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

Posted by
  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...

On small huntsman spiders (Araneae, Philodromidae) occurring in Guizhou and Hubei provinces, China

Posted by

 


On small huntsman spiders (Araneae, Philodromidae) occurring in Guizhou and Hubei provinces, China

Abstract

Spiders of the family Philodromidae Thorell, 1869 from Guizhou and Hubei provinces, China are studied. A total of three genera and seven species are reported and illustrated, comprising Sinodromus lanyue sp. nov. (newly recorded genus for Hubei), and all known species from both provinces: Philodromus auricomus L. Koch, 1878, P. guiyang Long & Yu, 2022, P. subaureolus Bösenberg & Strand, 1906, P. paiki Jang, Lee, Yoo & Kim, 2024 (the previously records of P. spinitarsis Simon, 1895 from Guizhou and Hubei are presumed to be misidentifications, and should belong to P. paiki), P. rufus Walckenaer, 1826 (new record for Hubei) and Tibellus japonicus Efimik, 1999 (new record for Hubei). Detailed descriptions, diagnoses, and illustrations of S. lanyue sp. nov. and P. guiyang are given, and the male of P. guiyang is diagnosed and described in English for the first time. The other five species are also re-illustrated. Their DNA barcodes were obtained for species delimitation, matching of sexes and future use.

Zhang J, Zhang C, Zhong Y (2025) On small huntsman spiders (Araneae, Philodromidae) occurring in Guizhou and Hubei provinces, China. ZooKeys 1240: 327-368. https://doi.org/10.3897/zookeys.1240.149456