114a (113b).    Body usually gray with 3 black stripes on mesonotum, bare but not metallic;

                       usually 4 notopleural bristles; arista usually plumose (= featherlike) in basal half

                       (Figs.A-B) (parasitoids of grasshoppers & other arthropods) ............(Diptera)  Sarcophagidae

 

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                                       A                                        B

 

 

114b.    Body usually metallic, usually 2 (rarely 3) notopleural bristles; arista usually plumose beyond

             basal half (Figs.A-D) (generally predaceous)...………………...........................(Diptera)  Calliphoridae

 

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                         A                                              B                                          C                                      C