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First host record, prey transport, and burrow excavation are described for Hesperopompilus sp., an undescribed, rare spider wasp (Hymenoptera: Pompilidae) from Texas. Taxonomic, ecological, and behavioral examination of the genus subsequently led to an investigation of the previously related Perissopompilus Evans and Xerochares Evans. Taxonomic, host preference, nesting behavior, and phylogenomic relationships of the three taxa are discussed along with those of Xenopompilus Evans. The molecular connection of Perissopompilus and Allochares Banks is supported by their common use of host species of Filistatidae.
ZooBank registration. urn:lsid:zoobank.org:pub:6718DF86-A516-4ED0-98DB-6D8C7846F5F5
The first host record for the North American spider wasp Cryptocheilus severini Banks (Hymenoptera: Pompilidae: Pepsinae) from Mazatlán, Sinaloa, México is introduced with pertinent observation information. The genus Cryptocheilus Panzer in North America is briefly described, its nesting habitat and prey transport outlined, and host specificity detailed.
ZooBank registration. urn:lsid:zoobank.org:pub:65404A9D-0B4C-4F7B-B8E2-0301EE922EF4
We present 112 new and unusual host records for 63 species and subspecies of Pompilidae (Hymenoptera) from the Western Hemisphere in modified taxonomic order according to the Synoptic Catalog of Hymenoptera (Krombein 1979). These records supplement those reported in a recent study by Kurczewski et al. (2020b). New and atypical genus and species host records are given for the genera Calopompilus Ashmead, Herbstellus Wahis, Pepsis Fabricius, Priocnessus Banks, Entypus Dahlbom, Pompilocalus RoigAlsina, Sphictostethus Kohl, Priocnemis Schiødte, Caliadurgus Fabricius, Epipompilus Kohl, Auplopus Spinola, Ageniella Banks, Eragenia Banks, Agenioideus Ashmead, Sericopompilus Howard, Poecilopompilus Ashmead, Tachypompilus Ashmead, and Priochilus (Fabricius). New host spider families are introduced for species of Calopompilus (Nemesiidae), Pepsis (Idiopidae, Pycnothelidae), Priocnessus (Euagridae), Entypus (Agelenidae), Ageniella (Theridiidae, Zoropsidae), Agenioideus (Theridiidae), Poecilopompilus (Salticidae), Tachypompilus (Anyphaenidae, Xenoctenidae, Pycnothelidae), Xerochares (Sparassidae), and Priochilus (Agelenidae). Curicaberis ?culiacans Rheims (Sparassidae), as prey of Xerochares expulsus (Schulz), is the first host record for this rare monotypic genus. Four new host spider families are reported from the Western Hemisphere for the first time: Idiopidae for Pepsis terminata, Pycnothelidae for Pepsis completa Smith and Tachypompilus mendozae (Dalla Torre), Euagridae for Priocnessus hurdi Dreisbach, and Xenoctenidae for T. mendozae. Pycnothelidae represents the first host record of a mygalomorph spider [Acanthogonatus ?incursus (Chamberlin)] for the worldwide genus Tachypompilus, based on more than 2500 host records. Amputation of the host spider’s legs and Ageniellini method of prey transport is highly unique in Poecilopompilus mixtus.
ZooBank registration. urn:lsid:zoobank.org:pub:48EC3DE6-45D1-40E2-8C4D-2D8788058CAC