Part 35

(3) Hesperia xanthus Edwards, Plate CXXXIII, Fig. 3, ♂ (The Checkerling).

Resembling H. tessellata, but much smaller and darker at base of wings, spots more crowded. Expanse 1.00 inch.

Found in Colorado and Rocky Mountains to west and south.

GENUS PHOLISORA SCUDDER

(THE SOOTY-WING).

(1) Pholisora catullus (Fabricius), Plate CXXXIV, Fig. 1, ♀ (The Common Sooty-wing).

Easily recognizable by means of our figure. Expanse 0.80-1.15 inch.

The caterpillar feeds on “lamb’s-quarter” (Chenopodium).

Ranges over all temperate North America.

(2) Pholisora hayhursti (Edwards), Plate CXXXIV, Fig. 2, ♀ (Hayhurst’s Sooty-wing).

Easily distinguished from preceding by white color of under side of abdomen as well as by the different arrangement of spots on fore wing. Expanse 0.90-1.15 inch.

Ranges from Pennsylvania to the Gulf as far as the Rocky Mountains.

(3) Pholisora lybia Scudder, Plate CXXXIV, Fig. 3, ♂ (The Mohave Sooty-wing).

Distinguished from the two preceding by the white fringes of the wings and by the markings of the upper side. Expanse 0.80-1.40 inch.

Found from western Texas to Nevada and Arizona.

(4) Pholisora alpheus (Edwards), Plate CXXXIV, Fig. 4, ♂ (New Mexican Sooty-wing).

More checkered on the upper side than the other species, tip of fore wing white. Expanse 0.95-1.00 inch.

Ranges from New Mexico to Arizona.

GENUS THANAOS BOISDUVAL

(THE DUSKY-WINGS).

(1) Thanaos brizo Boisduval & Leconte, Plate CXXXV, Fig. 1, ♀ (The Sleepy Dusky-wing).

The two rows of light yellow spots on the outer margin of the hind wings appear more distinctly on the under side. Expanse 1.25-1.60 inch.

Larva feeds on oaks and other plants. Ranges from the Atlantic to the Pacific, from New England to Florida and Arizona.

(2) Thanaos icelus Lintner, Plate CXXXV, Fig. 2, ♂ (The Dreamy Dusky-wing).

Under side paler than upper, marked with many small, indistinct yellow spots, not forming well-defined bands as in preceding species. Expanse 1.00-1.20 inch.

Caterpillar feeds on aspen, oaks, and witch-hazel. Ranges from Nova Scotia to Oregon, south to Florida and Arizona.

(3) Thanaos lucilius Lintner, Plate CXXXV, Fig. 3, ♂ (Lucilius’ Dusky-wing).

Closely related to preceding, but distinguished by more regularly checkered fringes of the fore wing and the different arrangement of the spots on the under side. Expanse 1.20-1.40 inch.