The neonicotinoid imidacloprid impairs the predatory performance and functional response of the jumping spider Helpis minitabunda (Araneae, Salticidae)

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  The neonicotinoid imidacloprid impairs the predatory performance and functional response of the jumping spider Helpis minitabunda (Araneae, Salticidae) Abstract The neonicotinoid imidacloprid can cause lethal and sublethal effects in non-target organisms, including impaired behavior, reduced fertility, disrupted locomotion, and reduced predatory performance in arthropods. Spiders are among the most abundant arthropod predators in terrestrial ecosystems, including agricultural ecosystems, yet the effects of neonicotinoids on the predatory function of jumping spiders remain poorly understood. The functional response of a predator describes how predation rates change with prey density and is key to understanding predator–prey dynamics. We tested whether acute exposure to a commercial formulation of imidacloprid at field-recommended concentrations alters the functional response of the Aussie bronze jumping spider, Helpis minitabunda (L. Koch, 1880). We compared the predation of treat...

Note on the morphology of Cymbiapophysa marimbai (Perafán & Valencia-Cuéllar, 2018) (Araneae: Theraphosidae)

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Note on the morphology of Cymbiapophysa marimbai (Perafán & Valencia-Cuéllar, 2018) (Araneae: Theraphosidae)

Abstract

Direct examination of the holotype of Cymbiapophysa marimbai (Perafán & Valencia-Cuéllar, 2018) by the author confirms the presence of a cymbial apophysis, a character overlooked in the original description of this species.

Peñaherrera-R., P. (2025b). Note on the morphology of Cymbiapophysa marimbai (Perafán & Valencia-Cuéllar, 2018) (Araneae: Theraphosidae). Revista Ibérica de Aracnología 46: 133-134. [publ. end of July]