Host plants:
The young larvae usually feed on grasses (Poaceae). The larger ones also use herbs and others like broom.
Habitat:
Pseudenargia ulicis inhabits most often open scrub or open woodlands with grassy undergrowth, often adjacing to or interspersed with extensively managed pastures. I recorded the young to half-grown larvae on a north-facing slope with open oak scrub in about 1200m in the Sierra Nevada. They rested within grass tussocks and moss during daytime.
Life cycle:
The main development of the larvae takes place between February and April. The moths occur in early autumn from August to October.
Remarks:
Pseudenargia ulicis has an Atlanto-Mediterranean distribution: Morocco, Iberian Peninsula, locally also in S-France west of the Provence.