Abstract
AbstractInvestigation into the parasitoids of three predaceous and five phytophagous stink bugs in soybean fields yielded five species of parasitic Hymenoptera and two species of Diptera. Hymenopterous wasps (Telenomus pentatomus, T. podisi, Trissolcus basalis, T. eddessae, and Gryon sp.) emerged from egg masses. The scelionids, T. podisi and T. basalis were the most dominant oophagous wasps. Each attacked four different species of stink bugs. The phytophagous stink bug, Piezodorus guildinii was parasitized by three species of scelionids. More than 65% parasitism was recorded for P. guildinii and Euschistus servus in two different soybean fields. Dipterous parasitoids: one sarcophagid, Sarcodexia innota and one tachinid, Trichopoda pennipes were recorded from Nezara viridula adults only at the Honey Plant site. Their impact was minimal. No parasitoids were recorded for the four stink bugs, including N. viridula at the Green Acres site. Egg discoloration was generally more evident in parasitized phytophagous than in any predaceous bug eggs.ZusammenfassungParasitoide Hymenopteren und Dipteren aus zoo‐ und phytophagen Wanzen (Het., Pentatomidae) von Sojabohnen‐Feldern zweier Standorte in Alachua County, FloridaEs wurden aus 3 räuberischen und 5 phytophagen Pentatomiden zweier Sojabohnen‐Felder 5 Arten Hymenoptera und 2 Arten Diptera als Parasitoiden festgestellt. Als Eiparasiten traten auf: die Hymenopteren Telenomus pentatomus, T. podisi, Trissolcus basalis, T. eddessae and Gryon sp., wovon T. podisi and T. basalis dominierten. Die phytophage Wanze Piezodorus guildinii wurde von 3 Arten Scelionidae parasitiert. Von dieser Wanzenart sowie von Euschistus servus wurden jeweils mehr als 65% parasitiert. Als parasitoide Dipteren wurden festgestellt: Sarcodexia innota (Sarcophagidae) und Trichopoda pennipes (Tachinidae), beide nur an einem Standort und in geringer Zahl. Die Eiverfärbung war bei den parasitierten phytophagen Wanzen auffälliger als bei den zoophagen.
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