Incidence of Tachinid Parasitism of Several Stink Bug (Heteroptera: Pentatomidae) Species Associated with Soybean1

摘要: Parasitism by tachinids of 13 species pentatomids collected primarily in soybean fields from four locations Louisiana was evaluated during a 3-year study. determined examining the hosts externally for presence parasite eggs plus holding them laboratory and observing emergence. Parasite composition each pentatomid. Seasonal rates parasitism were pest species, Nezara viridula (L.), Acroslernum hilare (Say), Euschistus spp. Seven tachinid recovered. Only Trichopoda pennipes (F.) observed developing on N. . Supernumerary oviposition, with up to 19 25 single A. males, common this parasite. dissected determine incidence larvae, gonadal developmental stages males females most commonly parasitized, effects fecundity parasitized female hosts. Although significantly more deposited than females, percent larvae number per host not statistically different between sexes. Significantly bearing later compared earlier categories. The mean reproductively active reduced higher collections made cowpea soybean.