Abstract

There is no host or nesting information for Aporus (Aporus) niger (Cresson) (Hymenoptera: Pom¬pilidae: Pompilinae: Aporini). Wasps in the tribe Aporini and, specifically, the genus Aporus Spinola capture only mygalomorph spiders (Araneae: Mygalomorphae). Purse-web spiders of the genus Sphodros Walckenaer (Araneae: Mygalomorphae: Atypidae) are the most likely host spiders of A. (A.) niger based on Aporus-Myga¬lomorphae parasitoid-host relationship, Aporus comparative morphology, geographic and habitat sympatry, seasonal synchrony, abundance, and retreat confinement. Aporus niger is the only aporine wasp in Wisconsin, lower Michigan, and southern Ontario. Sphodros niger is the only mygalomorph spider in Wisconsin, lower Michigan, and southern Ontario, except for the Antrodiaetus unicolor complex (Antrodiaetidae) in the vicin¬ity of Ann Arbor, MI. Sphodros niger must, therefore, be the host spider species of Aporus niger in Wisconsin, lower Michigan, and southern Ontario.

References

• Beatty JA. 1986. Web structure and burrow location of Sphodros niger (Hentz) (Araneae, Atypidae). Journal of Arachnology 14: 130. 
• BioGator. 2024. BioGator | University of Florida Collection Search Parameters. University of Central Florida Stuart M. Fullerton Collection of Arthropods. Available at https://biogator.org/collections/list.php?usethes=1&taxa=22529.  (Last accessed 9 August 2024.)
• Bradley JC. 1944. A preliminary revision of the Pompilidae of the Americas exclusive of the tribe Pompilini (Hymenoptera: Pompilidae). Transactions of the American Entomological Society 70: 23–157. 
• Coyle FA, Shear WA. 1981. Observations on the natural history of Sphodros abboti and Sphodros rufipes (Araneae, Atypidae), with evidence for a contact sex pheromone. Journal of Arachnology 9: 317–326. 
• Day MC. 1988. Spider wasps. Hymenoptera: Pompilidae. Handbooks for the Identification of British Insects 6: 1–60. 
• Early J. 2013. Downland–other invertebrates. Available at http://www.natureconservationimaging.com/Pages/nature_conservation_imaging_downland1_invertebrates.php.  (Last accessed 26 July 2024.)
• Edwards R, Edwards E. 1990. Observations on the natural history of a New England population of Sphodros niger (Araneae, Atypidae). Journal of Arachnology 18: 29–34. 
• Else GR. 1975. Aporous [sic] femoralis (Vander Linden) (Hym. Pompilidae) in Hampshire and the Isle of Wight and a record of its prey in Britain. Entomologist’s Monthly Magazine 110: 82. 
• Evans HE. 1966. A revision of the Mexican and Central American spider wasps of the subfamily Pompilinae (Hymenoptera: Pompilidae). Memoirs of the American Entomological Society 20: 1–442. 
• Gerth M, Mayer R, Hering L, Wolf R, Schaffer S, Bleidorn C. 2012. Zur Stechimmenfauna (Hymenoptera: Aculeata) des Bienitz in Leipzig. Ampulex 5: 1–14. 
• Gertsch WJ, Platnick NI. 1980. A revision of the American spiders of the family Atypidae (Araneae, Mygalomorphae). American Museum Novitates 2704: 1–39. 
• Hoffman RL. 2010. Purse-web spiders, genus Sphodros, in Virginia (Mygalomorphae: Atypidae). Banisteria 36: 31–38. 
• Krombein KV. 1979. Family Pompilidae. p. 1523–1570. In: Krombein KV, Hurd PD Jr., Smith DR, Burks BD (eds.). Catalog of Hymenoptera in America north of Mexico. Volume 2, Apocrita (Aculeata). Smithsonian Institution Press; Washington, DC. 2209 p 
• Kurczewski FE. 1999. Comparison of spider wasp faunas from two ecologically distinct sites in Erie County, Pennsylvania (Hymenoptera: Pompilidae). Journal of the Kansas Entomological Society 72: 339–360. 
• Kurczewski FE, Kurczewski EJ. 1987. Northern distribution records for some Nearctic Pompilidae (Hymenoptera). Great Lakes Entomologist 20: 81–84. 
• Kurczewski FE, West RC. 2022. Host selection and nesting behavior of Nearctic trapdoor spider-hunting spider wasps (Hymenoptera: Pompilidae: Pepsinae, Pompilinae). Insecta Mundi 0959: 1–24. 
• Leavengood JM Jr, Waichert C, Rodriguez J. 2011. A distributional checklist of the spider wasps (Hymenoptera: Pompilidae) of Florida. Insecta Mundi 0161: 1–8. 
• Moler PE, Stevenson DJ, Mansell BW, Mays JD, Lee CW. 2020. Distribution and natural history of purseweb spiders, Sphodros spp. (Araneae: Mygalomorphae: Atypidae), in Florida, Georgia, and Alabama. Southeastern Naturalist 19: 663–672. 
• Muma MH, Muma KE. 1945. Biological notes on Atypus bicolor Lucas (Arachnidae). Entomological News 56: 122–126. 
• Stevenson DJ. 2018. Georgia’s Purseweb and Trapdoor Spiders. Available at https://georgiawildlife.com/sites/default/files/wrd/pdf/education/GeorgiasPursewebandTrapdoorSpiders.pdf.  (Last accessed 8 August 2024.)
• Swanson DR. 2010. On the Mygalomorphae (Araneae) of Michigan. The Great Lakes Entomologist 43: 94–100. 
• Wahis R, Durand F. 2012. Sur les Aporus d’Europe et d’ Afrique du nord avec descriptions des femelles d’ Aporus alanni sp. n., foucarti sp. n. et lacteipennis (Priesner, 1955) comb. n. (Hymenoptera: Pompilidae, Pompilinae, Aporini). Arvernsis—1er semestre—N° 59–60: 1–32.