Amphinemura coreana Zwick, 1973

Zwick, Peter, 2010, New Species And New Records Of Plecoptera From Korea And The Russian Far East, Illiesia 6 (9), pp. 75-97 : 76

Amphinemura coreana Zwick, 1973

( Fig. 1 )

Material examined. REPUBLIC OF KOREA: Jirisan, Hamyang-gun, Macheon-Myeon , Samjeon-li , Alt. 700 m, 35°20.93'N 127°38.50'E, 11.IV.-8.V. 2004, Malaise trap on small stream, many ♂ and ♀ ; same locality, 27.VII.-16.VIII.2004, 2♀ . Chungnam, Keumsan, Gunbuk-Myeon , Sanan-2-li, 7.-20.IV. 2005, 2 Malaise traps on small stream, 6♂, 6♀ ; same locality, 20.IV .-

8.V. 2005, 5♂, 9♀. Chungbuk, Sangchon-Myeon Dungeon-li near Doma Pass, Alt. 750 m, 2.-26.V. 2006, 2 Malaise traps in forest on small stream, ca 160 ♂, ♀; same data, but 500 m, 21♂, 22♀ .

Notes. This very large species was first described from Korea ( Zwick 1973a) but occurs also in the Russian Far East ( Zhiltzova 2003).

Female. The male genitalia are very different from other Korean Amphinemura , and so are the female genital sclerites. In dorsal view of a cleared specimen ( Fig. 1 ) one notices a large, strongly sclerotized pouch about as long as wide, with parabolic front margin and an acute, rearward pointing muscle attachment on the side. The dorsal face is anteriorly covered by a large collar-like shield with crenulate margin. The shield includes a heart-shaped anterior membranous area with delicate funnel-shaped folds to which the bases of the two receptacles are attached. In the centre of the rear half appear two strong sclerotized folds which converge and form a Y-shaped pattern.

Figures

Figs. 1, 2. Amphinemura spp., cleared female genital sclerites in dorsal view. 1, A. coreana; 2, A. verrucosa. O, cuticular lining of oviduct; Pg, paragenital plate on S8; Prg, pregenital plate on S7; R, receptacle; S9, the scooped front margin of sternite 9; Sg, subgenital plate on S8. Broken lines show borders of underlying sternites.