» Species unicolor (Great Late-Summer Sedge)
Common Names
Where & WhenRegions: East, Midwest, West
Time Of Year (?): Mid-August to late October
Preferred Waters: Rivers and lakes
This species is common in the Northwest and present but uncommon in the East.
Pictures of 4 Caddisfly Specimens in the Species Onocosmoecus unicolor:
Male Onocosmoecus unicolor (Great Late-Summer Sedge) Caddisfly Adult
View 15 PicturesI first just assumed this was Dicosmoecus based on anglers' conventional wisdom since it's a large orange "October caddis," but Creno set me straight. I should have keyed it out. After another look under the microscope, it lacks an anepisternal wart on the mesopleuron (Mesopleuron: The side of the insect mesothorax, and the part to which the fore wings are attached in mayflies.), which rules out Dicosmoecus. The midtibiae have 2 apical (Apical: Close to the apex; tip or end.) spurs and 1 pre-apical (Apical: Close to the apex; tip or end.) spur, and from there the color pattern of the wing points to Onocosmoecus. The location then narrows the species to unicolor. Your Thoughts On Onocosmoecus unicolor:
You must
log in at the top of the page to post. If you haven't registered yet, it's this easy: