S. Mahunka szerk.: Folia Entomologica Hungarica 46/1. (Budapest, 1985)

Figs 20-26, Bombus (Megabombus) koreanus (Skorikov), male. Fig. 20. Ocellorbital area. Fig. 21. Mediobasal area of clypeus. Fig. 22. Apical area of clypeal disc. Fig. 23. Mediodorsal impunctate area of scutal disc. Fig. 24. Apical surface of corbicular. Fig. 25. Apical contour of hind basitarsus. Fig. 26. Mediapical surface of metasomal tergum V substraight; the posterior apical angle not much produced compared to the anterior one (Fig. 25). Metasoma: Punctures on Tg relatively coarse and distinct, with more or less radial arrangement at mediapical margin (Fig. 26), Stg with apical margin medially fairly distinctly emarginated. Pubescence fairly short except apical fringes of metasomal sterna; rather dense as a Megabombus. St» (Fig. 27): length measured at the mid line relatively short; apical contour not much produced compared to the base. St

g (Fig. 31): Spiculum large, not well defined from apodeme medially with a small fenestra; a pair of longitudinal streaks distinct and close to each other; apical produced area relatively short; apical contour truncate or weakly concave; haired area relatively narrow. Genitalia: Gonocoxite (= stipes): Dorsal contour seen laterally hardly incurved and substraight, (Fig. 35), apical contour seen dorsally less strongly tapering than in other Megabombus (Fig. 43);dorsobasal inner process relatively long but its inner apical extremity not especially tuberculate,Squama: Inner contour seen dorsally rather mildly and evenly incurved; medilongitudinal depression weak; inner apical tip fairly curved below, inner basal contour substraight; subapical surface hardly inclined inward (Fig. 43); dorsal spike of basal process broad and short (Fig. 39), seen laterally