Female Broad-Necked Root Borer

Subject:  What is this beetle doing!?
Geographic location of the bug:  Monroe, NY
Date: 07/01/2018
Time: 07:03 PM EDT
Your letter to the bugman:  I’ve never seen this before. What is going on?
How you want your letter signed:  Sciteacher

Female Broad-Necked Root Borer

Dear Sciteacher,
This is a female Broad-Necked Root Borer,
Prionus laticollis, and her ovipositor is extended.  The ovipositor is an organ the female of many species of insects uses to lay eggs, but we are confident she is not attempting to lay eggs on the plank upon which the image was taken.  According to BugGuide:  “Eggs are inserted into ground (or under litter) in groups. Larvae tunnel downward to feed on living roots of a variety of trees and shrubs. At first they may feed on bark, but then proceed to hollow out small roots. Pupation occurs in spring, about 10 cm under the ground. Life cycle probably three years.” 

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BugMan aka Daniel Marlos has been identifying bugs since 1999. WhatsThatbug.com is his passion project and it has helped millions of readers identify the bug that has been bugging them for over two decades. You can reach out to him through our Contact Page.

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