Jeju-do earthworms (Oligochaeta: Megadrilacea) - Quelpart Island revisited Author Blakemore, Robert J. text Journal of Species Research 2013 2013-02-28 2 1 15 54 http://dx.doi.org/10.12651/jsr.2013.2.1.015 journal article 10.12651/JSR.2013.2.1.015 2713-8615 Aporrectodea trapezoides (Dugès, 1828) Material examined. Mature specimen from Hamdeok Sewoobyong beach collected 15 th Feb., 2012 by RJB providing DNA sample ( WO 16), as yet inconclusive/mixed (cf. WO7 & WO13). Remarks. Cosmopolitan species, first recorded on Jeju by Kobayashi (1941) .