Tersilochinae (Hymenoptera: Ichneumonidae) of Costa Rica, part 1. Genera Allophrys Forster, Barycnemis Forster and Meggoleus Townes

Abstract

The Costa Rican fauna of three tersilochine genera, Allophrys Forster, Barycnemis Forster and Meggoleus Townes, is revised. Seven species, A. barycnemica sp. nov., A. bribria sp. nov., A. compressor sp. nov., A. hansoni sp. nov., A. megafrons sp. nov., A. noyesi sp. nov. and B. costaricensis sp. nov., are described as new. Allophrys divaricata Horstmann, M. spirator Townes and two groups of undescribed species of Allophrys are newly recorded from Costa Rica. A key to the Costa Rican species of Allophrys is provided. Finger-shaped sensory flagellar structures, previously known in two European species of Phradis Forster, are registered in all Costa Rican species of Allophrys, Barycnemis and Meggoleus.