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Stethophyma male in Fundy National Park - Stethophyma lineata - male

Stethophyma male in Fundy National Park - Stethophyma lineata - Male
Caribou Plain Trail, Fundy National Park, Albert County, New Brunswick, Canada
August 8, 2013
New for the park, for New Brunswick to Bug Guide and for me.

*Update- Apparently I goofed in the initial ID, this is NOT S. gracile and it has been reassigned to Stethophyma lineata . Thanks to David Ferguson for picking up my oversight!

Images of this individual: tag all
Stethophyma male in Fundy National Park - Stethophyma lineata - male Stethophyma lineata male in Fundy National Park - Stethophyma lineata - male

nice shot - looks like S. lineatum

Distinguishing features visible?
I have a specimen. What should I be looking for?

OK, I think I found it...
Vickery and Kevan (1985) mention "Tegmen with conspicuous pale submarginal longitudinal stripe on basal half
to three-quarters. Lateral carinae of pronotum cut by 3 sulci ahead of
middle" for S. lineatum and I think I DO see that pale longitudinal stripe, as well as the three sulci in this image. Thank you very much for picking that up, David! I am going back to the site this week and I will try to find more.

The three sulci thing should say "usually",
the middle one doesn't always cut all the way through. The "white" stripe is sometimes more yellowish, but it is always there. Also, in S. lineatum I think the wings are usually longer and in the males narrower, so they make the insect look proportionately more slender (though the body likely isn't). I haven't seen enough of them (in fact I've never seen a live S. gracile) to know what, if any, habitat difference there might be. Growing up on the Great Plains, S. celata is the one I saw the most of (but never a lot), and S. lineatum was rare up in the Colorado / Wyoming Rockies.

OK...Noted and thanks.
I was looking at the wrong place for the pale stripe, as I misinterpreted the character. I was actually looking for it on top of the tegmina. Anyway, now to find a female in the same area, as there aren't any images of those here yet. Do you know whether she also shows the pale stripe in a very similar way? So far, the females I have seen of S. gracile all have proportionately shorter wings than the males, so it will be interesting to see whether that is the case with this species as well, and whether the pale stripe follows the same proportions on the wing.

As far as I know, the females look like the males,
Just bigger and more stocky, maybe average darker. They seem to be able to fly just as well too, but often prefer to dive down into the reeds and grass, so are harder to find (and often to catch, because they often scoot around on the ground after they drop). Here is one that seems to have been photographed in Alaska.

Apparently there is a shorter-winged version too, but I haven't seen it.

OK, I found a female (I think...)
She is really beautiful. However, she does not look like the photo you linked from Alaska. You can see her here: . It is surprising how much she looks like the European females of Stethophyma grossum , yes?

That is a very nice image by Derek Sikes...
...Who also contributes to Bug Guide. If the females of Stethophyma lineatum around here look anything like that, I am very stoked to find one, they are absolutely beautiful. Thanks for the link and the info. All going well (weather and otherwise), Thursday this week will be the day to look.

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