Jun 1
Northern Stone Agnetina capitata
A stonefly found in Canada and the United States.
image by michael cournoyer
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Northern Stone Agnetina capitata
A stonefly found in Canada and the United States.
image by michael cournoyer
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@yomegami​ submitted: This guy showed up in my room in western Pennsylvania a while after the fashionable beetle boi. I have no idea what it is; my best guess is that it's a stonefly, but that doesn't feel quite right.
It was drawn to the light of my laptop screen and gave me quite a spook between the size and appearance, but I released it back outside once I got a few pictures.
Might be best to merge this and the next submission with the previous two/three. I'll leave it up to you, though.Â
An underside shot of the mystery flier from my last submission. It was through the side of a drinking glass so it's a little distorted.
It'd be nice if you merged this one with the other submission of this mystery flier, if not the fashionable beetle boi.
What a cute little dude! It’s definitely a stonefly, probably a common stonefly in Perlidae. Couldn’t say which species, but I can say they are a friend :’)
Histoire naturelle générale et particulière des insectes nevroptères : première monographie : familles des perlides; General and particular natural history of nevropterous insects: first monograph: families of perlids
By  Pictet, François-Jules
Publication infoGenève :J. Kessmann ;1841
Holding Institution:Musée cantonal de zoologie, Lausanne
Sponsor:Bibliothèque cantonale et universitaire - Lausanne
winter is coming...A Perlid stonefly imitation. #flytying #perlidae #stoneflies #dredging @renzettiinc #nymphhead @flymenfishingco (at Boiling Springs, Pennsylvania)
Common stonefly (Acroneuria abnormis), Newark DE. August 2017.Â
Most stoneflies are considered good indicators of water quality. This is in part due to their aquatic immature forms (naiads), the thoracic gills (or abdominal, depending on the taxon) that need running water to help facilitate capture of dissolved oxygen, sensitivity to temperature or size of the stream or river, and even substrate. Cold, fast-running streams or creeks tend to be a preferred habitat, and stoneflies in North America tend to be more diverse in higher latitudes.Â
Their immature forms are predators, although consuming dead insects or even detritus may occur at young molts. Adults do not feed. One generation occurs each year, although naiads themselves may live up to two years before emerging.Â
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Bug of the Day
Twinsies!
About as close to painting as I’ll ever get, smudging a photo in Photoshop until it sort of looks painted. I think I’ll try this again with other photos and see what I can do!
bug of the day on Flickr.
This big stonefly showed up at the mercury vapor lamp at one of our moth nights out at Montague last summer. I believe it's genus Acroneuria. You can see how insane it was at the sheet that night - I count 2 micro moths, 2 caddisflies, one weevil and one unknown insect photobombing the shot :-). From July 2013.