Heptamelus viitasaarii Liston, Mutanen & Prous, 2022

on ferns

parasite

The whitish larva bores in the rachis. A number of cavities are completely eaten out, separated by equally sized sections that are spared. Lighted from behind this results in a characteristic chain-like pattern.

host plants

polyphagous

Athyrium filix-femina; Onoclea struthiopteris.

distribution within Europe

Scandinavia.

references

Liston, Mutanen, Heidemaa, ao (2022a).