Macromastus marginandus Loomis & Schmitt 1971

Figs. 262, 263

Macromastus marginandus Loomis & Schmitt 1971, p.126; Shear, 1976, p. 16.

New records: IDAHO: Idaho Co., Selway River Road 8.1 mi SE of US-12, Nez Perce National Forest, 46.0848°N, - 115.4955°W, elev. 480 m., 17 July 2008, Thuja plicata, Abies grandis forest, stream-side woody debris, C. Richart, mm ff; Apgar Creek, US-12, 7.7 mi NE of Selway River, Nez Perce National Forest, 46.2159°N, - 115.5373°W, elev. 500 m., 13 September 2010, W. Leonard, m .

Notes: The anterior gonopods have slender median and thicker lateral branches, both with apical fimbriate areas (Fig. 262). The posterior gonopods (Fig. 263) have both sternum and coxa greatly reduced, with the coxites as long, thin, curved, acute extensions mesally. The posterior gonopod femur is enormously inflated. This record extends the distribution of the genus and species to Idaho.