Archocyrtus

Archocyrtus; Temporal range: Callovian PreꞒ Ꞓ O S D C P T J K Pg N ↓
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Diptera
Family:	Acroceridae
Subfamily:	†Archocyrtinae; Ussatchov, 1968
Genus:	†Archocyrtus; Ussatchov, 1968
Type species
	†Archocyrtus gibbosus; Ussatchov, 1968
Species
	†A. gibbosus; †A. kovalevi;
Synonyms
	Juracyrtus Nartshuk, 1996

Archocyrtus is an extinct genus of small-headed flies in the family Acroceridae. The genus is known from compression fossils from the Late Jurassic Karabastau Formation of Kazakhstan.^[1] The genus is the only member of the subfamily Archocyrtinae.^[3]

A study on the holotype specimen of Archocyrtus kovalevi was published by Khramov & Lukashevich (2019). They reported evidence of an extremely long proboscis, almost twice the length of the body of the insect. They suggested that it was probably a pollinator of extinct seed plants belonging to the order Bennettitales.^[4]

Species

Two species belong to the genus Archocyrtus:

†A. gibbosus Ussatchov, 1968
†A. kovalevi (Nartshuk, 1996)^[2]^[1]

References

^ ^a ^b ^c Gillung, Jessica P.; Winterton, Shaun L. (2017). "A review of fossil spider flies (Diptera: Acroceridae) with descriptions of new genera and species from Baltic Amber". Journal of Systematic Palaeontology. 16 (4): 325–350. doi:10.1080/14772019.2017.1289566. S2CID 90493326.
^ ^a ^b Nartshuk, E. P. (1995). "A new fossil acrocerid fly from the Jurassic beds of Kazakhstan (Diptera: Acroceridae)". Zoosystematica Rossica. 4 (2): 313–315.
^ Gillung, Jessica P.; Winterton, Shawn L. (2019). "Evolution of fossil and living spider flies based on morphological and molecular data (Diptera, Acroceridae)". Systematic Entomology. 44 (4): 820–841. doi:10.1111/syen.12358.
^ Khramov, Alexander V.; Lukashevich, Elena D. (2019). "A Jurassic dipteran pollinator with an extremely long proboscis". Gondwana Research. 71: 210–215. doi:10.1016/j.gr.2019.02.004. S2CID 134847380.

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[GillungWinterton2017-1] Gillung, Jessica P.; Winterton, Shaun L. (2017). "A review of fossil spider flies (Diptera: Acroceridae) with descriptions of new genera and species from Baltic Amber". Journal of Systematic Palaeontology. 16 (4): 325–350. doi:10.1080/14772019.2017.1289566. S2CID 90493326.

[Nartshuk1996-2] Nartshuk, E. P. (1995). "A new fossil acrocerid fly from the Jurassic beds of Kazakhstan (Diptera: Acroceridae)". Zoosystematica Rossica. 4 (2): 313–315.

[Gillung2019-3] Gillung, Jessica P.; Winterton, Shawn L. (2019). "Evolution of fossil and living spider flies based on morphological and molecular data (Diptera, Acroceridae)". Systematic Entomology. 44 (4): 820–841. doi:10.1111/syen.12358.

[4] Khramov, Alexander V.; Lukashevich, Elena D. (2019). "A Jurassic dipteran pollinator with an extremely long proboscis". Gondwana Research. 71: 210–215. doi:10.1016/j.gr.2019.02.004. S2CID 134847380.

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