Fertility life table of Trichogramma pretiosum and Trichogramma acacioi on eggs of Anagasta kuehniella at different temperatures

Trichogramma é um dos gêneros de insetos mais importantes no controle biológico. Este trabalho avaliou o potencial de parasitismo de duas espécies de Trichogramma, em ovos de Anagasta kuehniella, por meio da tabela de vida de fertilidade sob temperaturas entre 15°C e 35°C. Essas espécies foram coletadas no Estado do Espírito Santo parasitando ovos do desfolhador do abacateiro Nipteria panacea. Trichogramma pretiosum e T. acacioi mostraram potencial de reprodução em temperaturas entre 15°C e 35°C, podendo ser utilizados em futuros programas de controle biológico de N. panacea em plantios de abacate.Species of the Trichogramma genus are among the most important ones for biological control. The objective of this research was to evaluate parasitism potential of two species of Trichogramma on eggs of Anagasta kuheniella through life fertility table, at temperatures between 15oC and 35oC. These species were collected in the State of Espírito Santo parasitising eggs of the avocado defoliator Nipteria panacea. Trichogramma pretiosum and T. acacioi showed adequate reproductive potential between 15oC and 35oC which indicates possibilities of using them in biological control programs in avocado plantations

Plants of an Eucalyptus clone damaged by Scolytidae and Platypodidae (Coleoptera)

O objetivo deste trabalho foi avaliar o ataque de Scolytidae e Platypodidae em talhão de clone Eucalyptus grandis x Eucalyptus urophylla na região de Montes Claros, Estado de Minas Gerais, Brasil. Discos de madeira com galerias desses insetos foram retirados de 15 árvores de eucalipto entre 0,5 e 1,5 m de altura. Após a coleta deste material, as árvores atacadas foram queimadas. Os indivíduos da ordem Coleoptera obtidos desses discos foram identificados como Premnobius cavipennis, Premnobius ambitiosus e Dryocoetoides cristatus (Coleoptera: Scolytidae) e Euplatypus parallelus (Coleoptera: Platypodidae). O ataque de D. cristatus, espécie nativa do Brasil, ao eucalipto ainda não havia sido relatado, o que mostra sua adaptação a essa planta.Species of Scolytidae and Platypodidae were evaluated in a plantation using a clone of Eucalyptus grandis x Eucalyptus urophylla in the State of Minas Gerais, Brazil. Wood disks with galleries were taken from 15 eucalyptus trees between 0.5 and 1.5 m height. After collection, all trees attacked were burned. Woodborers obtained from these disks were identified as Premnobius cavipennis, Premnobius ambitiosus, Dryocoetoides cristatus (Coleoptera: Scolytidae) and Euplatypus parallelus (Coleoptera: Platypodidae). This is the first report of D. cristatus, a Brazilian native species, damaging eucalyptus, which shows its adaptation to this plant

Fertility life table of Trichogramma pretiosum and Trichogramma acacioi on eggs of Anagasta kuehniella at different temperatures

Species of the Trichogramma genus are among the most important ones for biological control. The objective of this research was to evaluate parasitism potential of two species of Trichogramma on eggs of Anagasta kuheniella through life fertility table, at temperatures between 15ºC and 35ºC. These species were collected in the State of Espírito Santo parasitising eggs of the avocado defoliator Nipteria panacea. Trichogramma pretiosum and T. acacioi showed adequate reproductive potential between 15ºC and 35ºC which indicates possibilities of using them in biological control programs in avocado plantations

Plants of an Eucalyptus clone damaged by Scolytidae and Platypodidae (Coleoptera)

Species of Scolytidae and Platypodidae were evaluated in a plantation using a clone of Eucalyptus grandis x Eucalyptus urophylla in the State of Minas Gerais, Brazil. Wood disks with galleries were taken from 15 eucalyptus trees between 0.5 and 1.5 m height. After collection, all trees attacked were burned. Woodborers obtained from these disks were identified as Premnobius cavipennis, Premnobius ambitiosus, Dryocoetoides cristatus (Coleoptera: Scolytidae) and Euplatypus parallelus (Coleoptera: Platypodidae). This is the first report of D. cristatus, a Brazilian native species, damaging eucalyptus, which shows its adaptation to this plant

Occurrence of Quesada gigas on Schizolobium amazonicum trees in Maranhão and Pará States, Brazil Ocorrência de Quesada gigas em Schizolobium amazonicum em municípios do Maranhão e do Pará

An infestation of Quesada gigas Olivier (Hemiptera: Cicadidae) on "paricá" Schizolobium amazonicum (Huber) Ducken (Fabales: Fabaceae) was reported in the Municipalities of Itinga, Maranhão State and Paragominas, Pará State. Nymphs of this insect on roots and adults and exuvias on trunks of the plant were observed. Exit holes of nymphs in the soil were also observed. The occurrence of Q. gigas on S. amazonicum shows the damage potential of this species and the necessity of developing integrated management programs for species of this group, specially in reforested areas with "paricá".<br>Há relatos sobre a infestação de Quesada gigas Olivier (Hemiptera: Cicadidae) em paricá Schizolobium amazonicum (Huber) Ducken (Fabales: Fabaceae) nos municípios de Itinga, Estado do Maranhão e Paragominas, Estado do Pará. Observaram-se ninfas nas raízes e adultos e exúvias nos troncos da planta. Orifícios no solo, de saída de ninfas móveis dessa cigarra também foram verificados. A ocorrência de Q. gigas em S. amazonicum mostra o potencial de danos da espécie e a necessidade de se desenvolver programas de manejo integrado de espécies desse grupo, principalmente Q. gigas, em áreas reflorestadas com paricá