Extended-development
Guides
Gynaephora rossii
Ross' tussock moth
Gynaephora rossii is a cold-adapted tussock moth distributed across the Holarctic tundra and alpine regions. The species is notable for its extended larval development period of 7–11 years and its ability to survive freezing temperatures. Adults are active during daylight hours in summer, with males actively searching for females while females are largely sedentary. The caterpillars feed primarily on Saxifraga species and certain willows.