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Montana Field Guide

Montana Field Guides

Civil Rustic Moth - Caradrina montana

Native Species

Global Rank: GNR
State Rank: SNR

Agency Status


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General Description
The Caradrina montana wingspan is 26 - 31 mm. The forewing is pale gray or brownish-gray with dark reniform and orbicular spots. The reniform spot has white dots around its perimeter. The antemedian and postmedian lines are usually broken into dots. There are 4 or 5 black marks along costa (anterior vein of the wing). The subterminal area may have dark shading. The hindwing is white with a dark-spotted terminal line (Powell and Opler, 2009).

Adults fly in summer and early fall. In California it has been reported that adults fly from mid-February through November, and it is very likely they have 3 or 4 generations (Powell and Opler 2009).

Range Comments
C. montana occurs in western North America including Alaska, Yukon, Northwest Territories, south to California, west to New Mexico, north to Manitoba, plus several recent records from southern Ontario. It also occurs throughout Europe and western Asia (Powell and Opler, 2009).

Observations in Montana Natural Heritage Program Database
Number of Observations: 2

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density



(Observations spanning multiple months or years are excluded from time charts)

C. montana prefers dry open forests (Powell and Opler, 2009).

Food Habits
C. montana larvae feed on leaves of alfalfa (Medicago sativa), dock (Rumex spp.), hawkweed (Hieracium spp.), plantain (Plantago spp.), and sow-thistle (Sonchus spp.)(Powell and Opler, 2009).

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Civil Rustic Moth — Caradrina montana.  Montana Field Guide.  .  Retrieved on , from