What's That Bug? does not endorse extermination

Mating Pill Bugs
May 22, 2010
I read online that this is rarely observed – don’t know if that’s true or not but I’m sending it to you in case you didn’t have it documented on your website. Keep up the good work.
Tim
Memphis, TN

Mating Pill Bugs

Hi Tim,
Thanks so much for contributing your wonderful images to our website.  We really appreciate the generosity of the Wildlife Theater website.  It seems strange that this would be such an uncommonly observed activity since there is no shortage of Pill Bugs in our own garden.

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What's That Bug? does not endorse extermination
Location: Memphis, Tennessee
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3 Responses to Mating Pill Bugs

  1. mister marmot says:

    I just observed this behavior on the concrete steps outside the backdoor after a night steady light rain in northern St. Louis. They appear to be Trachelipus rathkei. Their antennae were not obvious (they have them tucked under?) and the curled under section with the pleon’s appeared to be the antennae so I was thinking this was an attack because the heads were fighting. Now that I understand what the pleon’s are it’s obviously mating. My two look nearly identical with the smaller darker shelled crustacean on top of a more mottled brown larger crustacean.

    I can tell you the process is not quick. They have been at it for 15 minutes so far. The female is moving forward and backwards in an attempt to get away. While not actually trying to throw the male off when she walks away more quickly he will sometime lose his grip a bit and then will aggressively curl under her and manipulate with his pleons and rear legs to lift her posterior off the ground.

    They are under a glass container to limit their range for she is eagerly trying to move along. I’ll reply with the final time of completion.

  2. mister marmot says:

    Well, the male was at it for at least 45 minutes and upon the next check-up the proved that they are powerful enough to raise up a clear quart Tubbaerware container and escape.

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