Costal vein chaetotaxy, a neglected character source in Fanniidae and Muscidae (Diptera: Calyptratae)

  • Verner Michelsen Natural History Museum of Denmark, University of Copenhagen, Denmark
Keywords: macrotrichia, setulae, spinules, vein C, morphology, taxonomy, phylogeny


The present study examines whether the chaetotaxy of the costal vein in the calyptrate families Fanniidae and Muscidae deserves more attention in phylogenetic and taxonomic contexts. An overview of the macrotrichia and their arrangement on wing vein C is given. Special attention is given to the presence/absence of ventral and dorsal setulae on the costal sectors CS1‒3. This is described as one variable character (A) with nine states (A0‒A8). Specimens of both sexes (when possible) of each species belonging to 4 of a total of 5 fanniid genera and 115 of a total of 179 muscid genus-group taxa were examined and scored for character A. It was found that the presumed ancestral state of character A differs between the two families. It is further shown that the main transformational trend in character A in Muscidae has been bi-directional, leading either to the loss of ventral setulae or the gain of dorsal setulae. The utility of character A in the Fanniidae and Muscidae is many-sided and involves taxa ranging from species to family. It is concluded that character A and other aspects of costal chaetotaxy deserve more attention in morphology-based studies of calyptrate flies.


Chillcott J.G. 1961. A revision of the Nearctic species of Fanniinae (Diptera: Muscidae). Canadian Entomologist 92 (Suppl. 14): 1–295.

Couri M.S. & de Carvalho C.J.B. 2003. Systematic relations among Philornis Meinert, Passeromyia Rodhain & Villeneuve and allied genera (Diptera, Muscidae). Brazilian Journal of Biology 63: 223‒232.

Couri M.S. & Pont A.C. 2000. Cladistic analysis of Coenosiini (Diptera: Muscidae). Systematic Entomology 25: 373‒392.

Domínguez M.C. & Pont A.C. 2014. Fanniidae (Insecta: Diptera). Fauna of New Zealand 71 : 1–91.

Domínguez M.C. & Roig-Juñent S.A. 2008. A phylogeny of the family Fanniidae Schnabl (Insecta: Diptera: Calyptratae) based on adult morphological characters, with special reference to the Austral species of the genus Fannia. Invertebrate Systematics 22: 563‒587.

Gnatzy W., Grünert U. & Bender M. 1987. Campaniform sensilla of Calliphora vicina (Insecta, Diptera). I. Topography. Zoomorphology 106: 312‒319.

Grzywacz A. 2013. Third instar larva morphology of Hydrotaea cyrtoneurina (Zetterstedt, 1845) (Diptera: Muscidae) – a species of forensic interest. Polish Journal of Entomology 82: 303‒315.

Grzywacz A., Trzeciak P., Wiegmann B.M., Cassel B.K., Pape T., Walczak K., Bystrowski C., Nelson L. & Piwczyn’ski M. 2021. Towards a new classification of Muscidae (Diptera): a comparison of hypotheses based on multiple molecular phylogenetic approaches. Systematic Entomology 46: 508‒525.

Hackman W. & Väisänen R. 1985. The evolution and phylogenetic significance of the costal chaetotaxy in the Diptera. Annales Zoologici Fennici 22: 169‒203.

Haseyama K.L.F. & de Carvalho C.J.B. 2011. A new species of the Neotropical genus Itatingamyia Albuquerque (Diptera: Muscidae). Zootaxa 2915 (1): 61‒65.

Haseyama K.L.F. & de Carvalho C.J.B. 2012. Taxonomy and phylogeny of the Neotropical genus Charadrella Wulp (Diptera: Muscidae). Invertebrate Systematics 26 (4): 399‒416.

Haseyama K.L.F., Wiegmann B.M., Almeida E.A.B. & de Carvalho C.J.B. 2015. Say goodbye to tribes in the new house fly classification: a new molecular phylogenetic analysis and an updated biogeographical narrative for the Muscidae (Diptera). Molecular Phylogenetics and Evolution 89: 1‒12.

