The Life Cycle, Habitat and Variation in Selected Web Parameters in the Spider, Nephila clavipes Koch (Araneidae)

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Abstract
A field study of the ecology and natural history of the spider N. clavipes was conducted between May 1972-Sept. 1973. The habitat of N. clavipes on the Texas Coastal Plain [USA] is described and its life cycle, monthly variation in selected web parameters and abundance in a study area. Height of the web aboveground, magnetic orientation, degree of slant and density of weblines all exhibited consistent changes during the year. Numerical density of the spiders was approximately constant during the year, suggesting that adult female Nephila are relatively immune to predation and that there are only a finite number of suitable web sites within the study area.

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