Genus Scytonotus 
17 
Ecology — According to labels with preserved samples, S. piger 
has been taken from the following microhabitats: aspen logs and 
litter, mixed lodgepole pine and fir litter, mixed aspen and fir lit- 
ter, moss on logs and stumps, big-toothed maple detritus, choke- 
berry duff, juniper litter, mixed yellow pine and fir litter, birch 
duff, and fern duff. In Montana, Loomis and Schmitt (1971) col- 
lected it from moist moss by a stream; red cedar, larch, white 
pine, and spruce litter; and under rocks by a creek in a lodgepole 
pine forest. 
Distribution — Occurring in two allopatric populations separated 
by approximately 274 mi (438 km), one in the Rocky Mountains of 
northeastern Washington, northern Idaho, and western Montana, and 
the other in the Wasatch and Teton mountains, and associated ranges, 
of eastern Idaho, western Wyoming, and northern Utah as far south 
as Salt Lake County (Figs. 9-10). Specimens were examined as 
follows: 
MONTANA: Flathead Co ., Columbia Falls, 16 juvs., 20 Au- 
gust 1966, D. R. Miller (UCD). Lincoln Co., 8.5 mi (13.6 km) E 
Libby, 3 juvs., 29 July 1958, C. C. Hoff (AMNH); and Bull L. 
Cpgd., M. 5F, 2 May 1965, R. Schmitt (FSCA). Mineral Co., 10 
mi (16 km) S, 3 mi (4.8 km) W Superior, 4 juvs., 13 September 
1978, A. K. Johnson (NCSM); and 10.5 mi (16.8 km) S, 3.5 mi 
(5.6 km) W Superior, along Trout Cr., 2M, 3 September 1978, A. 
K. Johnson (NCSM). 
WASHINGTON: Stevens Co., Abercrombie Mtn., ca. 14 mi 
(22.4 km) E Northport, 48.927°N, 117.458°W, M, 3 September 1980, 
R. Crawford (UWBM). 
IDAHO: Bonner Co., E of Kootenai, entrance U. ID. field 
sta., 2F, 11 August 1991, R. M. Shelley (NCSM). Kootenai Co., 
Coeur d’Alene, 6M, 4F, 3 juvs., 4 September 1949, S. Mulaik 
(NMNH). Latah Co., 4 mi (6.4 km) N, 8 mi (12.8 km) E Harvard, 
Banks Gulch, M, 2 juvs., 16 September 1977, and 7 juvs., 15 
September 1978, A. K. Johnson (NCSM); 8 mi (12.8 km) NE Harvard, 
2M, 11F, 9 June 1982, R. S. Zack (WSU); and S. slope Moscow 
Mtn., M, 3F, 3 October 1964, R. L. Westcott (UCD). Clearwater 
Co., 9.7 mi (15.5 km) W, 6 mi (9.6 km) S Pierce, M, F, 15 
August 1978, A. K. Johnson (NCSM). Fremont Co., 2 mi (3.2 km) 
N Warm River, 4 juvs., 12 August 1959, C. C. Hoff (AMNH). 
Bear Lake Co., Georgetown, MM, FF, 17 August 1931, W. J. 
Gertsch (NMNH); Pineview, 6M, 14 August 1940, W. Ivie, (NMNH); 
Montpelier, Emigration Cyn., MM, FF, juvs., 17 August 1931, W. 
J. Gertsch (NMNH); 9 mi (14.4 km) NW Ovid, 5 juvs., 4 August 
1959, C. C. Hoff (AMNH); and 13 mi (20.8 km) SW Ovid, F, 6 
