probably parasitic Phoridae is sitting on protective hull
https://en.wikipedia.org/wiki/Psyche_casta Originally from the Old World, they have been introduced in North America. It is a nocturnal moth. The wingspan of the males ranges from 12 to 15 mm. They have hairy, brown-metallic shiny wings. The flight time ranges from May to July. The grub like females have legs but do not have wings and are yellowish or light brown, except for some dark brown back plates, they remain in the case. The host plants are from the groups: Poaceae, birch, willow, poplar and Vaccinium. The caterpillars make a protective hull from grass.
Psychinae · mažieji maišuočiai
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