Journal
AGRICULTURAL AND FOREST ENTOMOLOGY
Volume 3, Issue 1, Pages 19-27Publisher
WILEY-BLACKWELL
DOI: 10.1046/j.1461-9563.2001.00082.x
Keywords
Exotic plant; insect assemblages; native plant; Robinia neomexicana; Robinia pseudoacacia; species diversity
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1 Arthropods were collected on native locust, Robinia neomexicana A. Gray, and exotic Robinia pseudoacacia L. in northern Arizona over a 2-year period to determine the number of arthropod species and number of individuals present. 2 More arthropod species were found on the native (251) than on the exotic Robinia (174). 3 Greater species diversity was likewise found on the native than the exotic. The five most numerous insects collected each year accounted for 81% to 91% of the total number collected on the exotic and native Robinia in 1997 and 1998. Only 12 species occurred on both the native and exotic Robinia in both years. 4 These findings are discussed in the context of using exotic trees in plantations and ecological theory regarding rates of arthropod species accumulation on exotic hosts.
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