TWO NEW ORTHOPTERAN HOSTS OF NORTH AMERICAN POLIDEINI (DIPTERA: TACHINIDAE)

摘要

The Polideini are a moderately sized tribe in the subfamily Tachininae with 36 genera and about 140 described species (O'Hara 2002). All but a few of the species are restricted to the New World. The tribe was redefined and the genera and species of America north of Mexico were revised by O'Hara (2002). In that work, all known hosts of the polideine species of America north of Mexico were listed and they include the greatest range of arthropod taxa of any tribe in the Tachinidae: various Lepidoptera,Hymenoptera (Diprionidae), Orthoptera (Gryl-lidae and Raphidophoridae), Blattaria (Blattellidae), Chilopoda (?Geophilus sp.), Scorpiones (Vaejovidae), and Araneae (Antrodiaetidae) (O'Hara 2002). Two new orthopteran hosts of North American Polideini wererecently discovered by the junior author and are reported here. These new records are particularly noteworthy because orthopteran hosts of Tachinidae are not as well known as hosts in the major orders attacked, Lepidoptera, Coleoptera, Hymenoptera (Symphyta), and Hemiptera.