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The structure of the female postabdomen and associated sensilla of tephritoid flies (Diptera: Tephritoidea)

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The external morphology of Tephritoidea was studied, including the types and distribution of sensilla on the female postabdomen. The complex oviposition behavior of tephritoid flies has resulted in extensive morphological modifications of the female postabdominal segments and the formation of characteristic distribution patterns of sensilla. The study revealed three morphologically distinct types of postabdomen in Tephritoidea: otitid, tephritid, and pyrgotid. The possible physiological functions of the major morphological adaptations and the homologies of segments of the post abdomen are discussed. The results confirm the present conception of the superfamily Tephritoidea, with the exception of Piophilidae. The morphological differences found in the female terminalia of Piophilidae indicate that inclusion of this family within Tephritoidea should be reconsidered.

Nous avons étudié la morphologie externe des Tephritoidea, notamment les types de sensilles et leur répartition sur le post-abdomen des femelles. Le comportement de ponte complexe des diptères téphritoïdes a entraîné des modifications importantes des segments post-abdominaux des femelles et l'apparition de patterns de répartition particuliers des sensilles. Notre étude a mis en lumière l'existence de trois types de post-abdomens morphologiquement distincts chez les Tephritoidea : otitide, téphritide et pyrgotide. Nous examinons le rôle possible des adaptations morphologiques importantes et les homologies des segments du post-abdomen. Nos résultats confirment la validité de la définition actuelle de la super-famille des Tephritoidea, à l'exception des Piophilidae. Les différences morphologiques des segments terminaux des Piophilidae femelles nécessitent qu'on remette en question l'insertion de cette famille parmi les Tephritoidea.[Traduit par la Rédaction]

Document Type: Research Article

Publication date: August 1, 2002

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  • Published since 1929, this monthly journal reports on primary research contributed by respected international scientists in the broad field of zoology, including behaviour, biochemistry and physiology, developmental biology, ecology, genetics, morphology and ultrastructure, parasitology and pathology, and systematics and evolution. It also invites experts to submit review articles on topics of current interest.
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