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      Description of mature larvae and ecological notes on Gasteruption Latreille (Hymenoptera, Evanioidea, Gasteruptiidae) parasitizing hymenopterans nesting in reed galls

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      Journal of Hymenoptera Research

      Pensoft Publishers

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          Abstract

          Wasps of the genus Gasteruption are predator-inquilines of bees nesting in cavities in wood, stems, galls, and vertical soil surfaces. During studies of hymenopterans associated with reed galls caused by flies of the genus Lipara we recorded three species. We provide the evidence that a rare European species Gasteruptionphragmiticola is a specialized predator-inquiline of an equally rare wetland bee Hylaeuspectoralis. Gasteruptionnigrescens is a predator-inquiline of bees of the family Megachilidae, using the common bee Hoplitisleucomelana as the main host. Gasteruptionassectator is a less specialized predator-inquiline of multiple groups of bees. The first two species, G.phragmiticola and G.nigrescens, are usually present at well-preserved reed beds associated with meadows rich in flowering plants while G.assectator does not prefer any specific habitat. Mature larvae of Gasteruption typically have a dorsoventrally flattened body and lateral lobes, small head with only slightly sclerotized mouthparts and tridentate mandibles. The larvae of these three species differ only slightly from one another, at most by the sclerotization of the mouthparts, colour, and position of setae on the head capsule and the shape of the mandible. As previous descriptions are insufficient, we provide first detailed descriptions with figures.

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          Most cited references 9

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          THE MORPHOLOGY, TAXONOMY, AND BIOLOGY OF THE BRITISH EVANIOIDEA (HYMENOPTERA)

           R CROSSKEY (1951)
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            THE MORPHOLOGY OF THE HEAD OF LARVAL HYMENOPTERA WITH SPECIAL REFERENCE TO THE HEAD OF THE ICHNEU-MONOIDEA, INCLUDING A CLASSIFICATION OF THE FINAL INSTAR LARVAE OF THE BRACONIDAE

             J. Short (1952)
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              Reed galls serve as an underestimated but critically important resource for an assemblage of aculeate hymenopterans

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                Author and article information

                Journal
                Journal of Hymenoptera Research
                JHR
                Pensoft Publishers
                1314-2607
                1070-9428
                August 27 2018
                August 27 2018
                : 65
                : 1-21
                Article
                10.3897/jhr.65.26645
                © 2018

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