Antivenom Therapy for Medically Important Spiders in the United States

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  Image Credit: Wikipedia Antivenom Therapy for Medically Important Spiders in the United States Luis A. Roque Arácnido Taxonomy Black widow envenomation caused by Latrodectus spp. can be managed with targeted antivenom therapy, whereas no equivalent approved therapy exists for brown recluse envenomation caused by Loxosceles spp. This contrast reflects the uneven development of spider-venom therapeutics in the United States. Introductory summary. In the United States, severe black widow envenomation can be treated with a targeted antivenom, whereas no comparable approved therapy exists for brown recluse envenomation (Clark et al., 1992; Swanson and Vetter, 2005). This disparity reflects differences in venom biology, therapeutic development, and the quality of available clinical evidence. Clinical Context Spiders occupy an important place in natural ecosystems, and only a small number are associated with medically significant bites in the United States. Most suspected spider bite...

A new species of Cyrtopholis Simon, 1892 from Montserrat, with notes on some other Caribbean theraphosines (Araneae: Theraphosidae)

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A new species of Cyrtopholis Simon, 1892 from Montserrat, with notes on some other Caribbean theraphosines (Araneae: Theraphosidae)

Abstract
A new species of the Caribbean genus Cyrtopholis Simon, 1892, Cyrtopholis montserrat sp. nov. is described from the United Kingdom Overseas Territory (UKOT) of Montserrat, based on both sexes. Cyrtopholis femoralis Pocock, 1903 is redescribed from the holotype male with the first figures of the genitalia of this Montserrat endemic spider presented. The endemic Saint Barthélemy species Cyrtopholis antillana Thorell, 1894 stat. rev. is revalidated from synonymy with Cyrtopholis bartholomaei (Latreille, 1832) and non-type specimens of both sexes are described and diagnosed. Cyrtopholis innocua (Ausserer, 1871), C. intermedia (Ausserer, 1875), C. ischnoculiformis (Franganillo, 1926), and C. obsoleta (Franganillo, 1935) are proposed as nomina dubia, and Cyrtopholis respinus Franganillo, 1935 is confirmed as a nomen nudum. 

Sherwood, Danniella & Questel, Karl. (2024). A new species of Cyrtopholis Simon, 1892 from Montserrat, with notes on some other Caribbean theraphosines (Araneae: Theraphosidae). Arachnology. 19. 1298-1307.