Yunnanilus mentibarbatus, a new species of loach from Yunnan, China (Cypriniformes, Nemacheilidae) Author Chen, Zhuo-Ni https://orcid.org/0009-0003-7209-4421 Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guilin, Guangxi 541004, China Author Du, Li-Na 0000-0002-2246-643X Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guilin, Guangxi 541004, China Author Liang, Yan Guangxi Key Laboratory of Rare and Endangered Animal Ecology, College of Life Sciences, Guangxi Normal University, Guilin, Guangxi 541004, China text Zoosystematics and Evolution 2025 2025-09-26 101 4 1911 1919 journal article 312443 10.3897/zse.101.162354 ece99fc1-c0e7-4b8d-b8c9-9f68378ab188 3916E640-FCEB-4481-BC8B-A242428364B6

Table 2. Yunnanilus species and comparison of identifying characteristics between the new species and its congeners.

Species	Scale	Dorsal-fin branched rays	Pectoral-fin branched rays	Pelvic-fin branched rays	Anal-fin branched rays	Caudal-fin branched rays	Processus dentiformis	Eye diameter vs. interorbital width	Inner gill rakers	Lateral line pores
Y. mentibarbatus sp. nov.	Whole body	8–9	10	7	6–7	16	Present	Less than	11	16–21
Y. analis	Absent	9	12	7	6	15	Present	Greater than	8	12–15
Y. beipanjiangensis	Absent	8–9	11	7	5	16	Present	Greater than	10	6–12
Y. chuanheensis	Whole body	8–9	11–12	7–8	5–6	16	Absent	Less than	10–11	Unknown
Y. chui	Absent	9	11	8	6	16	Present	Greater than	12	4
Y. discoloris	Absent	8–9	11–12	7	5	16	Absent	Equal to	8–10	4–10
Y. elakatis	Caudal peduncle	9–10	10–11	7–8	5–6	16	Present	Less than	10–12	Unknown
Y. forkicaudal	Absent	7	9–11	8	5	16	Unknown	Less than	12	Unknown
Y. longibulla	Whole body	8	11	7–8	5	15–17	Present	Greater than	10–12	11–17
Y. jiuchiensis	Whole body	8	11	7	6	16	Absent	Greater than	8	6–11
Y. macrogaster	Whole body	8	12–13	7	5	16	Present	Less than	13	12–13
Y. macrolepis	Whole body	8–9	10–11	6	6	15–16	Present	Less than	14–15	9–17
Y. macrositanus	Caudal peduncle	7	11	8	5	16–17	Unknown	Less than	8	Unknown
Y. nanpanjiangensis	Caudal peduncle	8–9	10	6–7	6	16	Present	Less than	10	6–10
Y. paludosus	Absent	8	9–11	6–7	5–6	14–16	Present	Less than	12	19–21
Y. parvus	Whole body	8	10–11	7	5	16	Present	Less than	8–9	7–16
Y. pleurotaenia	Whole body	8	10	6	5	15–16	Present	Less than	10–13	16–25
Y. polylepis	Whole body	9	10–11	6	5	15–16	Absent	Less than	10	Unknown
Y. sichuanensis	Posterior body	8	12	7	5	16	Absent	Less than	9–10	16–17
Y. spanisbripes	Whole body	9	11	7	6	16	Present	Less than	11–12	15–24
Y. triangulus	Whole body	8	10–11	6	5	15–17	Absent	Less than	9–11	Unknown
Y. yangi	Absent	8	11	6–7	5	16	Absent	Less than	Unknown	Unknown