Abstract
The biology of D. curvicercus Uvarov (Orthoptera: Acrididae) was studied. D. curvicercus was found in both the dry vegetation of sandy stretches of the coastal plain and among the small shrubs, low grasses, and annuals interspersed with patches of bare ground in Galilee, Samaria, and Judea. Specimens from the coastal plain were markedly larger, and the number of eggs per pod was significantly greater than in the Jerusalem population. The species was found to be univoltine, with an embryonic diapause in the egg stage, and a reproductive diapause in the adult stage. The former diapause could be broken by certain conditions of exposure to cold. Nymphs appeared in nature in April, and adults died off in November.
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