ONH

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  • Content Slide
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    1 - Oregon Tiger Beetles mating Cicindela oregona oregona.

    05/23/2008 Mouth of the Elwha River, Port Angeles, Washington

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    2 - Oregon Tiger Beetles mating.

    05/23/2008 Mouth of the Elwha River, Port Angeles, Washington

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    3 - Oregon Tiger Beetles mating.

    05/30/2008 Mouth of the Elwha River, Port Angeles, Washington

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    4 - Oregon Tiger Beetles mating. Note brownish sperm-transfer tube, or aedeagus.

    05/30/2008 Mouth of the Elwha River, Port Angeles, Washington

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    5 - Oregon Tiger Beetles mating. Note partly retracted sperm-transfer tube.

    5/31/2008 Salt Creek Recreation Area, Washington

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    6 - Oregon Tiger Beetle laying eggs.

    5/12/2007 Mouth of the Elwha River, Port Angeles, Washington

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    7 - Oregon Tiger Beetle laying eggs closeup.

    5/12/2007 Mouth of the Elwha River, Port Angeles, Washington

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    8 - Oregon Tiger Beetle laying eggs.

    5/10/2024 Port Williams, Marlyn Nelson County Park, Sequim, WA

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    9 - Oregon Tiger Beetle, the same individual as in slide 8, photographed about 20 seconds later. The ovipositor remains extended.

    5/10/2024 Port Williams, Marlyn Nelson County Park, Sequim, WA

  • Content Slide

10 - Cicindela oregona oregona mating. Note the male withdrawing the sperm-transfer tube. Normal speed followed by 1/10 speed.

In all the Oregon Tiger Beetle populations we’ve observed, we’ve seen pairs mating. During mating and mate guarding, the male grips the female between the thorax and elytra with his jaws.

In the video, the the male withdraws the aedeagus after mating (slide 10). Note that the aedeagus swings through about 180˚, then withdraws into the male’s abdomen. According to A Field Guide to the Tiger Beetles of the United States, the aedeagus also rotates 90˚ on its axis when withdrawing into the abdomen.