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Species Page - Euxoa rufula
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scientific name    Euxoa rufula    

common name     Mountain Dart

habitat
Dry montane coniferous forest.

seasonality
Adults have been collected in Alberta in August.

identification
A medium-size (3.0-3.4 cm wingspan) stubby-winged dark red-brown moth. The basal and postmedian areas are paler than the remainder of the wing. The cubital vein is lightly marked with paler scales, and there is a row of black sagitate marks just inside the subterminal line. The orbicular and reniform spots are finely outlined with black scales, lined inside with pale scales. The hindwings are sooty brown. The small size and ruddy coloration separate rufula from most similar Euxoa, but see also E. intrita. Questionable specimens may be identified using genital characters. The uncus of rufula is very broad and flattened dorsoventrally, and the setae on the dorsal surface are stouter than those near the apex on the ventral surface, which is unique in the Euxoa. The female has an oval unisaccate bursa and lacks flanges on the ovipositor lobes.

life history
Poorly known. There is a single brood each year and the adults are nocturnal and attracted to light.

conservation
An uncommon but fairly widespread species; no obvious concerns.

diet info
No data. Related species of Euxoa are general feeders on low-growing plants.

range
Southern Yukon south in the mountains to New Mexico and Arizona, and northeastern California. Subspecies basiflava occurs from southern Yukon south through the mountains of southern Alberta and British Columbia, west to northeastern California. In Alberta, rufula has been collected in the foothills and mountains.

quick link
http://entomology.museums.ualberta.ca/searching_species_details.php?s=4248



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References (2)
Specimen Info
There are 79 specimens of this species in the online database
Map Distribution
Adult Seasonal Distributioncreate a collection histogram with specimens
Specimen List (79)
Related Links
Moth Photographers Group

 

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