摘要：

The seasonal abundance of the three most important stink bug (Hemiptera: Pentatomidae) pests of soybean were studied weekly between 1977 and 1978 on both cultivated and uncultivated host plants by using a sweep-net. The sequence of black cherry,Prunus serotinaEhrhart, and elderberry,Sambucus canadensisL., in the study area allowed large populations of the green stink bug,Acrosternum hilare(Say), to develop before entering soybean,Glycine max(L.) Merrill. Populations ofA. hilarein soybean peaked during September and early October. Fourteen other breeding hosts were identified but were considered unimportant. The control of black cherry and elderberry would drastically reduce the importance ofA. hilarein soybean. Populations of the brown stink bug,Euschistus servus(Say), were sampled during the fruiting cycles of several hosts, including sowthistle,Sonchus oleraceousL., wheat,Triticum aestivaleL., peppergrass,Lepidium virginicumL., vetch,Viciaspp., partridge pea,Cassia faseiculataMichaux, wild lettuce,Lactuca canadensisL., and horseweed,Erigeron canadensisL. The availability of preferred hosts throughout the season may account for comparatively low populations in soybean. Important hosts of the southern green stink bug,Nezara viridula(L.), were wild radish,Raphanus raphinistrumL., and wheat in spring; soybean, cowpea,Vigna unguiculata(L.) Walpers, and showy crotalaria,Crotalaria spectabilisRoth, during summer and fall. Coffee senna,Cassia occidentalisL., was highly attractive to adults of bothAcrosternum hilareandNezara viridula. Several hosts ofThyanta accerraMcAtee,T. calceata(Say), andEuschistus tristigmus(Say) were also identified. Mark-recapture studies showed that adult populations ofAcrosternum hilareon black cherry andEuschistus servuson mullein,Verbascum thapsusL., frequently move among individual plants.

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