Figure 5 from: Matushkina N (2011) Sting microsculpture in the digger wasp Bembix rostrata (Hymenoptera, Crabronidae). Journal of Hymenoptera Research 21: 41-52. https://doi.org/10.3897/jhr.21.873

Figure 5 - SEM micrographs of internal surfaces of the sting apparatus: A setose membrane of the genital chamber that contact the sting basis B transverse section of the aculeus showing position of the parts of the olistheter C ventral view of isolated second valve showing internal microsculpture between two rhachises D dorsal view of aulax of first valve. d, distal direction. Arrowheads in B indicate position of rhachises (white) and aulaxes (black) of the olistheter mechanism. Scale bars: 3 μm in A and D; 20 μm in B and C.