Adult Activity of Ground-Surface Spiders in Arid-Grassland and Pinyon- Juniper Associations in Southwestern New Mexico
Abstract
Maturity and adult activity data were accumulated for 21 species of ground-surface spiders from 2 locations in the pinyon-juniper life zone and 2 in the arid-grasslands of southwestern New Mexico. Web-building Psilochorus species were found to be the most dominant ground-surface adult spiders in both associations. The 2 species concerned were not strongly seasonal in maturity and adult activity indicating that they either matured erratically or the adults were long lived. Except for Herpyllus propinquus Keyserling, other less dominant or prevalent species were found to vary seasonally in periods of maturity and adult activity. Some were also restricted to 1 or the other of the 2 plant associations. A few were restricted to 1 plot.Downloads
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