Water mites from Mount Kinabalu and the Crocker Range, Borneo, Malaysia (Acari: Hydrachnidia), with the description of 34 new species
Smit, Harry
Pešić, Vladimir
Zootaxa
2014
3876
1
1
71
K. Viets, 1935
K. Viets
1935
[151,738,1396,1422]
Arachnida
Hygrobatidae
Atractides
Animalia
Trombidiformes
20
21
Arthropoda
species
cognatus
Atractides
Material examined. 0/1/0, Mahua stream, downstream of national park entrance, CrockerRange, Borneo, Malaysia, 5º 46.491 N116º 25.770 E, alt. 865 masl., 22-ix-2012; 2/1/0 (1/1/0 mounted), Mahua stream at crossing with main road, CrockerRange, Borneo, Malaysia, 5º 45.225 N116º 26.085 E, alt. 752 masl., 22-ix-2012. Compared material. Atractides cognatus( K. Viets, 1935): Lectotype♂, here designated, SMF4423 Atractides spatiosus cognatus♂, type, K.Viets 42771, Sumatra, Wai Negre, Bach, 22.7.1929Thienem. coll; Paralectotype♀, here designated, SMF4433 Atractides spatiosus cognatus♀, type, K.Viets 42772, Sumatra, Urwaldbach, 1.2.1929Thienem coll. The original description does not contain a typedesignation.
Remarks. This species was originally described by K. Viets (1935)as subspecies of A. spatiosus. Later on Lundblad (1971)synonymized it with the stem species, but Pešić & Smit (2009)rejected this synonymization and raised A. spatiosus cognatusto full species rank, a point of view confirmed by our re-examination of the typeseries of A. spatiosusand A. cognatus. The latter species can be distinguished from A. spatiosusby the shorter S-1/2 interspace in both sexes and the slightly sclerotized excretory pore. Most character states of the Borneo specimens suggest attribution to A. cognatusbut the diagnostic features of A. spatiosusand A. cognatusneed reconsideration based on material from a larger geographical area. Probably, the populations from Thailandand Malaysiaassigned by Pešić & Smit (2009)to A. cognatusrepresent an undescribed species ( Pešić et al. 2012b).
Distribution. Indonesia(Sumatra, E Java - K. Viets 1935) Borneo (our study). TABLE 1.Measurements of Atractides cognatus(K. Viets, 1935)and A. propatulus(K. Viets, 1935)from Borneo. A.cognatus A. propatulus