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Distribution

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A western species, found from extreme western AB west to Vancouver Island, north to northern BC and south to Texas. In Alberta known only from Waterton Lakes National Park (Bolte, 1990).
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General Description

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A small (1.7-2.1 cm wingspan) broad winged dark yellow-brown and grey moth. Specimens of most Eupithecia species, including maestosa, are best identified by examining the genitalia (illustrated below). The absence of a white spot in the tornal area of the forewing will separate it from the very similar Eupithecia columbiata.
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Habitat

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Frequents wooded and shrubby areas.
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Life Cycle

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Poorly known. Adults are nocturnal and come to light. The larvae have been described by McGuffin (1958). The larval host or hosts are unknown.
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Eupithecia maestosa

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Eupithecia maestosa is a moth in the family Geometridae first described by George Duryea Hulst in 1896.[1][2] It is found in North America from extreme western Alberta west to Vancouver Island, north to northern British Columbia and south to Texas and California. The habitat consists of wooded and shrubby areas.

The wingspan is 17–21 mm. Adults are dark yellow brown and grey.[3] They are on wing nearly year round in California.[4]

References

  1. ^ Yu, Dicky Sick Ki. "Eupithecia maestosa (Hulst 1896)". Home of Ichneumonoidea. Taxapad. Archived from the original on March 24, 2016.
  2. ^ mothphotographersgroup
  3. ^ "Species Page - Eupithecia maestosa". Entomology Collection. University of Alberta E.H. Strickland Entomological Museum. Archived from the original on November 2, 2019.
  4. ^ Bug Guide
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Eupithecia maestosa: Brief Summary

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Eupithecia maestosa is a moth in the family Geometridae first described by George Duryea Hulst in 1896. It is found in North America from extreme western Alberta west to Vancouver Island, north to northern British Columbia and south to Texas and California. The habitat consists of wooded and shrubby areas.

The wingspan is 17–21 mm. Adults are dark yellow brown and grey. They are on wing nearly year round in California.

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