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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
Host records and nesting behavior of the Nearctic trapdoor spider-hunting spider wasps (Hymenoptera: Pompilidae) Calopompilus Ashmead and Priocnemissus Haupt (Pepsinae: Pepsini) and Aporus Spinola and Psorthaspis Banks (Pompilinae: Aporini) are reviewed, investigated, compared, and discussed. First time incidental trapdoor spider host records for Priocnemis (Priocnemissus) minorata Banks (Pepsinae: Pepsini), Anoplius (Lophopompilus) carolina (Banks) (Pompilinae: Pompilini), and Notocyphus dorsalis dorsalis Cresson (Notocyphinae: Notocyphini) are included, although they are not typical trapdoor spiderhunting spider wasp species. The Palearctic Aporus (Aporus) unicolor Spinola, A. (Aporus) bicolor Spinola and A. (Aporus) planiceps (Latreille) are referenced for comparison with Nearctic Aporus sensu stricto. Early 20th century papers on species of Aporus and Psorthaspis are revived. New information on nesting behavior of Nearctic trapdoor spider-hunting spider wasps is described and first host trapdoor spider records for Psorthaspis formosa (Smith), P. legata (Cresson) and P. mariae (Cresson) are documented. Potential Pompilidae species in the genera Calopompilus and Aporus are suggested for host trapdoor spider remains found in burrows with spider wasp eggs, larvae and cocoons (pupae) based on geographic distribution, habitat, spider species, trapdoor and burrow structure, wasp cocoon size, and wasp congeneric host records.
ZooBank registration. urn:lsid:zoobank.org:pub:A431FD0A-FD44-404B-ADAA-8AFFABB8AF10
Nesting behavior of the spider wasp Calopompilus pyrrhomelas (Walker) (Hymenoptera: Pompilidae)
(2023)
The nesting behavior of the spider wasp Calopompilus pyrrhomelas (Hymenoptera: Pompilidae: Pepsini) is described for the first time based on independent observations and photographic series from Oakland, Alameda County, CA; Denio, Humboldt County, NV; and Tamalpais-Homestead Valley, Marin County, CA, respectively. The three wasps captured, immobilized, and provisioned the spider’s own burrows with Calisoga longitarsis (Simon) (Nemesiidae) and Antrodiaetus montanus (Chamberlin and Ivie) (Antrodiaetidae).
ZooBank registration: urn:lsid:zoobank.org:pub:99349A59-147A-4970-AAC1-959F2ABCA1C1