Espécies de Ceraeochrysa Adams (Neuroptera: Crysopidae) presentes em pomares de Citrus SPP., na Venezuela
Carregando...
Arquivos
Data
2008-06-09
Autores
Sosa Duque, Francisco José [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Universidade Estadual Paulista (Unesp)
Resumo
O gênero Ceraeochrysa Adams é um dos maiores e amplamente distribuídos do Neotrópico. Muitas de suas espécies têm sido relatadas como importantes controladores biológicos de insetos pragas em culturas. Em Venezuela o estudo dos crisopídeos tem passado despercebido e somente as espécies Ceraeochrysa cubana, C. everes, e C. valida tem relato de ocorrência. Levando em conta esta problemática se realizaram amostragens nos estados Lara (Tarabana), Yaracuy (Aroa, Nirgua), Portuguesa (Las Matas), Barinas (Socopo) e Miranda (Tacata) com o objetivo de fazer um levantamento das espécies de Ceraeochrysa que ocorrem em pomares de Citrus spp., na Venezuela. Os insetos coletados foram coletados com rede entomologia, colocados vivos em garrafas plásticas de 1 Lt de capacidade, levados ao laboratório, congelados, alfinetados e secados. Posteriormente o abdômen foi cortado e macerado em solução de KOH 10% por duas horas, colorado com Clorazol Black, extraída a genitália, fotografada e desenhada com ajuda de microscópio estereoscópico e microscópio biológico, ambos com câmaras lúcidas acopladas. Os exemplares foram identificados comparando as genitálias previas disponíveis em textos e publicações especializadas. Foram identificadas as espécies C. cincta, C. cubana, C. everes e C. valida já relatadas para Venezuela e as espécies C. acmon, C. caligata, C. claveri, C. dislepis, C. montoyana, C. sanchezi, C. scapularis, C squama e C. valida, alem dos exemplares Ceraeochrysa sp1, Ceraeochrysa sp2, Ceraeochrysa sp3 e Ceraeochrysa sp4. Para cada exemplar foram realizadas as redescrições e descrições correspondentes. As redescrições foram justificadas em função das variações intraespecíficas que se observaram, desenhou-se uma chave taxonômica para identificação das espécies e para cada uma delas foram realizadas pranchas de desenhos que mostram os caracteres ressaltantes das espécies estudadas.
Ceraeochrysa Adams is one of the largest and widely distributed green lacewing genus. Many species has been related as an important biological control agents of insects pest in agricultural situations. In Venezuela, the study of green lacewings has been passed over and only Ceraeochrysa cubana, C. everes, and C. valida species has been reported. Considering this problem, several sampling in Lara (Tarabana), Yaracuy (Aroa, Nirgua), Portuguesa (Las Matas), Barinas (Socopo) and Miranda (Tacata) states were made intending to make an inventory of Ceraeochrysa species that occur in orchards of Citrus spp. in Venezuela. The insects samples were collected with proper nets, put on plastic bottles, taken to the lab, frozen, pinned and dried. Afterward, the abdomen was cut and macerated in KOH 10% solution by two hours, tinted with clorazol-black and it was made the corresponding analyses to identify the exemplars by comparing their genitals among available specialized essays and publications. It was found C. cincta, C. cubana, C. everes and C. valida species already reported to Venezuela and the species C. acmon, C. caligata, C. claveri, C. dislepis, C. sanchezi, C. scapularis, C. squama, C. montoyana, in addition to exemplars Ceraeochrysa sp1, Ceraeochrysa sp2, Ceraeochrysa sp3 and Ceraeochrysa sp4. For each sample it had been made the re-descriptions and descriptions correspondents. The re-description were justified by the intraspecifics variations that were observed, then a taxonomic key were drawn to indentify the species and, for each of them, were realized model sheets that brings us the standings characteristics of studied species. Further studies will be necessary to use these species in pest management programs.
Ceraeochrysa Adams is one of the largest and widely distributed green lacewing genus. Many species has been related as an important biological control agents of insects pest in agricultural situations. In Venezuela, the study of green lacewings has been passed over and only Ceraeochrysa cubana, C. everes, and C. valida species has been reported. Considering this problem, several sampling in Lara (Tarabana), Yaracuy (Aroa, Nirgua), Portuguesa (Las Matas), Barinas (Socopo) and Miranda (Tacata) states were made intending to make an inventory of Ceraeochrysa species that occur in orchards of Citrus spp. in Venezuela. The insects samples were collected with proper nets, put on plastic bottles, taken to the lab, frozen, pinned and dried. Afterward, the abdomen was cut and macerated in KOH 10% solution by two hours, tinted with clorazol-black and it was made the corresponding analyses to identify the exemplars by comparing their genitals among available specialized essays and publications. It was found C. cincta, C. cubana, C. everes and C. valida species already reported to Venezuela and the species C. acmon, C. caligata, C. claveri, C. dislepis, C. sanchezi, C. scapularis, C. squama, C. montoyana, in addition to exemplars Ceraeochrysa sp1, Ceraeochrysa sp2, Ceraeochrysa sp3 and Ceraeochrysa sp4. For each sample it had been made the re-descriptions and descriptions correspondents. The re-description were justified by the intraspecifics variations that were observed, then a taxonomic key were drawn to indentify the species and, for each of them, were realized model sheets that brings us the standings characteristics of studied species. Further studies will be necessary to use these species in pest management programs.
Descrição
Palavras-chave
Sistemas de controle biologico, Taxonomia numerica, Bicho licheiro, Predador, Biological control, Green lacewing, Predator
Como citar
SOSA DUQUE, Francisco José. Espécies de Ceraeochrysa Adams (Neuroptera: Crysopidae) presentes em pomares de Citrus SPP., na Venezuela. 2008. xii, 64 f. Dissertação (mestrado) - Universidade Estadual Paulista, Faculdade de Ciências Agrárias e Veterinárias, 2008.