Host plants:
The caterpillar is according to literature polyphagous to a certain degree, but prefers Galium. I found it in March 2009 on a swampy clearing on the eastern Swabian Alb in a depression on Galium palustre, which was partially covered by loose dead grasses.
Habitat:
Colostygia pectinataria inhabits forests and edge-rich, woody habitats of all kinds. It obviously has no high requirements.
Life cycle:
The caterpillar overwinters. The moths fly in cooler areas from late May to July in a single generation. In warmer areas, however, two generations from late April to June and from August to September are observed.
Endangerment factors:
Colostygia pectinataria is not endangered.
Remarks:
Colostygia pectinataria is widespread in Europe and temperate Asia to the Altai.