摘要
描记采于云南省玉溪地区的金线属二新种，以形态特征和采集地县名分别命名为长鳍金线SinocyclocheiluslongifinusLi，sp．nov和华宁金线SincyclocheilushuaningensisLi，sp．nov。前者头的后部不隆起，体表裸露，胸鳍长，后伸达腹鳍起点等特征区别云南省的其他金线；后者外形与大头金线相近，但侧线鳞较少（59～60），前躯裸露或被稀疏细鳞，口须较长等可区别，两者遗传距离为1．7％，也已达到种级差异。模式标本保存于云南省路南县黑龙潭水库和云南大学生物系。
Sinocyclocheilus longifinus Li, sp. nov. (fig. 1)Holotype No. 9707004, total length 196 mm, standard length 154 mm, collected in July 19, 1997, from Dalongtan at Huaning county (103°06′E, 24°12′N), Yunnan. Paratype No 9102001, total length 172 mm, standard length 135 mm, same data as holotype in February, 1991. Description: D iii-7 ; P i-16; V i -8 ; A ii-5; Branched caudal fin rays 17. Lateral line holes 70-72. Gill rakers 2+4 ; lower pharyngeal teeth 3 rows, 2. 3. 4-4. 3. 2; Vertebrae 4+39 (1 specimens). Depth in standard length 4. 50~4.81 (4. 66), head 2. 65-2. 96(2. 81 ), length of caudal peduncle 5. 50-6. 75(6. 13), its depth 12. 83-13. 50(13. 17). snout in head 2. 64-3. 19 (2. 97), eye 6. 38-6. 50(6. 44), interorbital 3. 71-4. 25(3. 98). Depth of caudal peduncle 2. 0~2. 33(2. 17)in its length. Diagnosis: The new species differs from S. macrocephalus Li in: (1 )body without scales; (2)absent frontal process ; (3)pectoral fin reaching original of ventral fin. Sinocyclocheilus huaningensis Li sp. nov(fig. 2). Holotype No 9605002, total length 142 mm, standard length 182 mm, collected in May 14, 1996, from Dalongtan at Huaning county, Yunnan. Paratype 14 specimens No. 9207001 - 04, 9605001, 9605003- 05, 9707001 - 03, 9707005 - 07, total length 76~ 193 mm, standard length 60~150 mm, same data as holotype in July, 1992, May, 1996 and July, 1997. Description: D iii- 7; P i- 16 ; V i-8 ; A ii- 5; Branched caudal fin rays 16. Lateral line scales 59 19-20/10-11-v 67. Gill-rakers 2 + 4 - 5, Pharyngeal teeth 3 rows 2. 3. 4 - 4. 3. 2, Vertebrae 4+34-35 (2 specimens). Depth in standard length 3. 23-4. 18(3. 73), head 2. 66-3. 01 (2. 90), length of caudal peduncle 4. 62-6. 17(5. 54), its depth 7. 89~10. 14(9. 23), snout in head 2. 73~ 3. 33 (2. 94), eye 4. 43~ 7. 14 (6. 15), interorbital 3. 00 ~ 4. 17 (3. 48). Depth of caudal peduncle 1. 43~1. 86(1. 68) in its length. Diagnosis: The new species is similar to S. macrocephalus Li in having a longhead and prominent frontal process, but differs from the latter in: (1 )lateral line scales 59 67; Vs74 78; (2)naked or a few scales in front body, Vs on whole body; (3)barbel long, Vs short ;All type specimens kept in Resevoir of Heilongtan Lunan, Yunnan and Department of Biology, Yunnan University.
出处
《湛江海洋大学学报》
1998年第4期1-5,共5页
Journal of Zhanjiang Ocean University
关键词
新种
金线Ba属
鲤科
云南
New species Sinocyclocheilus Cyprinidae Yunnan
