A New Species of Homalopteroides (Teleostei: Balitoridae) from Sarawak, Malaysian Borneo

作者：Randall Zachary S^*; Page Lawrence M

来源：Copeia, 2014, 2014(1): 160-167.

DOI：10.1643/CI-13-055

Homalopteroides avii, new species, is described from the Rajang River basin, Sarawak, Malaysian Borneo. It is distinguished from all other species of Homalopteroides by a wider gape of 28.5-33.3% HL vs. 22.3-24.2% for H. wassinkii, 20.0-28.4% for H. modestus, 19.1% for H. rupicola, 19.1-27.3% for H. smithi, 20.0-23.2% for H. stephensoni, 20.226.9% for H. weberi, 18.4-26.0% for H. tweediei, 17.3% for H. indochinensis, 17.4-21.2% for H. nebulosus, and 18.0-19.0% for H. yuwonoi It is further distinguished from species of Homalopteroides by the presence of a lateral cephalic stripe vs. absence in H. modestus, H. rupicala, H. smithi, H. tweediei, H. nebulosus, and H. yuwonoi; deeper caudal peduncle, 10.1-10.9% SL, vs. 8.4-9.0% for H. wassinkii, 8.7% for H. rupicola, 7.7-9.1% for H. smithi, 6.1-6.6% for H. stephensoni, 6.7-8.0% for H. weberi, 8.0-9.4% for H. tweediei, 9.3-9.8% for H. nebulosus, 8.7% for H. indochinensis, and 7.3% for H. yuwonoi; circumpeduncular scale count of 20-22 vs. 16 for H. rupicola, H. stephensoni, H. nebulosus, H. indochinensis, and H. yuwonoi, 14-16 for H. tweedei, and 16-18 for H. smithi and H. weberi; total pelvic-fin ray count of 9 vs. 10 for H. stephensoni, H. weberi, and H. yuwono. The species is relatively large for the genus, reaching 52.9 mm SL.

• 出版日期2014-3