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Photo#7352
Large Caddisfly - Ptilostomis

Large Caddisfly - Ptilostomis
Durham County, North Carolina, USA
September 20, 2004
Size: circa 22 mm
Found on a lighted wall, about 10:00 p.m. I found an apparently identical caddisfly dead a few days later at the same site. Length was 22 mm (head to end of wings), 12 mm (head to tip of abdomen). This is the basis of my "circa 22 mm" length statement above.

This caddisfly was found just a few feet from where I found another (identical?) one in May:



These are the only two I've seen alive.

Compare to this photo from Ontario:



This was tentatively identified by Robin McLeod as: Phyrganeidae (Giant Casemakers), possibly Ptilostomis ocellifera. Compare Insects of Cedar Creek. Note also Ptilostomis ocellifera was recorded by Wray, Insects of North Carolina (second supplement), p. 21, from the Piedmont and Sandhills region of that state with dates of May 14 and September 8. This looks like two flights, virtually the same dates as I recored in Durham, in the Piedmont.