Haseyama K.L.F., de Carvalho C.J.B., Zafalon-Silva Â. & Kirst F.D. 2019. New systematic position of Itatingamyia Albuquerque (Diptera, Muscidae) based on molecular evidence, and description of the female of I. couriae. Revista brasileira de Entomologia 63: 35‒42.

Hennig W. 1955a. Muscidae [Part, Lieferung 182]. In: Lindner E. (ed.) Die Fliegen der palaearktischen Region 63B: 1‒48. Schweizerbart, Stuttgart.

Hennig W. 1955b. Muscidae [Part, Lieferung 185]. In: Lindner E. (ed.) Die Fliegen der palaearktischen Region 63B: 49‒96. Schweizerbart, Stuttgart.

Hennig W. 1965. Vorarbeiten zu einem phylogenetischen System der Muscidae (Diptera: Cyclorrhapha). Stuttgarter Beiträge zur Naturkunde 141: 1‒100.

Kutty S.N., Pape T., Pont A.C., Wiegmann B.M. & Meier R. 2008. The Muscoidea (Diptera: Calyptratae) are paraphyletic: evidence from four mitochondrial and four nuclear genes. Molecular Phylogenetics and Evolution 49 (2): 639‒652.

Kutty S.N., Pont A.C., Meier R. & Pape T. 2014. Complete tribal sampling reveals basal split in Muscidae (Muscidae), confirms saprophagy as ancestral feeding mode, and reveals an evolutionary correlation between instar numbers and carnivory. Molecular Phylogenetics and Evolution 78: 349‒364.

Kutty S.N., Meusemann K., Beyless K.M., Marinho M.A.T., Pont A.C., Zhou X., Misof B., Wiegmann B.M., Yeates D., Cerretti P., Meier R. & Pape T. 2019. Phylogenomic analysis of Calyptratae: resolving the phylogenetic relationships within a major radiation of Diptera. Cladistics 35: 605‒622.

Michelsen V. 2007. Eginia ocypterata (Meigen) (Diptera: Muscidae), an overlooked West Palaearctic parasitoid of Diplopoda, with an update of its known occurrence in Europe. Studia Dipterologica 13: 361‒376.

Michelsen V. 2011. A new European species of Drymeia Meigen (Diptera: Muscidae) near D. brumalis (Rondani), with observations of a unique prestomal teeth structure. Zootaxa 3023 (1): 51‒60.

Michelsen V. 2017. Tapantiomyia enigmatica, new genus and species proposed for a stilt-legged and otherwise bizarre coenosiine fly (Diptera: Muscidae) from Costa Rica. Zootaxa 4277 (4): 583‒590.

Michelsen V. 2019. Macaronesian Muscidae (Diptera). I. The genus Hebecnema Schnabl with description of a new Canarian endemic species and a review of the European fauna. Zootaxa 4706 (2): 332‒348.

Michelsen V. 2021. Macaronesian Muscidae (Diptera). III. First record of the genus Spilogona Schnabl based on two new endemic species from the Azores and Madeira. Zootaxa 4952 (1): 128–134.

Michelsen V. & Pape T. 2017. Ulurumyiidae ‒ a new family of calyptrate flies (Diptera). Systematic Entomology 42: 826‒836.

Moores A. & Savage J. 2005. A taxonomic revision of Piezura Rondani (Diptera: Fanniidae). Zootaxa 1096 (1): 41‒59.

Nihei S.S. & de Carvalho C.J.B. 2007. Phylogeny and classification of Muscini (Diptera, Muscidae). Zoological Journal of the Linnean Society 149: 493‒532.

Nihei S.S. & de Carvalho C.J.B. 2009. The Muscini flies of the World (Diptera, Muscidae): identification key and generic diagnoses. Zootaxa 1976 (1): 1‒24.

Patitucci L.D., Mariluis J.C. & Aballay F.H. 2011. A new species of the South American genus Arthurella Albuquerque (Diptera: Muscidae), with a key to species and new records. Zootaxa 2810 (1): 56‒62.

