Two new species of Amynthas (Clitellata: Megascolecidae) from lettuce fields of Mt. Taebaek, Korea

Two new species of earthworms were found in a survey of lettuce cultivation fields, created by slash and burn. Amynthas hasamensis sp. n. and Amynthas samgaki sp. n. have simple intestinal caeca and no genital markings. Amynthas hasamensis sp. n. keys to the hawayanus group in Sims & Easton (1972) with three pairs of spermathecae in VI, VII, and VIII. Its male field areas in XVIII are complex with paired oval male discs bearing two transverse ridges with seminal grooves between the ridges. Amynthas samgaki sp. n. keys to the morrisi group with two pairs of spermathecae in VI and VII, and has a male field with large egg-shaped raised pads with transverse seminal grooves.