Nisquallia olympica females range in color from dark slate gray
through lighter gray, mottled brown, olive and rust. Some of the
color variation may be related to how recently they’ve molted.
Image 6 shows the ventral side of a female, shot through the
wall of a plastic terrarium. “Two New Melanoploid Genera
(Orthoptera: Acrididae: Cyrtacanthacridinae) from the Western
United States” James A. G. Rehn, Transactions of the American
Entomological Society (1890-), Vol. 78, No. 2 (Jun., 1952), pp.
101-115. (See JSTOR link Available to read onlline with a free
account.)Jacques R. Helfer, How to Know the Grasshoppers,
Crickets, Cockroaches and Their Allies, Wm. C. Brown, 1963
(republished in 1987 by Dover)