Campsicnemus

{{short description|Genus of flies}}

{{Automatic taxobox

| image = Campsicnemus curvipes -2012-09-02.jpg

| image_caption = Campsicnemus curvipes

| taxon = Campsicnemus

| authority = Haliday in Walker, 1851

| type_species= Dolichopus scambus

| type_species_authority = Fallén, 1823

| synonyms_ref = {{cite journal|last1=Evenhuis|first1=N. L.|title=Review of the Hawaiian Campsicnemus species from Kaua'i (Diptera: Dolichopodidae), with key and descriptions of new species |journal=Bishop Museum Occasional Papers |date=2003|volume=75|pages=1–34|url=http://hbs.bishopmuseum.org/pubs-online/pdf/op75.pdf|accessdate=9 December 2018}}

| synonyms = *Camptosceles Haliday, 1832
(name suppressed){{cite journal|author=ICZN|author-link=International Commission on Zoological Nomenclature|year=1958|title=Opinion 531. Validation under the Plenary Powers of the name Campsicnemus Haliday, 1851 (Class Insecta, Order Diptera)|url=https://biodiversitylibrary.org/page/34614134|journal=Opinions and Declarations Rendered by the International Commission on Zoological Nomenclature|volume=19|pages=349–360}}

• Ectomus Mik, 1878
• Emperoptera Grimshaw in Grimshaw & Speiser, 1902{{cite journal|last=Evenhuis|first=N. L.|year=2010|title=Morphological and molecular evidence support the synonymy of Emperoptera Grimshaw with Campsicnemus Haliday (Diptera: Dolichopodidae)|url=http://hbs.bishopmuseum.org/pubs-online/pdf/op108p35.pdf|journal=Bishop Museum Occasional Papers|volume=108|pages=35–44}}
• Leptopezina Macquart, 1835
  (nomen oblitum)
• Camptoscelus Kertész, 1909

}}

Campsicnemus is a genus of flies in family Dolichopodidae. There are more than 290 described species, made up of 34 Palearctic, 22 Nearctic, seven Afrotropic, 170 Australasian and Oceanian, and seven Indomalayan species.{{cite book|last1=Yang|first1=D.|last2=Zhu|first2=Y.|last3=Wang|first3=M.|last4=Zhang|first4=L.|title=World Catalog of Dolichopodidae (Insecta: Diptera) |date=2006|publisher=China Agricultural University Press|location=Beijing|isbn=9787811171020|pages=1–704}} Some species endemic to the Hawaiian islands are characterized by their lack of wings. After the introduction of invasive ants and other alien species such as wild boar (Sus scrofa) {{cite journal|author=Neal L. Evenhuis|year=1997|title=Review Of Flightless Dolichopodidae (Diptera) In The Hawaiian Islands|url=http://hbs.bishopmuseum.org/pdf/flightless-doli.pdf|journal=Bishop Museum Occasional Papers|volume=53|pages=1–29}} to the islands, some of these flightless species are believed extinct.{{Cite web|url=http://hbs.bishopmuseum.org/bishop/hbsimages/flightless-flies.html|title=Rare Flightless Flies}}

The generic name is derived from the Ancient Greek {{lang|grc|καμψις}} ("curve") and {{lang|grc|κνημη}} ("tibia"). This refers to the modified mid tibia of the males, a male secondary sexual character that is very distinct in Campsicnemus.