Seasonal Variation in Whole-Body Elemental Concentrations and Excreta Production of a Riparian Orb-Weaving Spider (Larinioides cornutus)

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  Seasonal Variation in Whole-Body Elemental Concentrations and Excreta Production of a Riparian Orb-Weaving Spider (Larinioides cornutus) ABSTRACT Predators influence nutrient cycling by assimilating elements from their prey and returning nutrients to ecosystems via excretion and discarded prey remains. However, seasonal variation in the contribution of predators to nutrient cycling remains poorly understood, particularly for terrestrial arthropod predators such as spiders. We examined temporal variation in whole-body elemental concentrations, excreta C and N concentrations, and cumulative excreta output in a riparian orb-weaving spider ( Larinioides cornutus ) across the growing season of 2024. Adult females were collected across seven sampling periods spanning mid-June to early October, and whole-body concentrations of macronutrients (carbon [C], nitrogen [N], phosphorus [P]) and multiple trace elements were quantified. Whole-body N and P concentrations, and several trace elemen...

New data on long-jawed spiders (Araneae, Tetragnathidae, Tetragnatha) from China

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New data on long-jawed spiders (Araneae, Tetragnathidae, Tetragnatha) from China

Abstract

Two species of Tetragnatha Latreille, 1804 are described, including one new species, Tetragnatha tricuspidata sp. nov. (♀♂) from Sichuan and Shaanxi Provinces, and one Chinese newly recorded species, Tetragnatha hirashimai Okuma, 1987 from Guangxi Zhuang Autonomous Region and Yunnan Province. Detailed descriptions, photographs, and a distribution map of both species are provided.

Liu C, Huang Z, Yin H, Xu X (2026) New data on long-jawed spiders (Araneae, Tetragnathidae, Tetragnatha) from China. ZooKeys 1269: 225-236. https://doi.org/10.3897/zookeys.1269.177630