Northwest Naturalist

Sphecodes (arvensiformis) “Cuckoo Sweat Bee” Halictidae
on Lomatium “Biscuit Root” Apiaceae

Missoula, MT
May 13, 2014
Robert Niese

Sphecodes bees are cleptoparasitic, cuckoo-like bees that lay their eggs in the nests of other sweat bees.