Abstract

The predaceous habits of the wasps of the genus Cerceris have long been of interest to biologists. The prey of most of the species is limited to the coleopterous family Curculionidae (s.l.), a fact which was early discovered in Europe (Latreille, 1809;Bosc, 1813; Westwood, 183(3; et al.) and confirmed in the New World (Peckham and Peckham, 1898; Abbott, 1928; Rau, 1928; Williams, 1928; Cartwright, 1931; Krombein, 1936, et seq. ; Fisher, 1944; Strandtmann, 1945; Scullen, 1951). A bruchid-storing species is known from Central America (Rau, 1933), a primarily cerambycidhunter from the Philippines (Williams, 1919) and chrysomelid-hunters for the Philippines (Williams, l.e.) and North America (Strandtmann, 1945). The European Cerceris rybiensis Linn., unlike its more orthodox congeners, captures and stores bees of the genus Halictus (Walckenaer, 1817; Marchal, 1887), as do certain other European species (Adlerz, 1900, 1903; Ferton, 1901, 1905, et al).

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