First catalog of spiders of Egypt (Araneae)

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  First catalog of spiders of Egypt (Araneae) Abstract This study provides a comprehensive catalog of the spider fauna of Egypt, comprising 389 species assigned to 197 genera and 40 families. For each species, all published locality records are compiled and accompanied by complete bibliographic references. The dataset has been carefully reviewed and critically evaluated in light of the most recent taxonomic and faunistic information. Among the recorded species, 55 (14.13%) are currently known only from Egypt and are thus considered endemic. Based on the World Spider Catalog (2026), 28 species are treated as nomina dubia, 23 species lack confirmed records from Egypt, which is not correct, 10 have to be omitted from the Egyptian list and 8 are species inquirenda. Despite the relatively high number of documented species, the Egyptian araneofauna remains insufficiently explored. Given the country’s ecological diversity and biogeographical position, further research is expected to signi...

Influence of the ABO system on the hemolytic activity of medically relevant Loxosceles venoms in Brazil

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Influence of the ABO system on the hemolytic activity of medically relevant Loxosceles venoms in Brazil

Abstract

Envenomation by Loxosceles spiders is an important public health issue, frequently associated with hemolysis. Although the ABO blood group system influences various diseases, its role in loxoscelism is poorly understood. This study evaluated the effect of ABO types on hemolysis induced by L. intermedia, L. gaucho, and L. laeta venoms, with and without complement. Blood type B erythrocytes showed reduced susceptibility to direct hemolysis, suggesting a potential protective effect and offering new insights for improving loxoscelism management.
Beltramino, M., Jiacomini, I. G., Prado-Costa, B., Fonseca, M. F., Degraf Muzzi, J. C., Ferreira de Moura, J., Minozzo, J. C., Becker-Finco, A., & Alvarenga, L. M. (2026). INFLUENCE OF THE ABO SYSTEM ON THE HEMOLYTIC ACTIVITY OF MEDICALLY RELEVANT LOXOSCELES VENOMS IN BRAZIL. Toxicon, 108994. https://doi.org/10.1016/j.toxicon.2026.108994