Great Grig we suppose

Subject: Uhler’s or Great Grig
Location: Premiere Ridge, British Columbia
May 9, 2016 7:59 pm
I’m a forester working the Kootenays, British Columbia. We exposed this guy under some loose bark. I did a bit of research and figured it’s a Uhler’s or maybe a Great Grig or a hump winged cricket. Are these all interchangeable names for the same insect?
Signature: J. Rynierse

Great Grig
Great Grig

Dear J. Rynierse,
We believe this is a Great Grig,
Cyphoderris monstrosa, whose name means “MONSTROSA: like a monster; very large and abnormally shaped or hideous (this species is the largest of the 3 in North America)” according to BugGuide,  though we would not rule out one of the other species in the genus identified on BugGuide.  We are not certain where you found the name Uhler’s Grig, but there is one image of a Great Grig on BugGuide that mentions the name Uhler’s Grig.  According to BugGuide, Hump Winged Crickets belong to the family Prophalangopsidae, and there is but one North American genus in the family, so globally, it is fair to say that all Great Grigs are Hump Winged Crickets, but there might be other Hump Winged Crickets elsewhere in the world that are not Grigs.  For your purposes in British Columbia, the two names are synonymous, though one is a family name and the other a species name.

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