Colocasia coryli (Linnaeus, 1758)

Host plants:
The larvae are polyphagous on deciduous wood. I found often caterpillars on Fagus sylvatica. In 2012, I observed repeatedly eggs and young larvae on Tilia.

Habitat:
Colocasia coryli is found in forests of all kinds, where deciduous trees are at least interspersed. Besides it is observed also in tree-rich areas out of the forest.

Life cycle:
The pupa hibernates. In most areas, Colocasia coryli has two generations from late March or April to early June and from July to August. At higher altitudes, from about 600m above sea level, probably an elongated generation from late April to July dominates, which is expected to be superimposed of individuals of a partial second generation. The caterpillars are particularly found in the late summer, but should already feed in June or earlier (own observations of eggs and larvae in June 2012).

Remarks:
Colocasia coryli is found in most parts of Europe and temperate Asia to Lake Baikal. It is typical of the beech forest zone and therefore restricted in Southern Europe to higher altitudes.