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      Taxonomic redescription and biological notes on Diaugia angusta (Diptera, Tachinidae): parasitoid of the palm boring weevils Metamasius ensirostris and M. hemipterus (Coleoptera, Dryophthoridae)

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          Abstract

          Abstract

          Diaugia angusta Perty, 1833 is a Neotropical species of Tachinidae ( Diptera) reported here as a parasitoid of Metamasius ensirostris (Germar, 1824) and Metamasius hemipterus (Linnaeus, 1758) ( Coleoptera: Dryophthoridae) in Brazil. Several species of Dryophthoridae and Curculionidae cause damage to bromeliad and palm species, and most are regarded as pests. In the present study, the male and female of Diaugia angusta are morphologically characterized and illustrated to provide a means for the identification of this parasitoid. Data obtained from preliminary field research show that natural parasitism of Metamasius pupae by Diaugia angusta varies by year but can reach nearly 30%. A network of parasitoid-host interactions among tachinid parasitoids and coleopteran hosts reported as bromeliad and palm pests ( Dryophthoridae and Curculionidae) in the Americas indicates that the species of the tribe Dexiini sensu lato (including Diaugia angusta) might be promising as biological control agents of these pests.

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          Most cited references 7

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          Host-parasite and parasite-host catalogue of South American Tachinidae (Diptera) )

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            Development of a Pheromone-Based Trapping System for Rhynchophorus palmarum (Coleoptera: Curculionidae)

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              Natural efficiency of parasitism by Billaea rhynchophorae (Blanchard) (Diptera: Tachinidae) for the control of Rhynchophorus palmarum (L.) (Coleoptera: Curculionidae).

              The occurrence of the tachinid parasitoid Billaea rhynchophorae (Blanchard) on larvae of the palm weevil Rhynchophorus palmarum (L.) was evaluated in plantations of piassava palm (Attalea funifera Mart.) and African oil palm (Elaeis guineensis Jacquin), in southeastern Bahia, Brazil. The monthly percentages of parasitism were evaluated during 13 months, from November 2000 to November 2001, based on the comparison between the number of parasitized and non-parasitized cocoons of R. palmarum. Mean parasitism was 40% and ranged from 50% in November 2000 to 18% in July 2001. While there is no method of mass reproduction of the parasitoid, a simple management practice is recommended, in order to preserve its beneficial effects in palm plantations.
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                Author and article information

                Journal
                Zookeys
                ZooKeys
                ZooKeys
                Pensoft Publishers
                1313-2989
                1313-2970
                2011
                1 March 2011
                : 84
                : 23-38
                Affiliations
                [1 ]Departamento de Zoologia, Instituto de Biociências, Universidade de São Paulo, Rua do Matão, Travessa 14, n. 101, 05508-900, Cidade Universitária, São Paulo, SP, Brazil
                [2 ]Departamento de Agronomia, Campus Experimental de Registro, Universidade Estadual Paulista, Rua Nelson Brihi Badur, n. 430, 11900-000, Registro, SP, Brazil
                Author notes
                Corresponding author: Silvio Shigueo Nihei ( silvionihei@ 123456gmail.com ).

                Academic editor: Martin Hauser

                Article
                10.3897/zookeys.84.756
                3088068
                21594164
                Silvio Shigueo Nihei, Ronaldo Pavarini

                This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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