Appearance
''Olethreutes arcuella'' has a wingspan of 14–18 mm. Forewings of these medium size moths have an orange-rufous ground colour, with some yellow patches, a few metallic blue-grey or silver-colored streaks and a wide black marking in the middle, which includes a row of three small, silver colored spots. The hindwings are brown. The caterpillars are purplish- gray to violet-brown and have a yellowish-brown head.This species is quite similar to ''Olethreutes subtilana'', but has rather narrower wings.
Distribution
This species can be found in most of Europe, in the East the Palearctic ecozone and in the Near East.
Behavior
This species usually has one generation . The flight time of these day-active moths ranges between late May and August. The caterpillars feed on dead and dried out leaves and similar plant material. Also pupation takes place in plant debris.
Habitat
These moths inhabit woodland, fields, hill pasture and heaths.References:
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