Pereira-Colavite A. & de Carvalho C.J.B. 2012. Taxonomy of Neomuscina Townsend (Diptera, Muscidae) from Brazil. Zootaxa 3504 (1): 1‒55.

Pérez S., Focaça J.M., Wolff M. & de Carvalho C.J.B. 2020. Morphological phylogeny of Reinwardtia Brauer & Bergenstamm (Diptera, Muscidae), with the description of a new species from the Neotropical region. Systematics and Biodiversity 18 (5): 1‒11.

Pont A.C. 1977. A revision of the Australian Fanniidae (Diptera: Calyptrata). Australian Journal of Zoology, Supplementary Series 51: 1‒60.

Pont A.C. 2005. The genus Huckettomyia Pont & Shinonaga, 1970, in North-Western Europe (Diptera, Muscidae). Studia Dipterologica 12: 9‒11.

Pont A.C. & Shinonaga S. 1970. A new genus of Muscidae from Palaearctic East Asia (Diptera, Muscidae). Japanese Journal of Sanitary Zoology 21: 193‒199.

Pont A.C. & Vikhrev N.E. 2009. A second species of the genus Huckettomyia Pont & Shinonaga (Diptera: Muscidae). Studia Dipterologica 16: 101‒105.

Raad H., Ferveur J.-F., Ledger N., Capovilla M. & Robichon A. 2016. Functional gustatory role of chemoreceptors in Drosophila wings. Cell Reports 15: 1442‒1454.

Rognes K. 1992. Blowflies (Diptera, Calliphoridae) of Fennoscandia and Denmark. Fauna Entomologica Scandinavica 24: 1‒272.

Savage J. 2009. A new genus and new species of Neotropical Reinwardtiini (Diptera: Muscidae). Annals of the Entomological Society of America 102 (3): 354‒359.

Savage J. & Sorokina V. 2021. Review of the North American fauna of Drymeia Meigen (Diptera, Muscidae) and evaluation of DNA barcodes for species-level identification in the genus. Zookeys 1024: 31‒89.

Savage J. & Wheeler T.A. 2004. Phylogeny of the Azeliini (Diptera: Muscidae). Studia Dipterologica 11: 259‒299.

Schuehli G.S. & de Carvalho C.J.B. 2005. Revision and cladistics of the Neotropical genus Pseudo-ptilolepis Snyder (Diptera, Muscidae). Revista brasileira de Zoologia 22 (1): 23‒34.

Skidmore P. 1985. The Biology of the Muscidae of the World. Series Entomologica 29. Kluwer Academic Publishers, Dordrecht, the Netherlands.

Soares E.D.G. 2008. Reinwardtiinae (Diptera: Muscidae) é um Grupo monofilético?: uma Abordagem cladística morfológica e molecular. PhD Thesis, Universidade Federal do Paraná, Brazil.

Valmalette J.C., Raad H., Qiu N., Ohara S., Capovilla M. & Robichon A. 2015. Nano-architecture of gustatory chemosensory bristles and trachea in Drosophila wings. Scientific Reports 5 (14198): 1‒11.

Yan L., Pape T., Meusemann K., Kutty S.N., Meier R., Bayless K.M. & Zhang D. 2021. Monophyletic blowflies revealed by phylogenomics. BMC Biology 19 (230): 1‒14.

Zielke E. 2016. Description of a new species of Drymeia Meigen, 1826 (Diptera: Muscidae) from Tajikistan. Acta Zoologica Bulgarica 68: 15‒20.

Zumpt F. 1973. The Stomoxyine Biting Flies of the World (Diptera: Muscidae). Gustav Fischer Verlag, Stuttgart.

How to Cite
Michelsen, V. (2022). Costal vein chaetotaxy, a neglected character source in Fanniidae and Muscidae (Diptera: Calyptratae). European Journal of Taxonomy, 826(1), 94-134.
Research article