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...

The first known troglomorphic, eyeless spider wasp (Hymenoptera: Pompilidae): Troglopompilus miracaecatus gen. et sp. nov. from the Nullarbor Caves, Western Australia

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The first known troglomorphic, eyeless spider wasp (Hymenoptera: Pompilidae): Troglopompilus miracaecatus gen. et sp. nov. from the Nullarbor Caves, Western Australia

Abstract

Surveys of caves of the Nullarbor Plain, Western Australia, revealed a remarkable assemblage of exceptionally well-preserved mummified arthropods, comprising Araneae, Blattodea, Coleoptera and Chilopoda, all of which exhibit high levels of troglomorphism, lacking eyes and showing a number of other adaptations. Of note, this arthropod assemblage also included a pompilid wasp which is eyeless and brachypterous and unlike any member of the family known globally. Here, we describe this amazing wasp as Troglopompilus miracaecatus gen. et sp. nov., and discuss its remarkable morphology and possible affinities and biology.

Rodriguez, J., Austin, A. D., & Marsh, J. R. (2026). The first known troglomorphic, eyeless spider wasp (Hymenoptera: Pompilidae): Troglopompilus miracaecatus gen. Et sp. Nov. From the Nullarbor Caves, Western Australia. Austral Entomology, 65(2), e70061. https://doi.org/10.1111/aen.70061