A new species of Strotarchus Simon, 1888 from Mexico and description of the male of the type species S. nebulosus Simon, 1888 (Araneae: Cheiracanthiidae)

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  A new species of Strotarchus Simon, 1888 from Mexico and description of the male of the type species S. nebulosus Simon, 1888 (Araneae: Cheiracanthiidae) Abstract A new sac spider of the genus Strotarchus Simon, 1888, S. adrianae spec. nov., is described based on specimens of both sexes collected from Jalisco, Mexico. In addition, the previously unknown male of Strotarchus nebulosus Simon, 1888 is described for the first time. Orozco-Gil, M., Jiménez, M.-L. & Chamé-Vázquez, D. (2026) A new species of Strotarchus Simon, 1888 from Mexico and description of the male of the type species S. nebulosus Simon, 1888 (Araneae: Cheiracanthiidae). Zootaxa, 5821 (2), 263–273. https://doi.org/10.11646/zootaxa.5821.2.7

Aporus (Aporus) niger (Cresson), a seclusive spider wasp (Hymenoptera: Pompilidae: Pompilinae: Aporini) from eastern North America

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Aporus (Aporus) niger (Cresson), a seclusive spider wasp (Hymenoptera: Pompilidae: Pompilinae: Aporini)  from eastern North America

Abstract

There is no host or nesting information for Aporus (Aporus) niger (Cresson) (Hymenoptera: Pompilidae: 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-Mygalomorphae 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 vicinity of Ann Arbor, MI. Sphodros niger must, therefore, be the host spider species of Aporus niger in Wisconsin, lower Michigan, and southern Ontario.  

Insecta Mundi 2024(1094): December 20, 2024 (1-6), Aporus (Aporus) niger (Cresson), a seclusive spider wasp (Hymenoptera: Pompilidae: Pompilinae: Aporini) from eastern North America.
Frank E. Kurczewski