New species of Noctuidae from Afghanistan and adjacent territories. 1. The genera Euxoa Hubner [1821] 1816, Dichagyris Lederer 1857, Rhyacia Hubner [1821] 1816 and Chersotis Boisduval 1840 (Lepidoptera: Noctuidae, Noctuinae). Esperiana, 1 1990: 167-198. 169 [Zoological Record Volume 128]