FIGURE 2 A–D. Robber fly wing venation and cells. A in Robber flies (Insecta: Diptera: Asilidae) of Wyoming, USA with keys to genera and species

FIGURE 2 A–D. Robber fly wing venation and cells. A. Leptogaster sp. (Leptogastrinae) (Hull 1962), B. Atomosia puella (Laphriinae) (Hull 1962), C. Pogonioefferia staminea (Asilinae) (Hine 1919), D. Backomyia limpidipennis (Stenopogoninae) (Hull 1962). Abbreviations: veins—C, costa; CuA, anterior branch of cubital (cubitus); CuP, posterior branch of cubital; R1, anterior branch of radius; R, radius branching into R2+3, R4, R5. Cross veins: m-cu, medio-cubital; r-m, radio-medial. Cells: cua, anterior cubital; cup, posterior cubital; d, discal; m, medial (m1, m2, m3, m4); r1, radial (marginal); r3, r4, r5 posterior (submarginal). Figures not to scale.