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Scientific Name Polycentropus iculus Habitat Prefers flowing waters. Seasonality Adults can be found from mid-June to late August. Identification Vertex of the adult head is brown and the antennae pale yellowish brown. Legs are brownish yellow to straw with yellow spurs. Male cercus lower mesal surface with a black robust spine hooking ventrad (Nimmo, 1986). Life History Annual ? Conservation Uncommon. Diet Info Larvae are predacious. Range In Canada, from Alberta east to New Brunswick and in the United States only recorded in Massachusetts (Nimmo, 1986).