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T. v. verruculata - Trimerotropis verruculata - female

T. v. verruculata - Trimerotropis verruculata - Female
near Pinawa, Manitoba, Canada
July 27, 2013
Found next to a granite outcropping in mixed woodland. By structure, markings, range and habitat, I can't think that this is any other species but T. v. verruculata, even though it is far paler than any other specimen I've found. As far as I remember, hind wings were yellow.


I'm not sure what the northeast limit for the species is,
but this also looks a lot like Circotettix rabula, which is closely related to T. verruculata. It tends to be larger and stockier, and lighter in color, as well as somewhat louder when it flies, but in morphological details it is very closely similar. The two should be in the same genus (Circotettix), but for the moment they aren't treated that way. C. rabula does reach s. Saskachewan and Alberta in badlands areas, but this location in Manitoba seems quite far east. I can't think of any options other than these two.

With wings spread, it wouldn't be difficult to tell. Also, hind tibiae on C. radula are usually pale (most often yellowish in the north part of its range).

Odds, I think, favor it being T. verruculata.

Thanks David
I had very seriously considered C. rabula for this one but dismissed it finally as, like you mentioned, it seemed quite far out of range. It may not be impossible though.

There were other light-coloured individuals at this location; one was pink, and others were pale brown/brownish-pink. Pink is reported for C. rabula in southern Saskatchewan in Vickery & Kevan. I also photographed light-coloured nymphs here as well.

I will be checking the population more closely this season (tibiae, wing veins, fastigium) to see if C. rabula is indeed there or not (lots of T. v. verruculata about).

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