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Guides

• Omus audouini

  Audouin's Night-stalking Tiger Beetle

  Omus audouini, commonly known as Audouin's Night-stalking Tiger Beetle, is a nocturnal tiger beetle species in the family Cicindelidae. It exhibits pronounced sexual size dimorphism with females larger than males, and possesses mandibles that serve dual functions for prey capture and mating amplexus. The species shows niche partitioning with sympatric O. dejeanii through body size and mandible length differences following Hutchinsonian Ratios. It is of conservation concern in Canada due to its extremely limited distribution.

  nocturnaltiger-beetleconservation-concernsexual-dimorphismniche-partitioningsalt-marshmandible-dimorphismextended-mating-duration