Currently viewing the category: "Wedge Shaped Beetles"

Location: Jamestown, RI
August 22, 2011 3:06 pm
This little guy was visiting the mountain mint 8/19/11.
Signature: PeeGee

Wedge Shaped Beetle

Dear PeeGee,
At first we thought this looked like a Tumbling Flower Beetle in the family Mordellidae, but when we couldn’t find a match on BugGuide, we broadened our search, and eventually identified it as a Wedge Shaped Beetle,
Macrosiagon dimidiata, which we found on BugGuide where this information is provided:  “Adults said to like to feed on Mountain-mint, Pycnanthemum spp.(1)  Larvae, like other members of the genus, are parasitoids of Hymenoptera.”  BugGuide expands on that with this remark:  “Females lay eggs on flowers, larvae hitch a ride from one of its hosts (Hymenoptera) and parasitize the brood.”  We are creating a brand new Beetle subcategory to house your submission.