pore minute not found on clitellum. Male pores in setal arc within dark elongate patches containing two rows of six papillae above one or two below just medial and above each porophore; about twenty-one setae intervene between the male pores. Spermathecal ampullae saccular with clavate diverticulum on bulbous duct with GM glands nearby. Prostates racemose on bent muscular duct with glands correspond internally to the GMs. Seminal vesicles large in 11 and 12. Caeca manicate in 27.

Remarks. As with A. bangtaesan described above, the current species is somewhat similar to Amynthas gucheonensis Song & Paik, 1970 from Gu-cheon Valley on Geoje Island (type locality) and Mt Sopaik on the mainland, relatively distant locations possibly accounting for supposed variability actually due to the combination of different taxa. Their species was described as similar to A. tappensis - both having GMs in spermathecal and male fields but differing in body length and spermathecal shape. Nevertheless, type descriptions differ in many small factors, mostly noticeably by lacking the bulbous spermathecal diverticula which also differentiates from A. s. iti . Unfortunately two attempts to extract and sequence DNA failed to yield genetic results, thus fresh material is required.

Figures

Fig. 7. 7A. Amynthas seoraksan seoraksan sub-sp. nov. Holotype. 7B. Amynthas seoraksan iti sub-sp. nov. Holotype(DNA HY11 in Fig. 1).