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      Aspectos ultraestructurales de los estadios inmaduros de Micropygomyia (Sauromyia) trinidadensis (Diptera: Psychodidae, Phlebotominae) Translated title: Ultrastructural aspects of immature stages of Micropygomyia (Sauromyia) trinidadensis (Diptera: Psychodidae, Phlebotominae)

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          Abstract

          Los sistemas de clasificación de la subfamilia Phlebotominae se basan principalmente en características de imagos, observadas mayormente bajo microscopía de luz. La Microscopía Electrónica de Barrido (MEB) proporciona información adicional sobre caracteres morfológicos para la identificación de estadios inmaduros e imagos en los sistemas de clasificación de los flebotominos. En el presente artículo se identificaron y describieron características ultramorfológicas externas de huevos, larvas estadio IV y pupas de Micropygomyia (Sauromyia) trinidadensis, obtenidas en condiciones de laboratorio a partir de hembras flebotominas capturadas en Trujillo, región Andino-Venezolana. El estudio ultramorfológico reveló que los huevos de Mi. (Sau.) trinidadensis poseen un patrón de esculpido exo-coriónico poligonal, mientras que las larvas IV pueden colocarse en el Grupo 4 de las especies flebotominas del Neotrópico que se caracterizan por antenas con segmento basal corto y el distal ovoide; la mayoría de las setas analizadas de las pupas son simples y espiniformes, y las pre-alares son largas y delgadas con puntas afiladas. Se discute la importancia de estos hallazgos ultraestructurales en el contexto de la taxonomía y sistema de quetotaxia de la subfamilia Phlebotominae.

          Translated abstract

          The classification systems of the subfamily Phlebotominae has been mainly based on morphological characters of adult stages, and mostly studied under light microscopy. Scanning Electron Microscopy (SEM) provides additional information for the identification of pre-imaginal and imaginal stages in phlebotomine sand flies classification systems. In the present study, outer ultramorphological characteristics of laboratory reared eggs, fourth instar larvae and puparium of Micropygomyia (Sauromyia) trinidadensis of Trujillo, Venezuelan Andes region, were identified and described. The ultramorphological study revealed a poligonal exo-chorionic sculpturing pattern of the eggs of M. trinidadensis, whereas the fourth instar larvae can be placed in Group 4 of the Neotropical phlebotomine which are characterized by antennae with a short basal segment and an ovoid distal segment; most of analysed puparium setae are short, smooth and spinniform, and the pre-alar ones long, thin and sharp. The importance of these ultrastructural findings to phlebotomine sandfly taxonomy and chaetotaxy system, is discussed.

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          Most cited references38

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          The Taxonomic Significance of the Characters of Immature Insects

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            Vectors of Leishmaniasis in Venezuela

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              La fauna flebotómica (Diptera: Psychodidae) en Venezuela: I.- Taxonomía y distribución geográfica.

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Journal
                saber
                Saber
                Saber
                Universidad de Oriente
                2343-6468
                June 2015
                : 27
                : 2
                : 232-241
                Affiliations
                [1 ] Universidad Nacional Experimental Francisco de Miranda Venezuela
                [2 ] Universidad de Los Andes Venezuela
                Article
                S1315-01622015000200004
                08b9936b-713d-4087-a451-3f20d82297fc

                http://creativecommons.org/licenses/by/4.0/

                History
                Product

                SciELO Venezuela

                Self URI (journal page): http://www.scielo.org.ve/scielo.php?script=sci_serial&pid=1315-0162&lng=en
                Categories
                MULTIDISCIPLINARY SCIENCES

                Sand flies,morphology,Insecta,Scanning Electron Microscopy,Flebotominos,morfología,Microscopía Electrónica de Barrido

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