Carolinea 77

174 Carolinea 77 (2019) the morphological characters used, the following key to adults of Belba is provisional. 1 Spinae adnatae present; epimere II with 3 setae; trochanter IV with 2 setae; body length 724-884 µm; distribution Canada, USA. . . . . . . . . . . . . Belba . ( Protobelba ) californica ( B anks , 1904) – Spinae adnatae absent. . . . . . . 2 2(1) Notogaster high, with a height to length ratio of 0,55-0,7 : 1; epimere II with 3 or more setae . . . . . . . . . . . . 3 – Notogaster low, with a height to length ratio of about 0,4 : 1; epimere II with 1 seta. . . . . . . . . . . . . . . 7 3(2) Cornicle k present; tubercles Ba not situ- ated at lateral prodorsal margin; setae of c-, l-, and h-series short, smooth, with se- tae c2, la longest; solenidion φ 1 of tibia I longer than tarsus I; mean body length 523 µm; distribution: Japan, South Korea. . . Belba ( Belba ) unicornis E nami , 1994 – Cornicle k absent; tubercles Ba extreme- ly laterally situated. . . . . . . . . . . . . . . . . 4 4(3) Notogastral setae smooth, setae c1, c2 shorter and thinner than la, lm; genu I with axial seta about 3 times length of other setae; solenidion φ 1 of tibia I shorter than tarsus I; body length 670- 830 µm; distribution: Europe. . . . . . .. Belba ( B .) corynopus ( H ermann , 1804) – Setae c1, c2 approximately similar in length to la, lm, lp. . . . . . . . . 5 5(4) Solenidion φ 1 of tibia I much shorter than tarsus I; axial seta similar in length to oth- er setae on genu I; rostral setae ro and la marginally inserted; body length 690 µm; distribution: Europe. . . . . Belba ( B .) pseudocorynopus M ärkel & M eyer , 1960 – Solenidion φ 1 of tibia I of same length or slightly longer than tarsus I. . . . . . 6 6(5) Notogastral setae c1 shorter and thinner than c2; seta d similar in length and width to other setae on genu I; body length 660 µm; distribution: Algeria, Spain. . . . . . Belba ( B .) patelloides ( M ichael , 1890) – Setae c1 and c2 similar in size to setae la, lm, lp; solenidion of tibia I as long as tarsus I; genu I with axial seta about 2,5 to 3 times length of other setae; body length 680 µm; distribution: China, Rus- sia. . . . . . . . . Belba ( B .) para- corynopus B ulanova - Z achvatkina , 1962 7(2) Sensillus short, clavate with a thick globose, smooth, black head; body length 616-674 µm; distribution: Mexi- co . . . . . . . Belba ( B .) clavasen- silla N orton & P alacios - V argas , 1982 – Sensillus of other appearance. . . . . . . . 8 8(7) Propodolateral apophysis present. . . 9 – Propodolateral apophysis absent . . . 11 9(8) Femur II without a thick spinelike seta; notogastral setae of c-, l-, and h-series smooth, vaned willow-leaf-like with middle vein; postbothridial tubercles Ba, Bp absent (mainland China) or both pre- sent (Taiwan); sensillus and interlamellar setae smooth, distally flagellate; body length 355 µm. . . . . . . . . . . Belba ( B .) cornuta W ang & N orton , 1995 – Femur II with a thick spinelike seta; no- togastral setae not vaned; tubercle Ba present, Bp absent . . . . . . . . 10 10(9) Notogastral setae of c-, l-, and h-series smooth, thin, hairlike, of equal size; body length 434 µm; distribution Uzbekistan . . . . Belba ( B .) sarvari T olstikov , 1996 – Notogastral setae with short stalk and flame-like thickening with short barbs; setae c1, c2, h1 twice the length of la, lm, lp; body length 463 µm; distribution Tadjikistan, Uzbekistan. . . . . Belba ( B .) flammeisetosa T olstikov , 1996 11(8) Seta c1 2x to 3x length of setae c2 to h1; body length 478-547 µm; distribution: Mongolia. . . . . . . . . . . Belba ( B .) heterosetosa B ayartogtokh , 2004 – Seta c1 shorter relative to c2 . . . . 12 12(11) Interlamellar setae very long: 150- 300 µm . . . . . . . . . . . . . 13 – Interlamellar setae < 90 µm, clearly shor- ter than sensillus. . . . . . . . . 17 13(12) Parastigmatic tubercle Sa short, trian- gular in dorsal view with a lateral exten- sion not exceeding that of tubercle Sp; interlamellar setae smooth, extremely long (300 µm); tubercle Ba present, Bp absent; notogastral setae smooth, long (100 µm); body length 680-760 µm; dis- tribution: Poland, Ukraine, Russia. . . . . . . . . . . . . . . . . . Belba ( B .) dubinini B ulanova - Z achvatkina , 1962 – Tubercle Sa long, laterally directed, with a sharply pointed apex . . . . . . . 14 14(13) Postbothridial apophyses Ba, Bp pre- sent . . . . . . . . . . . . . . 15 – Postbothridial apophyses Ba present, Bp absent. . . . . . . . . . . . . 16 15(14) Pseudanal seta ps1 smooth, flagellate,