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Colorado Angle-wing

Grapta hylas

Plate XIX — Colorado Angle-wing is Fig. 7
Plate XIX — Colorado Angle-wing is Fig. 7

Butterfly.-The butterfly closely resembles G. silenus on the upper side, but may easily be distinguished by the uniform pale purplish-gray of the lower side of the wings. Expanse, 2.00 inches.

The early stages are unknown. The insect has thus far been found only in Colorado, but no doubt occurs in other States of the Rocky Mountain region.