Titlebook: Insect Life History Patterns; Habitat and Geograph Robert F. Denno,Hugh Dingle Conference proceedings 1981 Springer-Verlag New York Inc. 19

Organization

The Role of Host Plants in the Speciation of Treehoppers: An example from the , Complexd species may arise sympatrically (Bush 1969, 1975). Since much of the evidence is indirect, however, other workers still regard geographical isolation as a prerequisite for speciation in most groups of sexually reproducing animals (Mayr 1970).

Scleroderma

Alternative Life History Patterns in Risky Environments: An Example from Lacebugsies emerged: (1) the deterministic view based on the predictions of Mac Arthur and Wilson’s (1967) r- and K-selection, (2) the bethedging hypothesis organized by Stearns (1976) from the stochastic models of Murphy (1968) and Schaffer (1974), and (3) the balanced-mortality hypothesis, so termed by Price (1974).