161a (160a).    Abdominal sternites freely movable (%% only; also refer to couplet 182); abdomen

tip exposed beyond elytra; last tarsal segment elongated, others are short (Figs.A-D) (predators)

…………………………………………………………...............…………(Coleoptera)  Rhizophagidae

 

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                             A                                     B                                     C                                       D

 

 

161b.     First 2-4 abdominal sternites somewhat fused or immovable; eyes usually notched; most

             are black or brownish (Figs.A-H) (predators)...................………....(Coleoptera)  Tenebrionidae

 

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                          A                       B                                    C                       D                                                 E

 

                                        

                                           F                                     G                              H