Individual foraging specialization describes the phenomenon where conspecifics within a population of generalists exhibit differences in foraging behavior, each specializing on different prey types. Individual specialization is widespread in animals, yet is understudied in invertebrates, despite potential impacts to food web and population dynamics. Sceliphron caementarium (Hymenoptera: Sphecid...

The Australian species of the sphecid wasp genus Sphex are revised. Thirty-five species are recognized, of which 11 are new: Sphex argentatissimus, Sphex brevipetiolus, Sphex caelebs, Sphex corporosus, Sphex flammeus, Sphex fortunatus, Sphex gracilis, Sphex imporcatus, Sphex jucundus, Sphex latilobus and Sphex pretiosus. A dichotomous key covering all Australian species of the genus has been ge...

Sixty-four inactive nests of the solitary mud-daubing wasp Brachymenes dyscherus, reused by 5 inquiline species, were collected at Fazenda Santa Carlota, Cajuru, São Paulo, Brazil in 1995 and 1996. Monobia schrottkyi used 52 nests; among the 717 cells available for use, 502 were reused. The number of cells per nest varied from 3 to 24; 1 to 16 individuals emerged from September to April (154 ma...