Thanks so much for your great detective work, Kelsey! Great fun to have the first images at BugGuide!

Thanks so much, Kelsey. I apologize for the quality of the photos. I think that the tibial colour and darkened crossveins indicate pictipennis if I interpret the key correctly, but that may be just wishful thinking. In any case, it's a new genus for New Brunswick at BugGuide. Thanks again!

Definitely Orthonevra pictipennis! The single eye stripe points towards the pictipennis species group. From there, Sedman 1966 has a key to the four species in North America, but - here's the catch - it's a bit backwards; if you compare it to the pictures from Jeff Skevington, there is disagreement about which pair of pictipennis/weemsi and pulchella/anniae has the clouded wing veins... in Sedman's key he says that pulchella/anniae have clouded crossveins, but in the text of the paper he describes weemsi as a new species with clouded crossveins, and the wings on pulchella as hyaline. So he got the first couplet backwards in the actual key.

So, one of pictipennis/weemsi. If the tibiae are black medially (which they seem to be from this picture), then it's pictipennis.

Glad we agree!