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Species Xestia tecta - Hodges#10936

lost files moth - Xestia tecta lost files moth - Xestia tecta lost files moth - Xestia tecta
Show images of: caterpillars · adults · both
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Lepidoptera (Butterflies and Moths)
Superfamily Noctuoidea (Owlet Moths and kin)
Family Noctuidae (Owlet Moths)
Subfamily Noctuinae (Cutworm or Dart Moths)
Tribe Noctuini
Subtribe Noctuina
Genus Xestia
Species tecta (Xestia tecta - Hodges#10936)
Hodges Number
10936
Synonyms and other taxonomic changes
Xestia tecta (Hübner, [1808])
Size
FWL ≈ 16-18mm
Identification
Adult: FW ground color is rich red-brown, strikingly patterned with light gray and ochre scales, producing lighter areas that appear to be multicolored ● The median area appears darker and redder than the rest of the wing ● Transverse lines are dark red-brown to gray-brown ● AM is relatively smooth and straight ● PM is strongly dentate with the tips of the teeth accentuated with dots in many individuals ● Subterminal line is smooth and pale ● The three spots are similar to the lines on the outside and have an inner ochre line and filling of ochre scales ● Orbicular spot is variable, sometimes small and round but more often elongate and irregular ● Reniform spot is relatively narrow and upright ● Claviform spot is small but usually evident due to lighter filling ● HW is medium red-brown with a heavy suffusion of smoky gray scales, with rosy-pink fringe ● Head and thorax are covered in red-brown hair-like scales ● male antenna is strongly biserrate. a
Larva: smooth, mottled reddish brown with a broad white lateral band. a
Range
Limited to northern British Columbia in our region. It has been found at Pink Mountain but likely occurs on other mountains since it is known from adjacent southwestern Yukon Territory. a
Habitat
Widely distributed on wet arctic shrub tundra across the northern regions of both Eurasia and North America, extending southward to sub-alpine forests at high elevations in the Rocky Mountain region. a
Season
Flies near timberline in the mountains of northern British Columbia during the summer a
Food
Larva: feeds on hardwood shrubs such as huckleberries (Vaccinium spp.) in the Ericaceae and dwarf birch (Betula nana) in the Betulaceae. a
See Also
Xestia okakensis - the only species with which it is likely to be confused in its northern distribution. It is usually smaller and smoother appearing, with more even red-brown color to the forewing. Its postmedial line is smooth or weakly scalloped, lacking sharp teeth as in X. tecta. Its reniform spot is rounded or oval with a weak or absent lateral indentation unlike the narrow upright spot of X. tecta. a
Internet References
Pacific Northwest Moths – detailed description & images of pinned adults
Moth Photographers Group – images of pinned adult and live larva
BOLD Systems - images of pinned DNA supported specimens