What's That Bug? does not endorse extermination

What the heck?
Location: South Dakota kitchen floor
May 18, 2011 8:34 am
I found this on the floor. At first I thought it was something off a sunflower but found this worm looking thing inside.
Signature: Please help

Unknown Thing

We are baffled as to how to even categorize this thing.  There are not enough visible characteristics except to say that it resembles a grub or maggot, but being in that casing is quite curious.  Furthermore, why are there two of them?  The casing looks fibrous and hemplike, or possibly like fur.  Do you perhaps have a house pet with similar looking hair?  We are going to feature your photo in the hopes that our readership is able to provide some information.

Karl solves the Mystery
Mysterious Encased Grublike Thing – May 18, 2011
Hi Daniel and Please help:
Your mysterious objects look to me like the mature, presumably overwintered, seedheads of burdock (Arctium sp.). If so, the little grubs are likely the larvae of the Burdock Seedhead Moth (Metzneria lappella), a variety of microlepidoptera in the family Gelechiidae. The larvae feed on the developing seedheads, then overwinter as larvae and pupate within the seedhead in the spring. Burdock is very common here in southern Manitoba and in the fall the seedheads are typically very heavily infested with these little guys. Perhaps they hitched a ride into your home on someone’s clothing, or maybe a dog. Burdocks were originally Eurasian species but they have been naturalized in North America for a very long time. I suspect the same goes for the Burdock Seedhead Moth. Regards.  Karl

Wow Karl,  that was an impressive identification.

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What's That Bug? does not endorse extermination
Location: South Dakota

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