Zootaxa 4754 (1): 101–121 ISSN 1175-5326 (print edition) https://www.mapress.com/j/zt/ Article ZOOTAXA Copyright © 2020 Magnolia Press ISSN 1175-5334 (online edition) https://doi.org/10.11646/zootaxa.4754.1.10 http://zoobank.org/urn:lsid:zoobank.org:pub:A7BB9C87-F444-470F-8D74-7A588AD5B70E Biodiversity of the aculeate wasps (Hymenoptera: Aculeata) of the Arabian Peninsula: Chrysidoidea, Chrysididae PAOLO ROSA1, NEVEEN S. GADALLAH2 & DENIS J. BROTHERS3 1Via Belvedere 8/d, I-20881 Bernareggio (MB), Italy. E-mail:
[email protected] 2Entomology Department, Faculty of Science, Cairo University, Giza, Egypt. E-mail:
[email protected] 3School of Life Sciences, University of KwaZulu-Natal, Private Bag X01, Scottsville, 3209 South Africa. E-mail:
[email protected] Abstract An updated checklist of the Arabian species of Chrysididae is provided here. Three new synonymies (valid name first) are proposed: Chrysis mirifica Balthasar, 1953 = Chrysis dawahi Strumia, 2012 syn. nov.; Chrysis viridissima Klug, 1845 = Chrysis decolorata Strumia & Dawah, 2019 syn. nov.; Trichrysis longispina (Mocsáry, 1912) = Trichrysis flavicornis Strumia & Dawah, 2019 syn. nov.. Consequently, the list includes 124 identified species in 22 genera and three tribes, all in the subfamily Chrysidinae: Elampini (11 genera, 48 species), Chrysidini (9 genera, 73 species), and Parnopini (2 genera, 3 species). In addition, there is a single record of an unidentified species of the subfamily Cleptinae. Distributions, both on the Peninsula and extra-limital, are provided for each species and subspecies; 41 species (33%) are endemic to the Arabian Peninsula, as are five subspecies. Key words: Chrysidini, Elampini, Parnopini, distribution, synonymy Chrysididae Latreille, 1802 The Chrysididae (cuckoo, ruby-tailed, or gold wasps) are a relatively large, widely distributed family, currently with 2850 described species in 112 genera (of which 17 genera are extinct) (Rosa et al.