Acrotritia closteros, Niedbała, 2006

Niedbała, Wojcieh, 2006, New species of palaearctic Euphthiracaridae (Acari, Oribatida), Zootaxa 1175, pp. 43-54: 53-54

publication ID

http://doi.org/ 10.5281/zenodo.2645867

publication LSID

lsid:zoobank.org:pub:5B0620B3-6B5D-4ACC-86D6-CD333E0A26AE

persistent identifier

http://treatment.plazi.org/id/0382D130-BB23-3D06-BB7A-C96DFC82E571

treatment provided by

Plazi

scientific name

Acrotritia closteros
status

sp. nov.

Acrotritia closteros   sp. nov.

(Figs 3. G–L)

Description

Measurements of holotype: prodorsum: length 210, height 88.5, sensillus 58.2, setae: in 121, le 83.5, ro 55.7, ex 10.1; notogaster: length 479, height 353, setae: c 1 60.6, h 1 85.8, ps 1 75.7; genitoaggenital plate 162 x 50.5; anoadanal plate 207 x 30.3

Colour yellow, surface of body punctate.

Prodorsum with one pair of simple lateral carinae. Sensillus fairly long with head as broad spindle covered with sparse minute spines. Dorsal setae stout, erect, strongly barbed in distal half, exobothridial setae minute; in> le> ro> ex.

Notogaster with relatively short (c 1 <½ c 1 ­d 1) setae covered with small spines in distal half. Setae c 3 remote from anterior margin, setae c 1 and c 2 far from margin. Opening of opisthosomal gland and arrangement of lyrifissures and vestigial setae typical of genus.

Ventral region, setae h of mentum considerably longer than distance between them. Formula of epimeral setae: 2­0­2­2. Seven pairs of minute genital setae with formula: 6: 1.

Two pairs of minute aggenital setae present, arranged longitudinally. Anal setae an 1 and an 2 simple, rough, smaller than adanal setae covered with small spines; lyrifissures iad located anteriorly of ad 3 setae.

Legs setation and solenidiotaxy (without tarsi): I: 1­2­3 (2)­4(1), II: 1­3­3(1)­4 (1), III: 2­2­2(1)­3(1), IV: 2­1­1­2(1). All tarsi monodactylous.

Types

Holotype: Algeria, Alger, Rouiba , litter from citrus orchard, 24 X 1984, leg. W. Niedbała; three paratypes: Aures, cedar wood of SGAG, humus of Fraxinus xanthixoloides   at 1800 m, 26 IX 1985, leg. K. de Smet.  

Etymology The name of the new species closteros   is Latinized Greek for “a spindle” and alludes to the shape of the head of sensilli.

Comparison

This species is easy distinguishable from other Acrotritia   species by the combinations of a monodactylous tarsi, the shape of sensillus with broadly fusiform head, and the presence of 7 pairs of genital setae.

Acknowledgements

I am very grateful to all those who collected the specimens referred to above.

References

Aoki, J. (1980) A revision of the Oribatid mites of Japan. II. The family Euphthiracaridae. Acta Arachnologica, 29, 9–23.

Berlese, A. (1904) Acari nuovi. Manipulus III. Redia, 2, 10–32.

Hammer, M. (1977) Investigations on the oribatid fauna of North­west Pakistan. Biologiske Skrifter det Kongelige Danske Videnskabernes Selskab, 21, 1–71.

Jacot, A.P. (1930) Oribatid mites of the subfamily Phthiracarinae of the Norheastern United States. Proceedings of Boston Society of Natural History, 39, 209–261.

Mahunka, S. (1990) A survey of the superfamily Euphthiracaroidea Jacot, 1930 (Acari: Oribatida). Folia Entomologica Hungarica, 51, 37–80.

Niedbała, W. (2000) The ptyctimous mites fauna of the Oriental and Australian regions and their centres of origin (Acari: Oribatida). Genus, supplement, 1–489.

Niedbała, W. (2004) Ptyctimous mites (Acari, Oribatida) of the Neotropical Region. Annales Zoologici, 54, 1–288.

Walker, N.A. (1965) Euphthiracaroidea of California Sequoia litter: with a reclassification of the families and genera of the world (Acarina: Oribatei). Fort Hays Studies, Science ser. 3, 154 pp.

Willmann, C. (1919) Diagnosen einiger neuen Oribatiden aus der Umgegend Bremens. Abhandlungen vom Naturwissenschaftlichen Verein zu Bremen, 24, 552–554.