José J. Orengo-Green , Antonio Ricarte , Martin Hauser , Dominique Langlois , Mª Á. Marcos-García
{"title":"关于欧洲和非洲一些 Merodontini 食蚜蝇(双翅目:蚜科)的未成熟阶段","authors":"José J. Orengo-Green , Antonio Ricarte , Martin Hauser , Dominique Langlois , Mª Á. Marcos-García","doi":"10.1016/j.asd.2023.101328","DOIUrl":null,"url":null,"abstract":"<div><p>The genera <em>Eumerus</em> and <em>Merodon</em> (Syrphidae: Merodontini) form together the most speciose grouping of hoverflies in the Palaearctic Region. However, little is known about the morphology and biology of their larvae. The few larvae of <em>Eumerus</em> and <em>Merodon</em> that have been uncovered are phytophagous in underground organs of plants (some <em>Eumerus</em> and all <em>Merodon</em>) or saprophagous in a variety of plants' parts (the reminder of <em>Eumerus</em>). In this study, the second larval stage (L2) of <em>Eumerus lyneborgi</em> Ricarte & Hauser, 2020 and both the larva (L2) and puparium of <em>Merodon constans</em> (Rossi, 1794) are described for the first time. Larvae of <em>E. lyneborgi</em> were found in a decaying stem of <em>Cyphostemma juttae</em> (Dinter & Gilg) Desc., 1960 (Vitaceae) in Namibia (Africa), while larvae of <em>M. constans</em> were collected in bulbs of <em>Leucojum vernum</em> Linnaeus, 1753, (Amaryllidaceae) in France (Europe). Morphology of the immature forms was studied by observation and imaging with stereomicroscopy and scanning electron microscopy. The head skeleton of <em>E. lyneborgi</em> larvae was found to be of the filter feeding type, i.e., in accordance with a saprophagous trophic regime, while that of <em>M. constans</em> was typically phytophagous. Variability in certain characters of the <em>M. constans</em> early stages is described and discussed in relation to the adult form and molecular information published in literature. An updated identification key to all known third larval stages/puparia of <em>Merodon</em> is provided.</p></div>","PeriodicalId":55461,"journal":{"name":"Arthropod Structure & Development","volume":null,"pages":null},"PeriodicalIF":1.7000,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1467803923000956/pdfft?md5=450076ad2cc6da6220560582feda6f04&pid=1-s2.0-S1467803923000956-main.pdf","citationCount":"0","resultStr":"{\"title\":\"On the immature stages of some Merodontini hoverflies (Diptera: Syrphidae) from Europe and Africa\",\"authors\":\"José J. Orengo-Green , Antonio Ricarte , Martin Hauser , Dominique Langlois , Mª Á. Marcos-García\",\"doi\":\"10.1016/j.asd.2023.101328\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The genera <em>Eumerus</em> and <em>Merodon</em> (Syrphidae: Merodontini) form together the most speciose grouping of hoverflies in the Palaearctic Region. However, little is known about the morphology and biology of their larvae. The few larvae of <em>Eumerus</em> and <em>Merodon</em> that have been uncovered are phytophagous in underground organs of plants (some <em>Eumerus</em> and all <em>Merodon</em>) or saprophagous in a variety of plants' parts (the reminder of <em>Eumerus</em>). In this study, the second larval stage (L2) of <em>Eumerus lyneborgi</em> Ricarte & Hauser, 2020 and both the larva (L2) and puparium of <em>Merodon constans</em> (Rossi, 1794) are described for the first time. Larvae of <em>E. lyneborgi</em> were found in a decaying stem of <em>Cyphostemma juttae</em> (Dinter & Gilg) Desc., 1960 (Vitaceae) in Namibia (Africa), while larvae of <em>M. constans</em> were collected in bulbs of <em>Leucojum vernum</em> Linnaeus, 1753, (Amaryllidaceae) in France (Europe). Morphology of the immature forms was studied by observation and imaging with stereomicroscopy and scanning electron microscopy. The head skeleton of <em>E. lyneborgi</em> larvae was found to be of the filter feeding type, i.e., in accordance with a saprophagous trophic regime, while that of <em>M. constans</em> was typically phytophagous. Variability in certain characters of the <em>M. constans</em> early stages is described and discussed in relation to the adult form and molecular information published in literature. 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On the immature stages of some Merodontini hoverflies (Diptera: Syrphidae) from Europe and Africa
The genera Eumerus and Merodon (Syrphidae: Merodontini) form together the most speciose grouping of hoverflies in the Palaearctic Region. However, little is known about the morphology and biology of their larvae. The few larvae of Eumerus and Merodon that have been uncovered are phytophagous in underground organs of plants (some Eumerus and all Merodon) or saprophagous in a variety of plants' parts (the reminder of Eumerus). In this study, the second larval stage (L2) of Eumerus lyneborgi Ricarte & Hauser, 2020 and both the larva (L2) and puparium of Merodon constans (Rossi, 1794) are described for the first time. Larvae of E. lyneborgi were found in a decaying stem of Cyphostemma juttae (Dinter & Gilg) Desc., 1960 (Vitaceae) in Namibia (Africa), while larvae of M. constans were collected in bulbs of Leucojum vernum Linnaeus, 1753, (Amaryllidaceae) in France (Europe). Morphology of the immature forms was studied by observation and imaging with stereomicroscopy and scanning electron microscopy. The head skeleton of E. lyneborgi larvae was found to be of the filter feeding type, i.e., in accordance with a saprophagous trophic regime, while that of M. constans was typically phytophagous. Variability in certain characters of the M. constans early stages is described and discussed in relation to the adult form and molecular information published in literature. An updated identification key to all known third larval stages/puparia of Merodon is provided.
期刊介绍:
Arthropod Structure & Development is a Journal of Arthropod Structural Biology, Development, and Functional Morphology; it considers manuscripts that deal with micro- and neuroanatomy, development, biomechanics, organogenesis in particular under comparative and evolutionary aspects but not merely taxonomic papers. The aim of the journal is to publish papers in the areas of functional and comparative anatomy and development, with an emphasis on the role of cellular organization in organ function. The journal will also publish papers on organogenisis, embryonic and postembryonic development, and organ or tissue regeneration and repair. Manuscripts dealing with comparative and evolutionary aspects of microanatomy and development are encouraged.