Merodon flavocerus (Diptera: Syrphidae: Eristalinae: Merodontini: Merodon: desturianus lineage: melanocerus group: melanocerus subgroup)
A member of the melanocerus subgroup which is only known from South Africa.
All species in this subgroup have a dense, strong yellow or red brush of pile on the metatrochanter, on the head, the oral margin is notched and produced forward.
Merodon flavocerus (detailled description in Radenković et al 2018, page 18):
This species is recorded from the Western Cape and the Eastern Cape in South Africa.
Photo of male head in Vujic et al 2018
https://www.researchgate.net/figure/Head-female-AMerodon-flavocerusBMerodon-murorum-Scale-bar-1mm_fig19_326210806
Illustration of head and antennae in Radenković et al 2018
https://journals.plos.org/plosone/article/figure?id=10.1371/journal.pone.0200805.g007
Illustration of metafemur in Radenković et al 2018
https://journals.plos.org/plosone/article/figure?id=10.1371/journal.pone.0200805.g012
iNat observation: https://www.inaturalist.org/observations/134963978
References:
Radenković S, Veličković N, Ssymank A, Obreht Vidaković D, Djan M, Ståhls G, et al. 2018. Close relatives of Mediterranean endemo-relict hoverflies (Diptera, Syrphidae) in South Africa: Morphological and molecular evidence in the Merodon melanocerus subgroup. PLoS ONE 13(7):
e0200805. https://doi.org/10.1371/journal.pone.0200805
Vujić A, Radenković S, Likov L. 2018. Revision of the Palaearctic species of the Merodon desuturinus group (Diptera, Syrphidae). ZooKeys 771: 105–138. https://doi.org/10.3897/zookeys.771.20481
Vujić A, Radenković S, Likov L, Veselić S. 2021. Taxonomic complexity in the genus Merodon Meigen, 1803 (Diptera, Syrphidae). ZooKeys 1031: 85–124. https://doi.org/10.3897/zookeys.1031.62125
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