Merodon edentulus Macquart 1855

Autor: Vujić, Ante, Radenković, Snežana, Zorić, Ljiljana Šašić, Likov, Laura, Tot, Tamara, Veselić, Sanja, Djan, Mihajla
Rok vydání: 2021
Předmět:
DOI: 10.5281/zenodo.5013411
Popis: Merodon edentulus Macquart, 1855 nom. dub., stat. rev. Merodon edentulus Macquart, 1855: 90. This name was introduced by Macquart (1855) based on a single specimen from South Africa. The type material is lost. Curran (1939) stated that this can scarcely be a Merodon because it is said to have no thorn (lamina) on the metafemur. Type locality is Cape of Good Hope (RSA) from where no specimen of Merodon was collected. The description is insufficient, even for an identification to the genus level. In the same publication, Macquart (1855) described one other exotic Merodon from South America, Merodon angustiventris Macquart, 1855 which was re-identified as a member of the genus Quichuana Knab, 1913 (Thompson 1988). Therefore, we regard the name Merodon edentulus to be a nomen dubium. Variability of species in the Merodon bombiformis group A variability in shape of the triangular lamina of the metafemur is present in most of the species of the Merodon bombiformis group, as seen in figures of M. bombiformis (Fig. 21A–D), M. lotus sp. nov. (Fig. 22A–C) M. multifasciatus (Fig. 21F–H), M. nasicus (Fig. 23A–B) and M. zebra sp. nov. (Fig. 22D– F). The triangular lamina is more or less dentate, and the apical dens is distinct (M. bombiformis, M. multifasciatus, M. vittatus sp. nov.) or less distinct, as in M. lotus sp. nov. and M. nasicus. A scutum with conspicuous pollinose vittae, and terga with pollinose posterior margin and medial fasciae, are characters present in most species, except M. lotus sp. nov., characterized by the absence of pollinosity on thorax and abdomen (in females a pair of indistinct pollinose fasciae on tergum 4). Width and shape of vittae and fasciae on scutum and terga vary, especially in M. multifasciatus, M. nasicus and M. zebra sp. nov. The colour of the postpronotum, lateral sides of scutum, frons and face in M. multifasciatus vary from reddish-brown to black. Specimens from the south of the range (RSA) are darker than individuals from northern parts (Central Africa).
Published as part of Vujić, Ante, Radenković, Snežana, Zorić, Ljiljana Šašić, Likov, Laura, Tot, Tamara, Veselić, Sanja & Djan, Mihajla, 2021, Revision of the Merodon bombiformis group (Diptera: Syrphidae) - rare and endemic African hoverflies, pp. 88-135 in European Journal of Taxonomy 755 (1) on pages 120-122, DOI: 10.5852/ejt.2021.755.1401, http://zenodo.org/record/5013000
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Databáze: OpenAIRE