A REVISION OF THE NEW WORLD EXORISTINI (DIPTERA: TACHINIDAE): I. PHOROCERA SUBGENUS PSEUDOTACHINOMYIA

Abstract The genus Phorocera Robineau-Desvoidy, 1830, is shown to be holarctic, divisible into a palaearctic element, the subgenus Phorocera, with three species, and its nearctic sister-group, the subgenus Pseudotachinomyia Smith. 1917, with eight, of which four, angustiforceps, auriceps, convexa and exigua, are described as new. P. webberi Smith, the type species of Pseudotachinomyia, is removed from the synonymy of slossonae (Townsend) and longiforceps Brooks is synonymized with slossonae. Keys, descriptions and figures are provided for the adults and eggs of the eight nearctic species, and oviposition in P. webberi is described. Relationships of Pseudotachinomyia with the s.g. Phorocera and with other exoristine genera are discussed.