Sinibotia lani, a new species of botiid loach (Teleostei: Botiidae) from Guangxi, China Wu, Tie-Jun Yang, Jian Zootaxa 2019 2019-10-01 4679 1 97 106 Wu & Yang, 2019 Wu & Yang 2019 [151,315,405,432] Actinopterygii Cobitidae Sinibotia Animalia Cypriniformes 1 98 Chordata species lani sp. nov.  ( Figs. 1–2)     Holotype.NNU 201707001, 53.1 mmstandard length (SL), a market in Longzhou County, Guangxi, China, reportedly collected in Zuojiang Riverclose to Longzhou; 22°20.75'N, 106°51.5'E; collected by J. H. Lan,  July 2017.   Paratypes.NNU 201707002–07008, 7 specimens, 49.7–63.63 mmSL; collected with holotype.   Diagnosis.  Sinibotia laniis distinguished from all other species of  Sinibotiaby a combination of the following characters: body depth 17.5–21.1% SL; snout length shorter than postorbital length of head; eye diameter 10.2–13.2% HL; interorbital width 16.0–18.6 % HL; bifid suborbital spine reaching or extending beyond postorbital margin of eye; lower lip with pair of fleshy button-like clusters of papillae; dorsal-fin origin opposite to pelvic-fin origin, pelvic fin not reaching anus; six dark vertical bars on the body.   Description.Morphometric and meristic data of  S. laniare given in Table 1. General appearance and mouth in ventral view of  S. laniare shown in Figs. 1–2, respectively. Body elongate and compressed. Dorsal profile slightly more convex than ventral profile. Body depth at dorsal-fin origin 17.5–21.1% SL.   FIGURE 1.Dorsal, lateral and ventral views of  Sinibotia lani  sp. nov., NNU 201707001, holotype, 53.1 mm SL, market in Longzhou County, Guangxi, China.   TABLE 1.Morphometric data of  Sinibotia lani,  S. zebra,  S. robustaand  S. pulchra(mean ± SD).      S. lani(n=8) (holotype and paratypes)   S. zebra(n=5)   S. robusta(n=5)   S. pulchra(n=5)  Total length 60.9–76.5 (69.8±6.0) 67.0–75.5 (70.1±3.3) 99.8–124.2 (113.8±10.4) 82.6–97.7 (91.4±5.6)  Standard length 49.7–63.3 (57.0±5.0) 56.4–63.8 (59.8±2.7) 80.9–100.1 (91.8±8.2) 67.1–80.4 (74.6±5.1)  Percent of SL  Body depth at dorsal origin 17.5–21.1 (19.3±1.0) 14.7–18.2 (16.8±1.5) 22.2–26.5 (24.9±1.7) 18.3–21.4 (19.5±1.4)  Head length 26.5–29.8 (28.3±1.2) 23.6–26.6 (25.1±1.3) 26.4–28.1 (27.5±0.7) 28.1–29.6 (28.8±0.6)  Head depth 13.1–15.3 (14.3±0.7) 10.5–11.6 (10.8±0.5) 16.9–18.9 (18.1±0.8) 13.3–14.9 (14.1±0.7)  Pre-dorsal length 54.8–57.8 (56.6±1.1) 56.1–59.4 (57.6±1.3) 52.6–55.5 (53.6±1.1) 56.8–60.0 (58.0±1.3)  Pre-pectoral length 26.2–29.2 (28.2±1.0) 22.7–25.9 (24.0±1.3) 26.6–29.1 (27.8±1.0) 27.0–29.5 (28.1±1.2)  Pre-pelvic length 54.8–60.1 (57.3±1.5) 55.9–58.8 (57.5±1.2) 55.3–58.9 (57.1±1.4) 57.0–61.8 (58.4±2.0)  Pre-anal length 76.6–82.5 (79.5±1.8) 70.7–77.4 (74.9±2.7) 78.3–81.0 (80.0±1.1) 77.6–79.9 (78.8±1.0)  Caudal-peduncle length 12.6–15.1 (13.7±0.9) 17.3–18.5 (17.9±0.6) 12.5–15.2 (13.4±1.1) 14.0–15.4 (14.6±0.5)  Caudal-peduncle depth 12.6–14.8 (13.7±0.7) 11.0–13.0 (11.8±0.8) 14.1–16.0 (15.1±0.7) 12.8–13.8 (13.3±0.4)  Percent of HL  Snout length 42.3–47.1 (43.6±1.6) 40.2–51.8 (43.8±4.7) 46.4–48.8 (47.9±1.0) 42.9–48.7 (45.6±2.1)  Eye diameter 10.2–13.2 (11.7±1.3) 9.4–12.8 (11.3±1.3) 14.4–19.1 (16.2±1.8) 10.1–11.1 (10.7±0.5)  Interorbital width 16.0–18.6 (17.4±1.0) 14.2–15.6 (15.1±0.6) 19.4–23.0 (21.4±1.6) 