Carolinea 77

146 Carolinea 77 (2019) Descriptions and measurements are based on specimens mounted on temporary cavity slides or on permanent slides. Unless specifically men- tioned, the descriptions refer to the adult stage. Nine adults of Belba sculpta were deposited as voucher specimens in the collection of the De- partment of Zoology of the State Museum of Na- tural History Karlsruhe in Germany. The conventions of measurement used follow B ehan - P elletier & N orton (1983, 1985) and B a ­ yartogtokh (2000). Dimensions of body struc- tures are given in micrometers, with the mean value followed by the range in parentheses where based on a sample of 10 or more indivi- duals. Setal length measurements are based on at least 3 specimens. Ventral body length is mea- sured in lateral view from the tip of the rostrum to the posterior edge of the ventral plate. Total body length is calculated from the tip of the rostrum to the posterior border of the notogaster. Maxi- mum notogastral width is determined in dorsal view. Prodorsal width is measured from the left margin to the right margin of the proterosoma at the level of the acetabulae in dorsal perspective. Length of the notogaster is measured in lateral perspective from its anterior to its posterior mar- gin along a line parallel to the circumgastric scis- sure. Maximum height of the notogaster is deter- mined in lateral view from its ventral to its dorsal border at an angle perpendicular to the plane of the circumgastric scissure and does not include the height of the latter, so as to avoid ambiguities resulting from differential notogastral expansion. Body height, the maximum dorsoventral thick- ness of the hysterosoma, is measured in lateral view from the ventral rim of the ventral plate to the dorsal rim of the notogaster in postgenital transect. Leg length is measured on intact slide mounted legs in lateral aspect from the proximal margin of the trochanter to the base of the claw. Length of single leg segments is determined in lateral view from the most proximal sclerotized point to the most distal and includes the portion inserted in the following, more proximal segment. Distance between an adanal seta and the geni- tal plate is measured between the setal insertion point and the closest point on the border of the genital plate. Distances between setae are de- termined between their central insertion points. Leg setation formulae present the number of se- tae present on a specific segment of legs I-IV. Leg associated setal formulae refer to the pre- sence (1) or absence (0) of setae paired with solenidia on a specific segment of legs I-IV. Leg solenidial formulae show the number of solenidia present on the genu, tibia and tarsus of any given leg. Palpal setation formulae give the number of setae present on the palp in the sequence: trochanter-femur-genu-tibia-tarsus. Epimeral setation formulae give the number of setae present unilaterally on epimeres I-IV. The general morphological terminology utilized in this paper bases on B ehan - P elletier & N orton (1983, 1985), and N orton & B ehan - P elletier (2009). The nomenclature of the epimeral enantiophyses lar- gely adheres to G randjean (1960a) and N orton (1978b). If only a single pair of prodorsal tuber- cles is present in the dorsosejugal region, these are termed apophyses Ba, after B ehan - P elletier & N orton (1985). The nomenclature of the leg chaetotaxy derives from N orton (1977b), while that of the gnathosoma follows V an der H ammen (1968) and A lberti et al. (2011). An explanatory list of the abbreviations used in the text and illus- trations is presented by L amos (2016). 3 Results 3.1 Description of Belba sculpta from the Dossenwald 3.1.1 Adult Diagnosis Medium sized Belba with a total body length ranging from 526-598 μm (mean 561 μm). La- mellar and rostral setae smooth; mutual distance between ro-ro > le-le. Sensillus (190-230 µm) and interlamellar setae (220-240 µm) both ex- ceptionally long, smooth and distally flagellate. Postbothridial tubercles Ba, Bp and ventrosejugal tubercles Va, Vp well developed, subtriangular. Apophysis E2p of propodoventral enantiophysis slightly less well defined; E2a represented by a thickened ridge. Prodorsal tubercles Aa, Ap, Da, Dp, La, Lp absent. Parastigmatic apophysis Sa elongate, ceratiform, laterally directed and with a sharply pointed apex; Sp much shorter, sub- triangular. Propodolateral apophyses and spinae adnatae absent. Notogastral setae of c-, l- and h-series smooth and of medium length (55-68 µm), darkly pigment- ed except for the most proximal part. Notogaster without a compact mass of debris; rarely with nymphal scalps. Genital, anal and most epimeral setae barbed. Epimeral setation formula 3-1-3-4. Adanal setae ad1, ad2, ad3 smooth, flagellate; seta ad3 laterally displaced. Pseudanal setae ps1, ps2, ps3 marginally positioned, thin, smooth, flagellate; seta ps1 very long (80-110 µm). For-