Abstract
The larval stage remains unknown for many sawflies, making it difficult to explore the phylogenetic significance of larval morphology. Here, we assemble a data set from the larval anatomy of 22 genera of Argidae and Zenargidae. We scored 85 characters for 48 terminal taxa and use a maximum parsimony approach applying equal (EW) and implied weights (IW) for phylogenetic reconstruction. We describe in detail for the first time the final larval instar of Zenarge turneri to illustrate the character systems employed. We retrieve the topology Zenarge + (Argidae s. stricto + Pergidae) in both EW and IW analyses; however, the branch support is low. We explore the phylogenetic relationships and character optimization based on the k value = 15 IW tree. Argidae s. stricto and Pergidae are recovered only under IW analyses. Within Argidae, two main clades are retrieved; these are congruent with the subfamilies Arginae and Sterictiphorinae s. Benson (1963). The genera Arge and Didymia are not retrieved as monophyletic. In general, the relationships produced by analyzing the larval morphology are consistent with those derived from adult morphology. We identify some patterns in the evolution of larval morphology of the Argidae.
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Data availability
The datasets generated during and/or analyzed during the current study are included in this manuscript, and the information is available from the corresponding author on reasonable request.
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Acknowledgements
We are especially grateful to the curators of the different entomological collections that contributed material and/or images to this project: Stephan Blank (SDEI), Andrew Liston (SDEI), Stefan Schmidt (ZSM), Derek Smith (AM), Andreas Taeger (SDEI), and Valentina Vergara (UNAB). Thanks to Sofia Argüello and Stefan Schmidt for providing the photographs of Scobina sp. and Antargidium sp. in the wild. Mention of trade names or commercial products in this publication is solely for the purpose of providing specific information and does not imply recommendation or endorsement by the USDA. USDA is an equal opportunity provider and employer.
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We thank COLCIENCIAS Institution of Colombia, which funded the first author’s PhD program at the University of Copenhagen. This research was funded by the Zoological Museum of the Natural History Museum of Denmark, and the Administrative Department of Science, Technology and Innovation of Colombia, COLCIENCIAS.
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This manuscript is based on results from the PhD thesis of the first author (Leonardo A. Malagón-Aldana). Lars Vilhelmsen and Leonardo A. Malagón-Aldana conceived and designed the study. Material preparation was performed by Leonardo A. Malagón-Aldana, David R. Smith, and Akihiko Shinohara. Data collection and analysis were performed by Leonardo A. Malagón-Aldana. The first draft of the manuscript was written by Leonardo A. Malagón-Aldana and Lars Vilhelmsen; David R. Smith and Akihiko Shinohara commented on later versions of the manuscript. All authors read and approved the final version.
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Malagon-Aldana, L.A., Shinohara, A., Smith, D.R. et al. Comparative anatomy of the larvae of argid sawflies (Hymenoptera: Argidae): a phylogenetic approach. Org Divers Evol 21, 361–392 (2021). https://doi.org/10.1007/s13127-021-00485-0
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DOI: https://doi.org/10.1007/s13127-021-00485-0