We studied the gut contents of adults of 12 stonefly species of the superfamily Nemouroidea, belonging to 3 different families: Nemouridae (4 species), Capniidae (2 species), and Leuctridae (6 species) from the Sierra Nevada Mountains in Spain (southern Iberian Peninsula). For each species, we describe the male and female diet. After determining and quantifying the different components, we deduced that feeding is important among adults in this superfamily, and that the diet is varied, with cyanolichens and cyanophyceae being prominent, and hyphae and spores of Ascomycetes sometimes eaten, whereas pollen is amply consumed by some spring or spring–summer species.
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Vol. 93 • No. 2