摘要：

Chinavia hilaris(Say),Euschistus servus(Say),Euschistus tristigmus(Say), andThyanta custator custator(F.) (Hemiptera: Pentatomidae) are serious pests of crops in the southeastern United States but little is known concerning their dispersal from noncrop hosts in woodlands into crops. This 2-yr study was conducted to investigate whether elderberry [Sambucus nigrasubsp.canadensis(L.) R. Bolli] in woodlands serves as a source of stink bugs dispersing into adjacent crops and to examine parasitism ofC. hilarisandE. servuseggs on this plant. Elderberry was a reproductive host for each of the four stink bug species; females oviposited on plants with subsequent nymphs feeding on elderberry and developing into adults.Anastatus mirabilis(Walsh & Riley) (Hymenoptera: Eupelmidae),Anastatus reduvii(Howard), andTrissolcus edessaeFouts (Hymenoptera: Scelionidae) were prevalent egg parasitoids ofC. hilarisbutA. reduviiwas the prevalent parasitoid ofE. servus. Newly developed stink bug adults were first detected on elderberry around mid-July. Then in late July and early August, as elderberry fruit senesced and cotton bolls became available, stink bugs began dispersing from elderberry into cotton based on recapture of stink bugs on cotton that had previously been marked on elderberry. In addition, in 2015, density ofC. hilaris,E. servus, andE. tristigmuswas higher in cotton with elderberry than in cotton without it. Over the study, economic threshold was reached for four of seven cotton fields. Elimination of elderberry in woodlands adjacent to cotton may be a viable management tactic for control of stink bugs in cotton.

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