Allantocystis

Allantocystis
Scientific classification
Domain:	Eukaryota
(unranked):	Sar
(unranked):	Alveolata
Phylum:	Apicomplexa
Class:	Conoidasida
Subclass:	Gregarinasina
Order:	Eugregarinorida
Suborder:	Aseptatorina
Family:	Allantocystidae
Genus:	Allantocystis
Binomial name
	Allantocystis dasyhelei; Keilin, 1920

Allantocystis is a genus in the family Allantocystidae.[1] Its only species is Allantocystis dasyhelei, a gregarine parasite of the larval biting midge Dasyhelea obscura.[2]

Description

A. dasyhelei are found in the midgut of the host larva as 70 μm by 20 μm forms, running parallel to the host body. They are unique from other Gregarine parasites in that their cysts are elongated, rather than spherical.[2]

Taxonomy

A. dasyhelei is the only species in the genus Allantocystis. Allantocystis is the only genus in the family Allantocistidae.[1]

History

A. dasyhelei was described by David Keilin in 1920 from larval biting midges he found in the decomposing sap of infected Elm and Horse-chestnut trees in Cambridge.[2][3]

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References

Levine ND (1977). "Checklist of the species of the aseptate gregarine families Aikinetocystidae, Diplocystidae, Allantocystidae, Schaudinnellidae, Ganymedidae and Enterocystidae". J Invert Path. 29 (2): 175–181. doi:10.1016/0022-2011(77)90191-4.
Keilin D (March 1920). "On two new Gregarines, Allantocystis dasyhelei N.G., N.Sp., and Dendrorhynchus systeni N.G., N.Sp., parasitic in the alimentary canal of the dipterous larvae, Dasyhelea obscura Winn. and Systenus Sp". Parasitology. 12 (3): 154–158. doi:10.1017/s0031182000014104.
Annales de parasitologie humaine et comparée. Encyclopédie des sciences médico-biologiques. Section--Parasitologie (in French). Masson. 1965. p. 709. Retrieved 24 June 2019.

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[Levine1977-1] Levine ND (1977). "Checklist of the species of the aseptate gregarine families Aikinetocystidae, Diplocystidae, Allantocystidae, Schaudinnellidae, Ganymedidae and Enterocystidae". J Invert Path. 29 (2): 175–181. doi:10.1016/0022-2011(77)90191-4.

[Keilin-2] Keilin D (March 1920). "On two new Gregarines, Allantocystis dasyhelei N.G., N.Sp., and Dendrorhynchus systeni N.G., N.Sp., parasitic in the alimentary canal of the dipterous larvae, Dasyhelea obscura Winn. and Systenus Sp". Parasitology. 12 (3): 154–158. doi:10.1017/s0031182000014104.

[Annales_de_parasitologie_humaine_et_comparée_1965_p._709-3] Annales de parasitologie humaine et comparée. Encyclopédie des sciences médico-biologiques. Section--Parasitologie (in French). Masson. 1965. p. 709. Retrieved 24 June 2019.