Key to males of described species of Sarcophaga (Bulbostyla)

1. Hind tibia with numerous long posteroventral wavy hairs ........................................................................................... 2

- Hind tibia without long posteroventral wavy hairs, or with few moderately long straight hairs ................................ 5

2. Window of sternite 5 protruding; vesica and juxta as in Figs. 26–27 ....................................... S . (Bulbostyla) ironalis

- Window of sternite 5 not protruding; vesica and juxta not as in Figs. 26–27 ............................................................. 3

3. Strong setae on margin of tergite 5 marginal, sometimes two middle (dorsal) ones slightly anterior to the others; ves- ica as in Figs. 32–34; juxta with two deep invaginations in dorsal view (Fig. 33)... S. (Bulbostyla) semimarginalis

- Strong setae on margin of tergite 5 not marginal but forming half circle spreading on apical third; vesica and juxta not as in Figs. 32–34 .................................................................................................................................................... 4

4. Dark hairs on lateral margin of alula longer than those on anterior margin of anal lobe; hairs fringing calypters at fold creamy-white; vesica and juxta as in Figs. 1–2 ................................................................ S. (Bulbostyla) airosalis

- Dark hairs on lateral margin of alula as long as those on anterior margin of anal lobe; hairs fringing calypters at fold pale to dark brown or black; vesica and juxta as in Figs. 46–47 ....................................... S. (Bulbostyla) subdiscalis

5. Window of sternite 5 protruding; vesica and juxta as in Figs. 40–41 ..................................... S. (Bulbostyla) sternalis

- Window of sternite 5 not protruding; vesica and juxta not as in Figs. 40–41 .............................................................. 6

6. Dark hairs on lateral margin of alula longer than those on anterior margin of anal lobe; syntergosternite 7+8 same color as epandrium; vesica and juxta as in Figs. 14–15 ............................................................ S. (Bulbostyla) cuautla

- Dark hairs on lateral margin of alula as long as those on anterior margin of anal lobe; syntergosternite 7+8 darker than epandrium; vesica and juxta not as in Figs. 14–15 ............................................................................................... 7

7. Hairs fringing calypters at fold pale brown; vesica and juxta as in Figs. 7–8 ............................... S. (Bulbostyla) cadyi

- Hairs fringing calypters at fold dark brown or black; vesica and juxta not as in Figs. 7–8 ....................................... 8

8. Frontal vitta usually matt black; surstylus with a small posteroventral projection (Figs. 55–56); vesica and juxta as in Figs. 52–53 .................................................................................................................................... S. (Bulbostyla) yorkii

- Frontal vitta dark brown; surstylus without a small posteroventral projection (Figs. 23–24); vesica and juxta as in Figs. 20–21 ............................................................................................................................... S. (Bulbostyla) fattigina