A review of the early stages and host plants of the genera Eumerus and Merodon (Diptera: Syrphidae), with new data on four species

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Title: A review of the early stages and host plants of the genera Eumerus and Merodon (Diptera: Syrphidae), with new data on four species
Authors: Ricarte, Antonio | Souba Dols, Gabriel J. | Hauser, Martin | Marcos-García, M. Ángeles
Research Group/s: Biodiversidad y Biotecnología aplicadas a la Biología de la Conservación
Center, Department or Service: Universidad de Alicante. Departamento de Ciencias Ambientales y Recursos Naturales | Universidad de Alicante. Centro Iberoamericano de la Biodiversidad
Keywords: Eumerus and Merodon | Diptera | Syrphidae | Early stages | Host plants
Knowledge Area: Zoología
Issue Date: 19-Dec-2017
Publisher: Public Library of Science (PLoS)
Citation: Ricarte A, Souba-Dols GJ, Hauser M, Marcos-García MÁ (2017) A review of the early stages and host plants of the genera Eumerus and Merodon (Diptera: Syrphidae), with new data on four species. PLoS ONE 12(12): e0189852. https://doi.org/10.1371/journal.pone.0189852
Abstract: The genera Eumerus and Merodon (Diptera: Syrphidae) have a high taxonomic diversity (300+ species altogether), but life histories of most species are unknown. In addition, these hoverfly genera are recognised to be pests (ornamental plants and vegetable crops). In this paper, early stages of four hoverfly species are described, Eumerus hungaricus Szilády, 1940, Eumerus nudus Loew, 1848 and Merodon geniculatus Strobl, 1909, from Spain, and Eumerus strigatus Walker, 1859, from California, USA. Larvae of E. nudus were obtained from swollen roots of Asphodelus cerasiferus J. Gay. Larvae of E. hungaricus were found in bulbs of Narcissus confusus Pugsley. The host plant of the examined specimen of Eumerus strigatus is unknown. Larvae of M. geniculatus were reared from bulbs of different species of Narcissus L. Scanning electron microscope imaging was used to study and illustrate the anterior respiratory processes, pupal spiracles and posterior respiratory processes of the new early stages. A compilation of all available information on the early stages and host plants of Eumerus (21 spp.) and Merodon (15 spp) is provided, as well as an identification key to all known larvae/puparia of these genera. Eumerus elavarensis Séguy, 1961 is proposed as a new synonym of E. hungaricus and first data of this species are reported from Austria, Bulgaria, Spain and Turkey. In Eumerus, larvae are alleged to rely on the previous presence of decay organisms, but in the larvae of E. nudus the sclerotisation and size of the mandibular hooks suggest that this larva can generate decay from intact plant tissue.
Sponsor: GS and AR positions at CIBIO (University of Alicante) were funded by Generalitat Valenciana (Prometeo 2013/034; http://www.ceice.gva.es/en) and CAMPUSHÁBITAT5U (CEI15-05; http://campushabitat5u.es/), respectively.
URI: http://hdl.handle.net/10045/72360
ISSN: 1932-6203
DOI: 10.1371/journal.pone.0189852
Language: eng
Type: info:eu-repo/semantics/article
Rights: This is an open access article, free of all copyright, and may be freely reproduced, distributed, transmitted, modified, built upon, or otherwise used by anyone for any lawful purpose. The work is made available under the Creative Commons CC0 public domain dedication.
Peer Review: si
Publisher version: http://dx.doi.org/10.1371/journal.pone.0189852
Appears in Collections:INV - BBaBC - Artículos de Revistas

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