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

Table 1, Synoptic diagnoses of four Far-East Asian Megabombus species (male) Characters provenance No. of individuals examined Head width Hair length (on T

5

, maximum) Ocellocular impunctate area Ocellocular punctate band Punctation of postocellocular area Interspace of postocellocular area Fl : F

2 : F

3 Malar area (min. length/width at mandibular base Punctation of T_ _ 5-6 Sty: breadth at median line St

g

: distance between a pair of longitudinal streaks Width of spiculum Gonostylus: width of apically exposed area apical process seen dorsally subapical angulation Squama: inner basal contour of basal upturned part dorsad inclination of outer apical surface Penis valve: apical serration koreanus N. Korea 3 4.0-4.2 mm short (1.2 mm) shining, outer part shagreened; well defined narrow; interspace fairly shagreened dense, strong, large shining 20 : 11 : 19 1.8-1.83 dense relatively narrow (Fig. 27) narrow (Fig. 31) wide (Fig. 31) relatively wide (Fig. 43) not inclined (Fig. 51) weak (Fig. 47) substraight (Fig. 43) rather weak (Figs 39, 43) medium (Fig. 55) yezoensis Hokkaido (Japan) 5 3.8-4.0 mm long (2.4-2.7 mm) dull, shagreened throughout; well defined narrow; strongly shagreened dense, moderately strong, medium dull, shagreened 31 : 18 : 31 1.83-1.92 moderate relatively narrow (Fig. 28) narrow (Fig. 32) narrow (Fig. 32) narrow (Fig. 44) fairly inclined ventrad (Fig. 52) strong (Fig. 48) mildly convex (Fig. 44) moderate (Figs 40, 44) relatively large (Fig. 56) consobrinus N. Korea 2 4.3-4.4 mm long (1.4-1.9 mm) shining; well defined very narrow or virtually absent; shining relatively sparse, relatively weak, small shining 33 : 19 : 33 1.92-1.99 sparse relatively broad (Fig. 29) fairly wide (Fig. 33) wide (Fig. 33) moderate (Fig. 45) not inclined (Fig. 53) relatively weak (Fig. 49) mildly convex (Fig. 45) mild (Figs 41, 45) fairly large (Fig. 57) czerskii N. Korea 2 3.8-4.2 mm short (1.2-1.4 mm) shining; ill-defined relatively wide; outer part shagreened fairly sparse, weak, medium shining 21 : 14 : 17 1.77-1.81 fairly dense broad (Fig. 30) wide (Fig. 34) narrow (Fig. 34) relatively wide (Fig. 46) subtly inclined ventrad (Fig, 54) very strong (Fig. 50) mildly convex (Fig. 46) strong (Figs 42, 46) small (Fig. 58) n