A larvae of *corydalus texanus* (Megaloptera:Corydalidae) seen digging a burrow in a sandy stream bank in order to pupate. The larvae is large, dark and leather. The most distinctive feature is its large sclerotized head with mean-looking mandibles.
It must be #Dobsonfly season. I just spent 3 days on the Colorado River and we saw no less than 5 #Hellgrammite larvae crawling on the bank. These aquatic species dig a burrow in the bank to pupate before the short-lived adults emerge to reproduce. #AquaticInvertebrates #streamEcology