Host plants:
The larvae feed in grasses. I recorded them in Brachypodium sylvaticum, Holcus azoricus and Sorghum halepense in Sao Miguel island.
Habitat:
Mesapamea storai inhabits especially grassy places in and around woodlands. I found larvae along a forest road and in young coniferous plantations together with those of Noctua atlantica.
Life cycle:
The larvae develop from autumn to spring and should be mature between February and April. They had been quite small to half-grown in December 2013. The infested stems are easily spotted due to wilting tip leaves. The moths occur in spring and summer.
Remarks:
Mesapamea storai is endemic to the Azores.