Host plants:
The larva feeds on Silene species. I recorded the larvae together with those of Hadena syriaca on Silene dichotoma in Samos.
Habitat:
Hadena gueneei inhabits dry, warm, open or semi-open landscapes. In Samos, types of habitat include maquis, pastures, rocky slopes and forest edges.
Life cycle:
The Pupa hibernates and moths occur in spring between April and June, according to altitude. The larvae have already been half-grown to mature in mid-May 2014. The larvae obviously occur more singly (which stands in contrast to many other Hadena), but this may depend on host plant density, too.
Remarks:
Hadena gueneei occurs from Croatia across the southern Balkans to Turkey and parts of Asia.