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Orthonevra

{{Short description|Genus of flies}}

{{Automatic taxobox

| image = Orthonevra.nobilis.-.lindsey.jpg

| image_caption = Orthonevra geniculata

| display_parents = 2

| taxon = Orthonevra

| authority = Macquart, 1829

| type_species = Chrysogaster elegans

| type_species_authority = Meigen, 1822{{cite book |last1=Meigen |first1=Johann Wilhelm |title=Systematische Beschreibung der bekannten europäische n zweiflugeligen Insekten |date=1822 |publisher=Dritter Theil. Schulz-Wundermann |location=Hamm |pages=x, 416, pls. 22–32 |url=https://www.biodiversitylibrary.org/item/49298#page/7/mode/1up |access-date=14 April 2019}}

| synonyms = * Orthoneura Loew, 1843

}}

Orthonevra is a genus of flies in the family Syrphidae They are worldwide in distribution with at least 59 species identified concentrated mainly in eastern North America and Europe. Species of the genus Orthonevra are commonly called mucksuckers after the larvae which have been found in organic rich mud, i.e. muck. This genus belongs to the tribe Brachyopini that includes the prominent genera Melanogaster, Brachyopa, Neoascia and Sphegina.

Description

Species of the genus Orthonevra have black heads with blue to purple reflections. Many species have distinctive eye stripes. The antennae are somewhat elongate. (see image) The frons is wrinkled with silvery spots at sides of antennae. The thorax with small punctures dorsally and in several species the body is covered with scale-like pile. Wing vein M1 curves away from the wing tip.(see images)

file:Orthonevra head diagram.png

file:Orthonevra wing diagram.png

file:Orthonevra nitida engravers eye, face, pg county, md 2014-07-16-20.44.03 ZS PMax.jpg

Guides

Seman reviewed North American species as of 1964

{{cite journal |last=Sedman |first=Yale S |year=1964 |title= The Chrysogaster (Orthonevra) Bellula Group In North America |journal=Proceedings of the Entomological Society of Washington |volume=66 |pages=169-201 |url=https://www.biodiversitylibrary.org/page/16197550#page/527/mode/1up}}

{{cite journal |last=Sedman |first=Y. S. |year=1966 |title=The Chrysogaster (Orthonevra) pictipennis group in North America |journal=Proceedings of the Entomological Society of Washington |volume=68 |pages=185-194 |url=https://www.biodiversitylibrary.org/page/26389051#page/497/mode/1up}}

The most comprehensive of existing keys to European Orthonevra species is that of van Veen (2004), {{cite book |last= Van Veen |first= M.P. |title= Hoverflies of Northwest Europe, Identification Keys to the Syrphidae |type= Hardback |year= 2004 |publisher= KNNV Publishing |location= Utrecht |isbn= 90-5011-199-8 |pages= 254 }}

M.C.D.Speight has also documented European species. {{cite book |last=Speight |first=M.C.D |author-link= |date=2011 |title= Species accounts of European Syrphidae (Diptera), Glasgow2011 |url=https://www.diptera.info/downloads/StN_Species_Accounts_Glasgow_2011.pdf|location=Dublin |publisher=Syrph the Net publications |page= |isbn= }}

Species

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{{Expand list|date=August 2009}}

References

{{Reflist}}

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Category:Brachyopini

Category:Hoverfly genera

Category:Taxa named by Pierre-Justin-Marie Macquart

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