Description of two new Ctenichneumon Tomson species from southern Arizona, USA (Hymenoptera: Ichneumonidae: Ichneumoninae: Ichneumonini)

Abstract

Ctenichneumon Thomson, 1894 (Hymenoptera: Ichneumonidae: Ichneumoninae: Ichneumonini) is a moderately diverse parasitoid wasp genus with a broad distribution, including 14 described species in the Nearctic region. Here, I advance our knowledge of Nearctic Ctenichneumon by describing two new species, Ctenichneumon elaiodes, new species, and Ctenichneumon hesperis, new species, from the Huachuca Mountains in southeastern Arizona. Diagnostic notes and specimen images are provided to facilitate identification.