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...

Isometrus wenjieae sp. n., a new species of the subgenus Reddyanus from China (Scorpiones: Buthidae)

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Isometrus wenjieae sp. n., a new species of the subgenus Reddyanus from China (Scorpiones: Buthidae)

Abstract. – Isometrus (Reddyanus) wenjieae sp. n. from Guangdong Province (China), is described and properly illustrated. The new species shows a combination of distinctive morphological characters: (i) a total length ranging from 30.6 mm to 43.9 mm, (ii) pectinal teeth count 13 to 16 in males and 14 to 15 in females, (iii) fulcra present (iv) legs with markings, (v) ventral side of the subaculear tooth with two granules. A distribution map for the members of subgenus Reddyanus in China is equally provided.

Huang J., Liu Z. ＆ Di Z., 2025. – Isometrus wenjieae sp. n., a new species of the subgenus Reddyanus from China (Scorpiones: Buthidae). Faunitaxys, 13(49): 1 – 8. https://doi.org/10.57800/faunitaxys-13(49) - https://zoobank.org/3B7F1087-F734-4291-AA92-8CF86D1C5B12