Rhyacophila brunnea Banks 1911

Very common.

Adults fly from early July to late August.

From British Columbia, east to Labrador and as far south as Colorado. In Alberta, this species is mainly confined the mountain and foothill regions (Nimmo, 1971).

Adult antennae are yellow-brown with the vertex of the head a uniform deep brown. Spurs are brown. The dorso-posterior edge of segment 9 in males, is developed posterad and acuminate. Basal article of the clasper is shallowly indented (Nimmo, 1971).

Mix of streams ranging from mountainous to hill, torrential to sluggish, rocky to earthen bottoms.

Overwinters (in Idaho) as a 4th instar larva and pupates late May to early July. Adults fly in the afternoon, with activity coming to a halt at dusk (LaFontaine, 1981).

Larvae feed mainly on decaying leaves (LaFontaine, 1981).

Rhyacophila brunnea là một loài Trichoptera trong họ Rhyacophilidae. Chúng phân bố ở miền Tân bắc.