Diversity of Ichneumonidae (Hymenoptera) at Cañón del Novillo, Victoria, Tamaulipas, Mexico

Abstract

Ichneumonidae is the family of wasps with highest diversity. The aim was to collect and to determine the ichneumonids in a spiny shrub of "Cañon del Novillo", Tamaulipas, Mexico. One Malaise trap was placed in that canyon during 2003. 758 specimens of 70 genera and 128 species were collected. The most common subfamilies found were Campopleginae (289) and Cryptinae (143). The most abundant genera were Venturia (128 specimens), Pimpla (84) and Casinaria (64) (36 % of the total). The genera with more species were Diapetimorpha and Carinodes (8 each), Eiphosoma (7) and Lymeon (5) (39 % of the total). Cosmopolitan genera were 34 %, Neotropical and nearctic 26 %, and Neotropical 14 %. More abundant species were Venturia sp.1 (111 specimens), Microcharops sp. (63), Casinaria sp.1 and Pimpla sanguinipes Cresson, 1872 (62 individuals each) (39 % of the total). The Margalef index of species richness was D _Mg = 19.306, the Shannon-Wiener diversity index was H'= 3.742 and the Pielou evenness index was J' = 0.564; the Sorensen index of similarity was IS = 0.541, in comparison with the ichneumonids from Altas Cimas, Tamaulipas, Biosphere Reserve "El Cielo".