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{{Automatic taxobox
| image = Clintonia uniflora 4915 cropped.jpg
| image_caption = Eulonchus sapphirinus
| taxon = Eulonchus
| authority = Gerstaecker, 1856
| type_species = Eulonchus smaragdinus
| type_species_authority = Gerstaecker, 1856
}}Eulonchus is a genus of small-headed flies in the family Acroceridae. There are six described species in Eulonchus.[[2][3][4] The genus is found in North America. Adults have a metallic blue, green or sometimes purple coloration, giving them a jewel-like appearance. A common name for flies in the genus is the North American jewelled spider flies.[5] Adults are also known as "sapphires" or "emeralds".[1]]GallerySpeciesThese six species belong to the genus Eulonchus: - Eulonchus halli Schlinger, 1960 i c g b[2] (Hall's sapphire)
- Eulonchus marginatus Osten Sacken, 1877 i c g b[3] (Sombre Sapphire or Emerald)
- Eulonchus marialiciae Brimley, 1925 i c g[4] (Mary-Alice’s Emerald, Mary Alice's small-headed fly)
- Eulonchus sapphirinus Osten Sacken, 1877 i c g b[3] (Northern Sapphire or Emerald)
- Eulonchus smaragdinus Gerstacker, 1856 c g b (Synonym: E. smaragdinus pilosus Schlinger, 1960 i c g[2]) (Southern Emerald or Sapphire)
- Eulonchus tristis Loew, 1872 i c g b (Dusky Sapphire)
Data sources: i = ITIS,[ c = Catalogue of Life,[2] g = GBIF,[3] b = Bugguide.net[4]]DistributionMost species of Eulonchus are distributed west of the Rocky Mountains in the United States, northwards to Canada and southwards to Baja California, Mexico. The exception is Eulonchus marialiciae, which is known only from a small area in the Great Smoky Mountains in North Carolina, though future studies are needed to confirm the species' true range.[5] HostsFlies in the genus attack spiders in the Euctenizidae and Antrodiaetidae families.[5] References1. ^{{cite web|title=Flying jewels spell death for tarantulas: Study of a North American spider fly genus|url=https://www.sciencedaily.com/releases/2016/10/161005114231.htm|website=ScienceDaily|publisher=Pensoft Publishers|date=5 October 2016}}
2. ^1 {{cite journal|last=Schlinger|first=E. I.|year=1960|title=A Review of the Genus Eulonchus Gerstaecker. Part I. The Species of the Smaragdinus Group (Diptera: Acroceridae)|journal=Annals of the Entomological Society of America|volume=53|issue=3|pages=416–422|doi=10.1093/aesa/53.3.416}}
3. ^1 {{cite journal|last=Osten Sacken|first=C.R.|year=1877|title=Western Diptera: Descriptions of new genera and species of Diptera from the region west of the Mississippi and especially from California|url=https://biodiversitylibrary.org/page/38663357|journal=Bulletin of the United States Geological and Geographical Survey of the Territories|volume=3|issue=189–354|doi=10.5962/bhl.title.57939}}
4. ^{{cite journal|last=Brimley|first=C.S.|year=1925|title=New species of Diptera from North Carolina|url=https://biodiversitylibrary.org/page/24738115|journal=Entomological News|volume=36|pages=73–77}}
5. ^1 2 {{Cite web| title=Browse Eulonchus| url=http://www.catalogueoflife.org/col/browse/tree/id/8b3dbfc095f134321db435da73d45eee| website=Catalogue of Life| accessdate=2018-04-23}}
6. ^1 2 {{Cite web| title=Eulonchus| url=https://www.gbif.org/species/1459949| website=GBIF| accessdate=2018-04-23}}
7. ^1 2 {{Cite web| title=Eulonchus Genus Information| url=https://bugguide.net/node/view/40630| website=BugGuide.net| accessdate=2018-04-23}}
8. ^1 2 3 {{Cite journal| last1 = Borkent | first1 = C.J.| last2 = Gillung | first2 = J.P.| last3 = Winterton | first3 = S.L.| date = 2016| title = Jewelled spider flies of North America: a revision and phylogeny of Eulonchus Gerstaecker (Diptera, Acroceridae)| journal = ZooKeys| volume = 619| doi = 10.3897/zookeys.619.8249| doi-access = free| pmc = 5090163| pmid = 27829790}}
[5][6][7][8]
}}Further reading{{refbegin}}
| last1 = Arnett | first1 = Ross H. Jr.
| date = 2000
| title = American Insects: A Handbook of the Insects of America North of Mexico
| url = https://books.google.com/books?id=DKzAmSDdLtsC
| publisher = CRC Press
| edition = 2nd
| isbn = 0-8493-0212-9
}}
| last1 = Charles | first1 = H. Curran
| date = 1934
| title = The families and genera of North American Diptera
| doi = 10.5962/bhl.title.6825
| doi-access = free
}}
| last1 = McAlpine | first1 = J.F.
| last2 = Petersen | first2 = B.V.
| last3 = Shewell | first3 = G.E.
| last4 = Teskey | first4 = H.J.
| last5 = Vockeroth | first5 = J.R.
| display-authors = 4
| date = 1987
| title = Manual of Nearctic Diptera
| publisher = Research Branch Agriculture Canada
| isbn = 978-0660121253
}}{{refend}}External links{{refbegin}}
| accessdate = 2018-04-23
| title = Diptera.info
| url = https://diptera.info/
}}{{refend}}{{clear}}{{Taxonbar|from=Q14660283}}{{Nemestrinoidea-stub}} 5 : Acroceridae|Articles created by Qbugbot|Nemestrinoidea genera|Diptera of North America|Taxa named by Carl Eduard Adolph Gerstaecker |