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Scientific Name Rhyacophila angelita Seasonality Adults can be found approximately late May to late June. Identification

Adult antennae are yellow with the vertex of the head brownish yellow. Spurs are yellow-brown. In males, the dorsum of segment 9 is about 5 times the length of the sternum. Distal article of the clasper has an…

Adult antennae are yellow with the vertex of the head brownish yellow. Spurs are yellow-brown. In males, the dorsum of segment 9 is about 5 times the length of the sternum. Distal article of the clasper has an upper, basal rounded process directed dorsad (Nimmo, 1971).

Read More + Life History Adults start flying in the evening but stop upon arrival of complete darkness (LaFontaine, 1981). Conservation Widespread and very common. Diet Info Larvae are probably predacious. Range Extends from Yukon south to California and Colorado. Also has been recorded from the northern Appalachians of New Hampshire (Nimmo, 1971).