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Enchenopa binotata Complex: Sympatric Speciation?

T. K. Wood and S. I. Guttman
Science
New Series, Vol. 220, No. 4594 (Apr. 15, 1983), pp. 310-312
Stable URL: http://www.jstor.org/stable/1690777
Page Count: 3
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Enchenopa binotata Complex: Sympatric Speciation?
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Abstract

Enchenopa binotata is a complex of six treehopper species that have diverged along host plant lines. When females were forced to oviposit on ``adopted'' host plants, few eggs were deposited. Fewer eggs hatched on ``adopted'' hosts and those that did hatch did so in response to the phenology of the ``adopted'' host. Mortality of nymphs on ``adopted'' hosts was substantially higher than on native hosts. These and other data support a sympatric model of speciation through shifts in host plants.

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