A1: Packer, L. 1983. The nesting biology and social organisation of Lasioglossum (Evylaeus) laticeps (Hymenoptera, Halictidae) in England. Insectes Sociaux. 30:367-375.
Abstract: An aggregation of Lasioglossum (Evylaeus) laticeps (Schenck) was discovered on the cliffs at Charmouth, Dorset, where nests were initiated in cracks in the clay soil. The cell clusters of both spring and summer broods were surrounded by a cavity which was enlarged as the number of cells increased. L. (E.) laticeps appears to have the most primitive social organisation of the four species of the L. (E.) malachurum species group for which data are available. Thus there is a high proportion of males in the first brood (24 %) and the morphological caste differences are slight: workers are, on average, 7 % smaller than the queens.