Butterflies and Moths of North America

collecting and sharing data about Lepidoptera

MacNeill's Sootywing
Hesperopsis gracielae (MacNeill, 1970)

Family: Hesperiidae
Subfamily: Pyrginae
Identification: Fringes are checkered. Upperside is black. Forewing has a mottled gray pattern and a row of short dark bars near the outer margin. Hindwing may have pale spots. Underside is black; hindwing has a few small pale spots.
Wing Span: 3/4 - 1 1/4 inches (2 - 3.2 cm).
Life History: To find receptive females, males patrol all day around the host plants and in gulches. Females lay eggs on the host plant. Caterpillars eat leaves and make shelters of rolled leaves.
Flight: Many broods from April-October.
Caterpillar Hosts: Various plants in the goosefoot family (Chenopodiaceae) including shadscale (Atriplex canescens), quail brush (Atriplex lentiformis), and silverscale saltbush (A. argentea var. expansa).
Adult Food: Flower nectar.
Habitat: Desert washes, alkali flats, arid canyons.
Range: Along the Colorado River from southern Utah to southern Nevada and southern Arizona; in the Coachella Valley, California.
Conservation: Not usually required.
NCGR: G4 - Apparently secure globally, though it might be quite rare in parts of its range, especially at the periphery.
Management Needs: None reported.
Comments: NULL