Chemical composition of the leaf oils from two morphotypes of Psidium cattleyanum at four phenological stages.

The chemical composition of volatile oil extracted from leaves of two morphotypes of Psidium cattleyanum Sabine from southern Brazil was evaluated at four phenological stages. In addition, plant material was evaluated at four different locations of the Planalto Serrano Region of Santa Catarina state, Brazil. Major components found were: 1,8-cineole, α-pinene, α-eudesmol, (E)-caryophyllene and p-cymene in red morphotype whereas 1,8-cineole, α-pinene, myrcene, (E)-caryophyllene and valerianol were found in the yellow morphotype. The differences observed in the chemical composition in red and yellow morphotypes may help in the differentiation between the two morphotypes in the absence of fruits. Also, important differences were observed mainly for 1,8-cineole and α-pinene percentage at different phenological stages.

[First record of Telenomus podisi (Ashmead) and Trissolcus urichi (Crawford) (Hymenoptera: Scelionidae) parasitizing eggs of the rice stem bug, Tibraca limbativentris (Stål) (Hemiptera: Pentatomidae), in Santa Catarina, Brazil]. / Primeiro relato de ocorrência de Telenomus podisi (Ashmead) e Trissolcus urichi (Crawford) (Hymenoptera : Scelionidae) como Parasitóides de ovos do Percevejo-do-Colmo-do-Arroz, Tibraca limbativentris (Stål) (Hemiptera: Pentatomidae), em Santa Catarina.

We report the first occurrence of Telenomus podisi (Ashmead) and Trissolcus urichi (Crawford) parasitizing eggs of the Rice Stem Bug, Tibraca limbativentris (Stål), in Santa Catarina, Brazil. These species have a high potential of parasitization, pointing them as an alternative for biological control of T. limbativentris.

Primeiro relato de ocorrência de Telenomus podisi (Ashmead) e Trissolcus urichi (Crawford) (Hymenoptera: Scelionidae) como Parasitóides de ovos do Percevejo-do-Colmo-do-Arroz, Tibraca limbativentris (Stål) (Hemiptera: Pentatomidae), em Santa Catarina / First record of Telenomus podisi (Ashmead) and Trissolcus urichi (Crawford) (Hymenoptera: Scelionidae) Parasitizing eggs of the Rice Stem Bug, Tibraca limbativentris (Stål) (Hemiptera: Pentatomidae), in Santa Catarina, Brazil

We report the first occurrence of Telenomus podisi (Ashmead) and Trissolcus urichi (Crawford) parasitizing eggs of the Rice Stem Bug, Tibraca limbativentris (Stål), in Santa Catarina, Brazil. These species have a high potential of parasitization, pointing them as an alternative for biological control of T. limbativentris.