A new species of the genus Acinipe (Rambur, 1838) is described from Catalonia (in the northeast of the Iberian Peninsula). Acinipe eulaliae n. sp. was collected in an intact calcicolous rosemary scrub dominated by rosemary (Rosamarinus officinalis). A. eulaliae n. sp. is characterized by the rounded shape of its fastigium, concave in contact with the vertex, and by a penis that is slender and directed upwards. This new species is compared to the similar species A. deceptoria (Bolívar, 1878) and A. segurensis (Bolívar, 1908).