Pancalia leuwenhoekella is a moth in the family Cosmopterigidae.
Subspecies include:
This species is present in nearly all of Europe. In the east, the range extends to Asia Minor, the Caucasus, south-western Siberia and the Russian Far East. Pancalia leuwenhoekella prefers chalk and limestone habitats.
Pancalia leuwenhoekella has a wingspan of 10âÂÂ12 mm. The head and thorax are dark bronzy-metallic. Antennae usually with white subapical band. Forewings are deep orange, margins more or less blackish; a narrow interrupted fascia at 1/4, a costal spot before middle and another inwardly oblique at 3/4, a dorsal median spot and an erect tornal mark pale golden-metallic, blackish-edged; a whitish spot in cilia on posterior costal spot. Hindwings are rather dark bronzy-fuscous. This species is very similar to Pancalia schwarzella .
The larva is dull purple - reddish, segmental incisions and wrinkles pale brownish-ochreous; head pale yellowish-brown, darker-marked; plate of 2 transparent. Adults are on wing from April to June.
The larvae feed on Viola species, including Viola tricolor, Viola hirta and Viola canina.