Search Field Guide
Advanced Search
MT Gov Logo
Montana Field Guide

Montana Field Guides

Rosey Dart - Diarsia rosaria

Native Species

Global Rank: G4
State Rank: SNR

Agency Status


External Links

General Description
The Rosey Dart (Diarsia rosaria) forewing is red-brown often with the discal cell black between the discal spots. The wingspan is 33 mm (Powell and Opler 2009).

Diagnostic Characteristics
The similar species Diarsia esurialis has a forewing that is yellow, orange, or pink-lavender, often with the discal cell black between the discal spots (Powell and Opler 2009).

Range Comments
Abundant and widely distributed in wet conifer forests of western North America (Powell and Opler 2009).

Observations in Montana Natural Heritage Program Database
Number of Observations: 1

(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)

Food Habits
The larvae feed on grasses (Powell and Opler 2009).

Login Logout
Citation for data on this website:
Rosey Dart — Diarsia rosaria.  Montana Field Guide.  .  Retrieved on , from