Thermal Requirements for Development, Population Trends, and Parasitism of Azalea Lace Bug (Heteroptera: Tingidae)

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Abstract:

Duration of development of azalea lace bug, Stephanitis pyrioides (Scott), measured at six temperatures ranged from ""22d at 30°C to 97 d at 15°C.Development was not successful at 33°C. Estimated threshold temperatures (To) and calculated thermal unit requirements (K) for development of egg, nymphal, and complete development were, respectively: 10.2, 12.2, 11.2°C and 213.1,179.2,394 degree-days (DD). Four generations of azalea lace bug occurred in central Georgia. Phenology of the first generation developing from overwintered eggs was closely predicted in the landscape using these parameters. A mymarid parasitoid, Anagrus sp., emerged from eggs collected at intervals during the season. Greatest parasitoid-induced mortality was observed in the overwintering generation.

Document Type: Research Article

Publication date: June 1, 1992

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