The black fly, Aleurocanthus woglumi Ashby, is an important pest of citrus in Brazil causing damage that leads to significant economic losses. In this work, we sought to test extracts of Mimosa tenuiflora, a typical plant of the Brazilian caatinga, as an alternative for use in controlling the pest.We used extracts at concentrations of 3, 5, 7 and 10 mg L -1 . The nymphs were exposed by immersing the leaf in the solution and kept in controlled conditions of temperature, humidity and photoperiod for evaluation of mortality. The extract at 5 mg L -1 provided the highest morality over the days of evaluation. The species showed promise to be further investigated for use in citrus blackfly control.

The forestry sector occupies a prominent place among the economic segments in Brazil, with the cultivation of Eucalyptus sp. Among the numerous insects that can damage eucalyptus crops, the Saturniidae family has been noted as a secondary and main pest. The objective is to describe some bionomic aspects of Cerodirphia opis (Schaus, 1892) and to identify its natural enemies in the laboratory. Larvae were collected in stands of Eucalyptus sp. and raised in nylon mesh cages. Biological parameters were obtained under temperature conditions: 25 ± 1ºC, RH 80 ± 10% and 14hour photophase, with daily observations. Only 11% of viability was observed in the larval stage. 32 males and 7 females were obtained, which represents a sex ratio of 0.18. The length of male pupae ranged from 20.57 mm to 26.46 mm, width ranged from 8.28 to 11.07 mm and weight from 0.31 to 1.930 g. The females were 10.42 to 12.85 mm, 8.28 to 11.07 mm and 1.91 to 1.93 g respectively. The parasitoid of larvae Megaselia scalaris (Loew) (Diptera: Phoridae) was found as a natural enemy, being the first recorded in Saturniidae.

Todo o conteúdo deste livro está licenciado sob uma Licença de Atribuição Creative Commons. Atribuição 4.0 Internacional (CC BY 4.0). O conteúdo dos artigos e seus dados em sua forma, correção e confiabilidade são de responsabilidade exclusiva dos autores. Permitido o download da obra e o compartilhamento desde que sejam atribuídos créditos aos autores, mas sem a possibilidade de alterá-la de nenhuma forma ou utilizá-la para fins comerciais.