15.2–16.9 (15.9±0.7)  Outer rostral-barbel length 11.4–23.8 (17.4±4.1) 14.3–20.8 (17.5±3.1) 15.5–19.6 (17.5±1.9) 12.7–15.3 (14.3±1.2)  Inner rostral-barbel length 11.1 –16.6 (13.9±2.1) 13.2–20.9 (16.2±3.1) 18.9–25.2 (21.3±2.5) 15.4–19.6 (17.5±1.9)  Maxillary-barbel length 10.5–19.4 (14.9±3.0) 16.4–20.0 (18.2±1.5) 15.4–22.5 (19.6±2.6) 19.3–22.1 (20.9±1.1) Head elongate and compressed, head depth almost 46.3–54.7% head length. No fontanelle on cranium. Snout long, pointed; snout length shorter than postorbital length of head. No scales on cheek. Eyes small, dorsolateral; eye diameter narrower than interorbital width. Suborbital groove present under eye and extends beyond posterior edge of eye. Suborbital spine bifid, minute fork occurs under anterior origin of eye; tip of larger spine almost reaches posterior margin of eye. Nostrils close together and separated by fleshy flap, nearer to eye than to tip of snout. Mouth inferior. Lips wrinkled, continuous at mouth angle; pair of fleshy button-like clusters of papillae on lower lip ( Fig. 2). Three pairs of barbels. Two pairs of rostral barbels closely placed, outer ones longer than inner ones. Rostral barbels not reaching mouth angle. Maxillary barbels not reaching vertical line of anterior margin of eyes, their lengths shorter than rostral barbels. Lateral line complete, along middle of body. Scales small, partially overlapping and embedded.   FIGURE 2.Ventral view of mouth of  Sinibotia lani  sp. nov., NNU 201707001, holotype, 53.1 mm SL, market in Longzhou County, Guangxi, China. Fins short. Dorsal fin with 8 branched rays, origin nearer to caudal-fin base than to tip of snout. Pectoral fin short, with 13–14 branched rays; pectoral-fin length less than half distance between pectoral-fin origin and pelvicfin origin. Pelvic fin with 7 branched rays, origin opposite to dorsal-fin origin; pelvic fin not reaching anus. Anus anterior to anal-fin origin. Anal fin not reaching caudal-fin base. Caudal fin deeply forked, lobes rounded. Caudalpeduncle length almost equal to its depth.  Colouration.In preserved specimens, head and body light brown. Side of head with narrow light brown longitudinal streak originating from upper corner of gill opening, running across upper margin of eye and nostril, ending on snout. Six dark vertical bars on body; interspaces narrower than bars; color of bars under lateral line diminish. Dorsal and anal fins with median dark band. Caudal fin with two dark wavy transverse bands on each lobe, anterior band continuous across entire fin.   Distribution.  Sinibotia laniis presently known only from the typelocation in Longzhou County, Guangxi, China, in the Zuojiang River drainage ( Fig. 3).   Etymology.The new species is named in appreciation of Mr. Lan Jiahu, Du’an Fisheries Technology Extension Department, Guangxi, China, who collected the typespecimens of the new species. Since 1987, his explorations in south Chinahve revealed about 50 new species. 2423311643 2017-07 J. H. Lan China Longzhou County 22.345833 Zuojiang River 85 106.85833 Longzhou 1 98 1 Guangxi holotype 2423311642 [1007,1274,621,647] 2017-07 J. H. Lan China Longzhou County 22.345833 Zuojiang River 85 106.85833 Longzhou 1 98 1 Guangxi paratype