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25 July 2022 Variation in webs of Linyphia simplicata (F. O. Pickard-Cambridge, 1902) and Neriene coosa (Gertsch, 1951) (Araneae, Linyphiidae)
William G. Eberhard
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Abstract

Linyphiid webs have often been characterized as dense horizontal sheets suspended in aerial tangles. Recent observations indicate that several web traits vary considerably between species, but nearly all information comes from small samples of webs, and little attention has been given to intra-specific variation. This paper documents the intra-web and intra-specific variation in several web traits in Linyphia simplicata, and makes brief comparisons with the webs of Neriene coosa. The objective is to provide perspective for other comparisons of the web designs in linyphiid taxa that are based on small samples. Some traits were relatively uniform and did not differ between the species; others, especially some measures of the tangles above and below sheets, were more variable but nevertheless differed significantly between the species. Two traits not previously documented in linyphiid webs occurred on both species: a central area of the sheet with larger holes; and lower densities of lines near the outer edges but higher, uniform densities in the central areas of sheets. A third new trait, objects projecting through sheets, occurred only in N. coosa.

William G. Eberhard "Variation in webs of Linyphia simplicata (F. O. Pickard-Cambridge, 1902) and Neriene coosa (Gertsch, 1951) (Araneae, Linyphiidae)," Arachnology 19(2), 527-536, (25 July 2022). https://doi.org/10.13156/arac.2022.19.2.527
Published: 25 July 2022
KEYWORDS
sheet webs
taxon-specificity of web design
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