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Acrocera orbiculus
Acrocera orbiculus in Meigen Europäischen Zweiflügeligen
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Diptera
Family:	Acroceridae
Genus:	Acrocera
Species:	A. orbiculus
Binomial name
Acrocera orbiculus (Fabricius, 1787)
Synonyms
Acrocera albipes Meigen, 1804 Acrocera borealis Zetterstedt, 1838 Acrocera hubbardi Cole, 1919 Acrocera hungerfordi Sabrosky, 1944 Acrocera tumida Erichson, 1840 Ogcodes pubescens Latreille, 1805 Paracrocera kaszabi Majer, 1977 Paracrocera manevali Séguy, 1926 Paracrocera minuscula Séguy, 1934 Syrphus globulus Panzer, 1802 Syrphus orbiculus Fabricius, 1787

Acrocera orbiculus, also known as the top-horned hunchback, is a species of fly belonging to the family Acroceridae. The species has a holarctic distribution, ranging from North America to the Palaearctic.

Etymology

The specific name is the Latin diminutive noun orbiculus, meaning 'a small disk'. As a noun in apposition, the suffix does not alter to reflect the gender of the genus.

Description

"Antennae placed at the extreme top of the head, ending in a long thin arista. Venation very much reduced. Proboscis absent, or very short and stumpy"

Biology

The larvae are endoparasites of spiders in the families Amaurobiidae, Clubionidae and Lycosidae.

References

1. Cole, F. R. (1919). "The Dipterous Family Cyrtidae in North America". Transactions of the American Entomological Society. 45 (1): 1–79. JSTOR 25077002.
2. Majer, J. (1977). "Data to the Acroceridae (Diptera) fauna of Mongolia". Folia Entomologica Hungarica. 30: 105–107.
3. ^ Kehlmaier, Christian; Almeida, Jorge Mota (2014). "New host records for European Acroceridae (Diptera), with discussion of species limits of Acrocera orbiculus (Fabricius) based on DNA-barcoding" (PDF). Zootaxa. 3780 (1): 135–52. doi:10.11646/zootaxa.3780.1.5. PMID 24871830.
4. Lewis, C. T.; Short, C. (1879). "orbĭcŭlus". A Latin Dictionary. Founded on Andrews' edition of Freund's Latin dictionary (Revised, enlarged ed.). Oxford: Clarendon Press.
5. Verrall, G. H., 1909 Stratiomyidae and succeeding families of the Diptera Brachycera of Great Britain British flies Volume 5 London : Gurney and Jackson, 1909.BHL Full text with illustrations

External links

• GBIF
• External images

• Acroceridae
• Insects described in 1787
• Diptera of North America
• Asilomorph flies of Europe
• Endoparasites