Atractides

Gerecke, Reinhard, 2003, Water mites of the genus Atractides Koch, 1837 (Acari: Parasitengona: Hygrobatidae) in the western Palaearctic region: a revision, Zoological Journal of the Linnean Society 138, pp. 141-378 : 203

publication ID	https://doi.org/ 10.1046/j.1096-3642.06-0.00051.x
persistent identifier	https://treatment.plazi.org/id/96048783-0E05-FFA7-FF6A-A984FD0AFB27
treatment provided by	Carolina
scientific name	Atractides
status

Treatment

ATRACTIDES View in CoL TIVDIAE ( SOKOLOW, 1926)

Atractides nodipalpis tivdiae Sokolow, 1926

syn. to A. nodipalpis Thor, 1899 : syn. nov.

Type series: Lectotype male, here designated: ZISP 564 ♀ ♂ Megapus nodipalpis Thor var. tivdiae n.var. J.Sokolow; 16.7.20..64/4, one male, mounted together with two females (paralectotypes). State of conservation: all specimens damaged by crushing, with broken legs, fractures in coxae; visibility hampered by crystallization of mounting fluid. Locus typicus: Karelia, Fluss Tivdia (Sandal-See) in Elodea , 18.VII.1920 [difference between date on slide and date in publ. = error?]

Description and Discussion: Sokolow considered the relatively slender P- 4 in both sexes to be a diagnostic feature of his new taxon. However, in A. nodipalpis , a considerable variability in shape of P-4 was found, and palp measurements of Sokolow’s types lie within the range of variability documented for that species. Moreover, no differences could be found with regard to other characters and measurements; A. tivdiae should therefore be considered a synonym of A. nodipalpis .