Diamesa alpina Tokunaga

(Fig. 23)

Diamesa alpina Tokunaga, 1936: 539 –542, Figs. 5, 6, 8, 11, 20–23, 30, 32.

Diamesa kurobedistalis Sasa et Okazawa, 1992a: 59 –60 (misprinted as Diamesa sp. " kurobedistalis "), Fig. 21 a–k. [Holotype 233: 082.] Syn. nov.

Makarchenko (1996) treated Diamesa kurobedistalis as a synonym of D. leona Roback. However, the hypopygium of the holotype of D. kurobedistalis, with posteriorly elongated laterosternite IX, minute anal point, and U-shaped anal tergal bands (Fig. 23), is similar to that in D. alpina Tokunaga. Therefore, D. kurobedistalis should be regarded as a junior synonym of D. alpina .