Carolinea 77

L amos : Discovery of Belba sculpta M ihel č i č , 1957 175 measuring 150-200 µm; body length 378-480 µm; distribution: China, Japan. . . . . Belba ( B .) sasakawai E nami , 1989 – Seta ps1 smooth, flagellate with a length of 70-110 µm; body length 500-640 µm; distribution: Germany, Spain. . . . . . . . . Belba ( B .) sculpta M ihel č i č , 1957 16(14) Femur II paraxially with a thick, spinelike seta; body length 620-660 µm; distribu­ tion: Pakistan, Turkmenistan . Belba ( B .) meridionalis B ulanova - Z achvatkina , 1962 – Femur II without such a spinelike seta; body length 406-441 µm; distribution: Mongolia . . . . . . . . . . . . . Belba ( B .) prasadi B ayartogtokh , 2000 17(12) Femur II with 7 setae; body length 330 µm; distribution Azerbaijan . . . . . . . . Belba ( B .) aurata K ulijev , 1967 – Femur II with 6 setae . . . . . . . 18 18(17) Trochanteral setation 1-1-2-1, femoral setation 7-6-4-4. . . . . . . . . . 19 – Trochanteral setation 1-1-2-2 . . . . 20 19(18) Femur II with a thick, spinelike seta; body length 420-492 µm; distribution: Russia, Tadjikistan, Uzbekistan. . . . . . . . . . Belba ( B .) bulanovae S ubías , 2016 – Femur II without spinelike seta; body length 582 µm; distribution: Kirghizia (Russia). . . . . . . . . Belba ( B .) tenuisetosa B ulanova - Z achvatkina , 1962 20(18) Chaetotaxy of genu I-IV: 4(1)-4(1)-4(1)- 4; apophysis Ba present; sensillus rod- like, 2-3x length of interlamellar seta; body length 480 µm; distribution: Rus- sia. . . . . . . . . . . Belba ( B .) limasetosa B ulanova - Z achvatkina , 1962 – Chaetotaxy of genu I-IV: 4(1)-4(1)-3(1)- 3, apophysis Ba absent, femoral setation 7-7-5-5 . . . . . . . . . . . . . 21 21(20) Sensillus smooth, distally flagellate; no- togastral, interlamellar, lamellar and ro- stral setae smooth; body length 549-671 µm; distribution: Mongolia. . . . Belba ( B .) crassisetosa B ayartogtokh , 2000 – Sensillus barbed, rod-like; notogastral, interlamellar, lamellar and rostral setae distinctly barbed; body length: 520-770 µm; distribution: China, Europe, Paki- stan, Russia . . . . . . . . . Belba ( B .) rossica B ulanova - Z achvatkina , 1962 Comments Belba pseudocorynopus and Belba bartosi W ink ­ ler , 1955 are seen as junior synonyms of Belba patelloides by S ubías (2019), while M iko (2006) treats B. pseudocorynopus as a junior synonym of B. bartosi , without viewing either species as being a synonym of B. patelloides. I here follow B eck et al. (2018) in rejecting all of these syno- nymies. While the morphology of B. pseudoco­ rynopus is well documented by M ärkel & M eyer (1960), the description of B. bartosi is very patchy and leaves out critical details. The leg setation in particular, with the exception of femur IV, is neit- her discussed nor illustrated in W inkler (1955, 1957). In the latter, more detailed contribution, only 6 pairs of dorsal notogastral setae are men- tioned in the text and are visible in the illustration of the dorsal aspect, while a seventh, more clo- sely set pair is observed in the illustration of the posterior view. The seta which is not figured ap- pears to be seta c1.With reference to the original publications, Belba bartosi differs from B . pseu­ docorynopus in the shape of its bothridium and in having much shorter interlamellar setae (B eck et al. 2018). Evidently the probably still existing ho- lotype and three paratypes of B . bartosi in Pra- gue need to be inspected and redescribed before any definite conclusions about synonymies invol- ving this species may be drawn. The species Belba ( B .) daghestanica was not in- cluded in the species key because the original description is too brief and misses significant detail in several places. For example, no informa- tion is supplied on the presence or absence of prodorsal apophyses Ba, Bp or the ventral apo- physes, E2a, E2p, Va, Vp, and the interlamellar setae are not mentioned or depicted. A major diagnostic feature according to its author is the quadrate apophysis Sp. Only two species in the Belba keys of B ulanova -Z achvatkina (1962, 1967, 1975) possess this trait, the other one being Bel­ ba tenuisetosa . However, T olstikov & L yashchev (1996) who redescribed B . tenuisetosa , illus- trate and comment on a tuberculate apophysis Sp with a broad base and a rounded tip in this species instead. The shape of Sp is likely to be subject to both ambiguities of interpretation and to intraspecific variation, and in the case of B . daghestanica too, may possibly not be a very reliable species diagnostic trait. Nevertheless, it is possible to distinguish the taxon from other species. Based on B ulanova - Z achvatkina (1962, 1967, 1975), Belba daghesta­ nica differs from all members of Belba except B . bulanovae , B . meridionalis and B . sculpta in the combined possession of the traits: femur II with a thick spinelike seta; propodolateral apo-