Eulonchus halli

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This page should be cited as follows (rationale):
Borkent C, Gillung J, Winterton S (2016) Jewelled spider flies of North America: a revision and phylogeny of Eulonchus Gerstaecker (Diptera, Acroceridae). ZooKeys (619) : 103–146, doi. Versioned wiki page: 2016-09-27, version 101523, https://species-id.net/w/index.php?title=Eulonchus_halli&oldid=101523 , contributors (alphabetical order): Pensoft Publishers.

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BibTeX:

@article{Borkent2016ZooKeys,
author = {Borkent, Christopher J. AND Gillung, Jessica P. AND Winterton, Shaun L.},
journal = {ZooKeys},
publisher = {Pensoft Publishers},
title = {Jewelled spider flies of North America: a revision and phylogeny of Eulonchus Gerstaecker (Diptera, Acroceridae)},
year = {2016},
volume = {},
issue = {619},
pages = {103--146},
doi = {10.3897/zookeys.619.8249},
url = {http://zookeys.pensoft.net/articles.php?id=8249},
note = {Versioned wiki page: 2016-09-27, version 101523, https://species-id.net/w/index.php?title=Eulonchus_halli&oldid=101523 , contributors (alphabetical order): Pensoft Publishers.}

}

RIS/ Endnote:

TY - JOUR
T1 - Jewelled spider flies of North America: a revision and phylogeny of Eulonchus Gerstaecker (Diptera, Acroceridae)
A1 - Borkent C
A1 - Gillung J
A1 - Winterton S
Y1 - 2016
JF - ZooKeys
JA -
VL -
IS - 619
UR - http://dx.doi.org/10.3897/zookeys.619.8249
SP - 103
EP - 146
PB - Pensoft Publishers
M1 - Versioned wiki page: 2016-09-27, version 101523, https://species-id.net/w/index.php?title=Eulonchus_halli&oldid=101523 , contributors (alphabetical order): Pensoft Publishers.

M3 - doi:10.3897/zookeys.619.8249

Wikipedia/ Citizendium:

<ref name="Borkent2016ZooKeys">{{Citation
| author = Borkent C, Gillung J, Winterton S
| title = Jewelled spider flies of North America: a revision and phylogeny of Eulonchus Gerstaecker (Diptera, Acroceridae)
| journal = ZooKeys
| year = 2016
| volume =
| issue = 619
| pages = 103--146
| pmid =
| publisher = Pensoft Publishers
| doi = 10.3897/zookeys.619.8249
| url = http://zookeys.pensoft.net/articles.php?id=8249
| pmc =
| accessdate = 2024-12-23

}} Versioned wiki page: 2016-09-27, version 101523, https://species-id.net/w/index.php?title=Eulonchus_halli&oldid=101523 , contributors (alphabetical order): Pensoft Publishers.</ref>

See also the citation download page at the journal.


Taxonavigation

Ordo: Diptera
Familia: Acroceridae
Genus: Eulonchus

Name

Eulonchus halli Schlinger, 1960Wikispecies linkPensoft Profile

  • Eulonchus halli Schlinger, 1960: 418

References

Arnaud 1979[1]: 203 (holotype depository); Schlinger 1981[2]: 576 (figs); Poole 1996[3]: 36 (checklist).

Common name

Hall’s Sapphire.

Diagnosis

Proboscis curved and extending beyond abdomen apex (but shorter than wing length), ocellar tubercle bifurcate; calypter margin pale; legs dark brown-black; abdomen dark brown with reddish metallic hue; extensive white pile on thorax and as bands on abdomen.

Redescription

Body length: 9.8–12.0 mm, Wing length 8.0–10.6 mm. Head. Flagellum dark brown, scape and pedicel brown; male flagellum cylindrical, shorter than head height; clypeus elongate, extending beyond oral cavity, shape rounded with raised ridge dorsally, surface glossy black-brown with sparse pubescence; labial palp brown, extending anteriorly beyond proboscis at point of attachment; margin of oral cavity (parafacial) finely pubescent, lacking pile; proboscis length extending to middle of abdomen; ocellar tubercle bifurcate, apices narrowly digitate and sub-parallel, tubercle height taller than width, median ocellus greatly reduced; occiput metallic blue or metallic purple, occipital pile densely white. Thorax. Metallic green, metallic blue or metallic purple in colour, setal pile white; coxae black with metallic blue sheen; femora dark brown, apices white; tibia brown; tarsi brown; calypter margin yellow or light brown, membrane translucent; haltere entirely dark brown. Abdomen. Metallic green, metallic blue violet or black with metallic green sheen, vestiture white, dominant setae erect, other pile posteriorly directed, marginal band of denser setae on T3–4. Male genitalia (Figs 17A, 18A, 19A). Epandrium rectangular, wide at the apex, with posterior margin concave; gonocoxite deeply emarginate along anterior margin, fenestrae lacking; aedeagus thinned at the apex, only slightly sclerotized.

Type material examined

Holotype male, CAS, “Riverside/ Cal. Mar 7, 34” [white]; “Timberlake/ Coll.” [white]; “on Cryptantha/ intermedia” [white]; “HOLOTYPE/ Eulonchus/ halli/ ♂ Schlinger” [orange]; “Genitalia 51-3-id/ Dissection No./ by E.I. Schlinger” [white]; “California Academy/ of Sciences/ Type No. 6392” [white]; “IMAGE” [green]; “CAS/ Dec-07” [green]; specimen condition: good, proboscis, right flagellum and right front leg broken off and glued to a paper triangle on pin with specimen. Body length: 10.2 mm, Wing length: 9.2 mm.

Other material examined

Listed in Table 3 (Suppl. material 1).

Distribution

(Fig. 20). Nearctic: Southern California (USA) to Baja California (Mexico).

Ecology

Schlinger (1960)[4] notes that this species has a relatively short adult flight period (ca. six weeks) during spring and has a feeding preference on Cryptantha intermedia flowers (Table 2).

Biology

The larval host for this species is unknown.

Comments

Eulonchus halli is a distinctive species that can be distinguished by the dark leg and body colouration, erect white thoracic and abdominal pile, raised bifurcate ocellar tubercle, and a curved proboscis that is shorter than the body length.

Taxon Treatment

  • Borkent, C; Gillung, J; Winterton, S; 2016: Jewelled spider flies of North America: a revision and phylogeny of Eulonchus Gerstaecker (Diptera, Acroceridae) ZooKeys, (619): 103-146. doi

Images

Other References

  1. Arnaud P (1979) A catalog of the types of Diptera in the collection of the California Academy of Sciences. Myia 1, 505 pp.
  2. Schlinger E (1981) Acroceridae. In: McAlpine J Peterson B Shewell G Teskey H Vockeroth J Wood D (Eds) Manual of Nearctic Diptera. Vol. I. Research Branch, Agriculture Canada, Ottawa, Monograph 27: 575–584.
  3. Poole R (1996) Diptera, Lepidoptera, Siphonaptera. Nomina Insecta Nearctica. A checklist of the insects of North America. Vol. 3. Entomological Information Service, Rockville, 1143 pp.
  4. Schlinger E (1960) A review of the genus Eulonchus Gerstaecker. Part I. The species of the smaragdinus group (Diptera: Acroceridae). Annals of the Entomological Society of America 53: 416–422. doi: 10.1093/aesa/53.3.416