188a (187a).   Maxillae covered by corneous plates (Fig.A) (often included in Cucujidae)

..............................................................…….......................(Coleoptera)  Cucujidae  (old Passandridae)

 

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                                A

 

 

188b.    Maxillae exposed (Fig.A) (general predators) ...........……................................(Coleoptera)  Cucujidae

 

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                                      A