Amynthas kanrazanus kanrazanus ( Kobayashi, 1937 )

Blakemore, Robert J., 2013, Jeju-do earthworms (Oligochaeta: Megadrilacea) - Quelpart Island revisited, Journal of Species Research 2 (1), pp. 15-54 : 28-31

Amynthas kanrazanus kanrazanus ( Kobayashi, 1937)

Remarks. Nominal sub-species described from Mt Hala, Jeju ( Kobayashi, 1937: 340, fig 3). Amynthas yongshilensis Hong & James, 2001 is possibly a synonym but is currently ( Blakemore, 2010a) held under A. tokioensis . It was claimed on Jeju by Song & Paik (1969; 1970) but not found in the current survey (cf. A. tokioensis ). There

1 mm

seems no reason why it was initially ignored by Hong &

James (2001), nor subsequently during the last dozen years. Amynthas masatakae (Beddard, 1892)

[ Fig. 9A ]

Material examined. British Museum lectotype (912) designated and described by Blakemore (2012d). IV00002 50401 providing DNA samples ( WO52 failed to yield results resampled as w28 that was contaminated in the lab but was successfully resequenced as w28b) from Cheonji-yeon Falls collected 13 th June, 2012 by RJB .

1 mm

Remarks. Originally from Japan and described from Jeju by Kobayashi (1937: 337) and Song & Paik (1970: 11); it was fully redescribed based on its London types by Blakemore (2012d: fig. 1lhs). Results have since arrived for DNA barcode of the topotypic specimen from Nogeyama, Yokohama described in Blakemore (2012d, fig. 1rhs) (IV0000249941 WO35) that agrees 100% with Cheonji-yeon Falls samples, that now confirm the taxon on Jeju. DNA results for other potential specimens were inconclusive.

megaBLAST comparison indicates 100% match with EF077538 “ A. triastriatus ” from China (an erstwhile synonym of M. masatakae ) that indicates the Chinese specimens are synonyms of A. masatakae , however it is not certain that their identification as A. triastriatus (Chen, 1946: 97) proper is correct thus the true synonymy of this name is not proven. Similarly A. robustus (Perrier, 1872) proper is not proven from Japan (nor Taiwan) and these GenBank vouchers should likely be recorded as A. masatakae following revision by Blakemore (2012b). Gates (1972) had A. masatakae in synonymy of A. robustus (Perrier, 1872) and hence included Quelpart in the domain of this latter taxon, now known to be doubtful due to recent work ( Blakemore, 2012d), thus a restricted A. robustus is excluded.

Figures

Fig. 9. A. Amynthas masatakae specimen showing ventral aspect; prostomium, spermathecae and prostate duct in situ and caecum in 27; providing DNA (w28b). B. Amynthas tralfamadore showing spermathecae and prostate duct in situ plus caecum in 27 (w29). C. A. tralfamadore second specimen providing DNA(w30).