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