E. actaeata has a wingspan of 19–24 mm,[3] with broader wings than is typical for Eupithecia species.[2] Both wing pairs are grey,[2] brownish-grey,[3] or brown,[4] with somewhat paler hind- than forewings.[3][2]
Subspecies
Eupithecia actaeata actaeata
Eupithecia actaeata praenubilata Inoue, 1958
Distribution
Europe
Within Europe, E. actaeata is found France eastwards, where it is widely distributed in northern, central and eastern Europe,[3] and has only local distribution south of the Alps.[5]
E. actaeata has been found at altitudes from sea level up to 2000m in Europe[3] and between 1600 and 3000m in China.[2] It is found in forests with a presence of Actaea spicata (baneberry),[3][5] its main host plant. In north-western Europe, it is found predominantly in closed spruce forests.[7] In Asia, it has been found on another species of Actaea.[2] Other known host plants are Thalictrum aquilegiifolium and Thalictrum flavum.[3]Viburnum opulus has also been mentioned in scientific literature,[3] but might be erroneous.[8]
There are two generations per year with adults on wing from the end of May to August. Larvae can be found from June to September. It overwinters as a pupa.
^ abWagner, Wolfgang. "Eupithecia". European Lepidoptera and their ecology. Retrieved 22 January 2023.
^Mironov, Vladimir; Galsworthy, Anthony Charles (5 March 2014). "A survey of Eupithecia Curtis, 1825 (Lepidoptera, Geometridae, Larentiinae) in Mongolia with descriptions of two new species". Zootaxa. 3774 (2): 101–130. doi:10.11646/zootaxa.3774.2.1. PMID24871410.