Association of the opposite sexes of Dryinus niger Kieffer, with notes on males of the other Western Palaearctic species of the same genus (Hymenoptera, Dryinidae) Author Ødegaard, Frode Norwegian University of Science and Technology (NTNU), Department of Natural History, NO- 7491 Trondheim, Norway Department of Plant Protection, College of Agriculture, University of Zabol, 98615 - 538, I. R. Iran Author Rakhshani, Ehsan Author Olmi, Massimo Tropical Entomology Research Center, Via De Gasperi 10, I- 01100 Viterbo, Italy text Zootaxa 2023 2023-05-04 5278 1 155 162 http://dx.doi.org/10.11646/zootaxa.5278.1.8 journal article 10.11646/zootaxa.5278.1.8 15258142-1165-4244-8434-c85e0249378b 1175-5326 7895160 BF1678C5-0CC3-4EB7-814B-21706DC959D0 Following the above description of the male of D. niger , the key to the males of the Western Palaearctic species of Dryinus published by Olmi (1999) and modified by Derafshan et al. (2021) , can be changed by replacing couplet 1 as follows: 1. Antenna very slender, antennomere 3 at least 6.5 × as long as broad ( Figs 2C , 4A , 5A ).............................. 2 - Antenna less slender, antennomere 3 less than 6.0 × as long as broad ( Figs 6 , 7D ).................................. 3 2. Mesoscutum completely granulate, not reticulate rugose ( Figs 4B, C ); forewing with Radial sector (Rs) of 2r-rs&Rs vein much longer than second radial cross (2r-rs) (about 20:10) ( Fig. 4C )................................. D. collaris (Linnaeus) - Mesoscutum completely reticulate rugose or granulate and reticulate rugose ( Figs 2A , 5B, D ); forewing with Radial sector (Rs) of 2r-rs&Rs vein slightly longer than second radial cross (2r-rs) (about 10:9) ( Figs 1A , 2B ) or slightly shorter than second radial cross (2r-rs) (about 8:9) ( Fig. 5D )....................................................................... 2a 2a. Head black, except mandible testaceous and clypeus brown ( Fig. 1B )................................ D. niger Kieffer - Head testaceous, except occiput and part of vertex black ( Fig. 5C )................... D. tamaricicola Rakhshani & Olmi