Narrowly oligolectic on Sedum (Crassulaceae). Wood & Cross (2017) illustrate a female Flavipanurgus kastiliensis (as Flavipanurgus ibericus) taking off from Sedum pedicellatum with a full pollen load
Cross & Wood (2018) report visitation of both males and females in northern Portugal to Spergularia (Caryophyllaceae). However, these visits were purely for nectar and no evidence of pollen collection was recorded. When it came to collecting pollen only species of Sedum (Crassulaceae) were used. These included Sedum anglicum, Sedum brevifolium, Sedum hirsutum, Sedum pedicellatum.