Andrena agilissima is an oligolectic species, feeding only on pollen of a few genera of Cruciferous vegetables (Brassicaceae species, as Brassica napus, Brassica rapa, Raphanus raphanistrum, Barbarea vulgaris and Sinapis species).
Of these Marsh Fritillary (Euphydryas aurina), High Brown Fritillary (Argynnis cydippe), Wood White (Leptidea sinapis) and Brown Hairstreak (Thecla betulae) all have a local distribution in Somerset.