Identification

Field Marks

• Average adult size is approximately from 1.5 to 1.7 inches
• Green face with bold crossline and other facial markings (mustache and goatee) and green eyes
• Green abdomen with bold shoulder stripes
• Mid thoracic stripes have an extra line running diagonally between them forming a 'N' shape
• Dark abdomen with yellow arrow shaped top spots on segments 3 to 8, square spot on segment 9 and round spot on segment 10
• Yellow side patches on segments 7 to 9 outlined on the bottom with black rim
• This specimen is immature. It was raised from a nymph that was captured in the St Louis River in Northern MN. Thanks to Mitch Haag for raising it and Curt Oien for giving me the chance to photograph it

Behavior

One of the most rare species in Minnesota. Extra-striped Snaketail nymphs are found in between boulders in very swift current in clean cold rivers. Adults spend a lot of time on the wing, mostly away from the water, and rarely perches low

Habitat

Clear, cold, mid-sized rivers with large boulders and swift current

Reproduction

Female lays eggs alone by dipping abdomen into water near desired nymph habitat