Host plants:
The caterpillar feeds on various Asteraceae (Carduus, Helichrysum, Carlina). In Fuerteventura, I found it on Carlina salicifolia.
Habitat:
Eublemma ostrina inhabits dry warm areas such as dunes, rocky grasslands, arid, rocky slopes and similar habitats.
Life cycle:
The moths fly in the south probably all year. In Europe they are found from April to October. I found the caterpillars quite close to the ground in cocoons at the plant base (Fuerteventura) as well as half a meter above ground in a Carlina flower in Tenerife (March 2012).
Remarks:
Eublemma ostrina occurs in Southern Europe, North Africa (including Canary Islands), in the Near and Middle East to Central Asia. In Central Europe and England only rare vagrants are recorded.