Sulcomesitius Móczár, 1970

Wang, Chunhong, He, Junhua & Chen, Xuexin, 2024, Revision of subfamily Mesitiinae (Hymenoptera, Bethylidae) from China, European Journal of Taxonomy 960 (1), pp. 1-61 : 29

Key to the Chinese species of the genus Sulcomesitius Móczár, 1970

1. Female: antenna usually thickened ................................................................................................... 2

– Male: antenna usually slender .......................................................................................................... 4

2. PPP as long as median length of dorsal surface of MPC ........... S. haemorrhoidalis (Maretti, 1897)

– PPP shorter, at most two-thirds as long as median length of dorsal surface of MPC ....................... 3

3. Legs reddish brown; length of eye shorter than width of frons, WF:LE = 1.33 ................................. ............................................................................................. S. impressus Xu, He & Terayama, 2003

– Legs partly dark brown; length of eye equal to width of frons, WF:LE = 1.01 ................................. ....................................................................................................................... S. angustifrons sp. nov.

4. Hypopygium with posterior branches wider than median notch .................. S. latibilobatus sp. nov.

– Hypopygium with posterior branches narrower than median notch ................................................. 5

5. Hind wing with four distal hamuli; basal part of hypopygium with lateral margin distinctly incurved, posterior branches with long setae on inner margin; dorsal harpe 8-shaped ......................................................... S. breviculus ( Xu, He & Terayama, 2003) comb. nov.

– Hind wing with three distal hamuli; basal part of hypopygium with lateral margin slightly incurved, posterior branches with long setae apically; dorsal harpe S-shaped ................................................. 6

6. T2 with dense punctures, granulate basally; mesoscutum distinctly elevated; mesoscutellum densely foveolate; apical margin of PPP blunt in dorsal view ............. S. zhaoi ( Xu & He, 2006) comb. nov.

– T2 with punctures separated by more than 2.0× their diameter; mesoscutum slightly elevated; mesoscutellum foveolate; apical margin of PPP acute in dorsal view ............... S. sparsulus sp. nov.