Lebertia ( Lebertia )

3.1 Lebertia ( Lebertia) fimbriata Thor, 1899 New record to China ( Figs 1–7 View Figures 1–2 View Figures 3–7 )

Diagnosis. Integument smooth or finely striated, with fine porosity in underlying strata. III-L-5 and IV-L-4–5 with 1–2 elongated distal setae. IV-L-5 with 4-5 robust ventral setae ( Fig. 7 View Figures 3–7 ). Numbers of swimming setae: III-L-5, 1-2; IV-L-4, 1-2; IV-L-5, 2.

Description. Male. Idiosoma ( Figs 1–2 View Figures 1–2 ). Color yellowish-brown. Idiosoma elliptical in outline. Integument smooth, 632 long and 496 wide. Coxal plates single group, 553 in length and 467 in width, Cx-I ML 146, Cx-II ML 124, Cx-I/Cx-II ML ratio 1.17, posterior margin of Cx-II narrow, posterior width 29. Ib-Gf 276, Ib-Ap 521. Suture lines between Cx-III and Cx-IV not reaching to inner extremity but to 2/3 of plate. Cx-IV widest, with gently rounded sides. Gf length 168, width 126. Acetabula 3 pairs, first pair 50 in length, second 41 in length, third 33 in length ( Fig. 4 View Figures 3–7 ). Ib U-shaped, depth 138, width 62. Excretory pore smooth. Gnathosoma ventral margin with a indentation beneath mouth opening. Gnathosoma L 112, chelicera L 201.

Palp ( Fig. 3 View Figures 3–7 ). Ventral seta of P-2 inserted terminally and almost as long as ventral length of segment. P-3 dorsal setae close to each other (distance about 3), inserted proximal to centre of segment, distal setae cannot surpass to terminal margin of P-4, medio- and dorsodistal setae close to each other (distance of insertions about 6). P-4 with 5 dorsal setae, 2 ventral setae, 1 peg-like seta stout at terminal, maximum height in centre of segment and ventral margin straight, ventral margin of P-4 can be divided into 1:1:1 by ventral seta insertions. L/H of palp segments: P-1, 29/35 (ratio 0.82); P-2, 70/58 (ratio 1.21); P-3, 85/37 (ratio 2.30); P-4, 106/34 (ratio 3.1); P-5, 27/14 (ratio 1.93). Total length of palp, 313.

Legs ( Figs 6–7 View Figures 3–7 ). I-L-1 bearing 4 dorsal and 1 ventrodistal setae. I-L-2 with 2 ventral setae, 5 dorsal setae. I-L-3 with 4 dorsal setae. I-L-4 with 3 dorsal setae. I-L-5 with 2 ventral setae, 1 dorsal seta. I-L-6 with 7 small setae. IV-L-3 with 11 setae, of which 4 dorsal setae and 2 ventral setae. IV-L-4 with 11 setae, of which 2 short ventral setae, 3 ventral setae. IV-L-5 with 12 setae, of which 2 ventral setae, 3 dorsal setae and 2 swimming setae at distal edge of segment, which long but not reaching to end of IV-L-6. IV-L-6 with 3 ventral setae and 6 dorsal setae. Claws of legs strong. L/H of legs: I-L-1, 72/53 (ratio 1.36); I-L-2, 73/54 (ratio 1.35); I-L-3, 83/49 (ratio 1.69); I-L-4, 141/46 (ratio 3.07); I-L-5, 157/41 (ratio 3.83); I-L-6, 136/41 (ratio 3.32); IV-L-2, 94/62 (ratio 1.52); IV-L-3, 149/53 (ratio 2.81); IV-L-4, 190/45 (ratio 4.22); IV-L-5, 201/43 (ratio 4.67); IV-L-6, 195/42 (ratio 4.64). Numbers of peg-like setae on IV-L-3-6: IV-L-3, 5; IV-L-4, 7; IV-L-5, 6. Numbers of swimming setae: III-L-5, 2; IV-L-5, 2.

Female. Not examined.

Material examined. Male , Maolan National Nature Reserve, Libo County, Guizhou, China (25°82.23′N, 107°37.21′E; elev. 800 m), coll. Jianjun Guo, 27 October 1998, slide number GZ-IV-1998102701 .

Habitat. Middle- and high-order streams.

Distribution. West Palaearctic and Oriental Regions ( China ( Guizhou)).

Remarks. Lebertia fimbriata was originally reported from Norway (Thor, 1899) and it is the first time recorded in China. It can be distinguished from the others by following: striated or smooth integument; dorsal setae of P-3 close to each other; III-L-5 and IV-L-4/5 with 1-2 elongated distal setae; IV-L-5 with 2 or 3 swimming setae; IV-L-6 without large seta and only 2 fine setae. However, the Chinese specimen has a slight difference between the type specimens ( Gerecke, 2009): IV-L-4 of the type series with 1–2 swimming setae but the IV-L-4 of the examined specimens without swimming seta ( Fig. 7 View Figures 3–7 ), but those specimens cannot be regarded as different species.