Great Grig

Subject: Grig
Location: Leavenworth, WA
October 24, 2016 8:31 pm
I just found this on the side of my house (10/24/16) in Leavenworth, WA. Our area is 90% Ponderosa with a few Doug Fir and fewer cedar. Only just under 1” long. But all info says adults only out until August. Could this be a babe monstrosa?
Signature: cb

Great Grig
Great Grig

Dear cb,
Based on this BugGuide image, we believe you are correct that this is a Great Grig,
Cyphoderris monstrosa.  BugGuide lists sightings until September and according to the information page on BugGuide:  “adults from June to August” and “overwinters as a late-instar nymph or young adult in burrow in ground; one generation per year.” 

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