Owstonia melanoptera

description

Description. A species of Owstonia with LL pattern type 1, consisting of a simple lateral line that originates from posttemporal sensory canal near anterodorsal margin of gill opening, curves upward and backward then continues posteriorly just below dorsal-fin base to 8 or 7 th soft ray. Dorsal fin III, 21; anal fin I, 14; pectoral fin 22; gill rakers 13 / 14 + 25. Vertebrae: precaudal 11, caudal 17, total 28; anal-fin pterygiophores anterior to 1 st haemal spine 2. Oblique body scale rows in mid-lateral series about 48 – 53 (many scales missing on left side); nape scaly and cheek scale rows 7. Lower limb margin of preopercle without spines. Papillae in slight depression behind tip of premaxillary ascending processes 5, arranged in 2 rows with outer papillae in each row approximately same size and equally spaced, and the additional middle papilla in posterior row smaller than adjacent papillae. Teeth in outer row of each premaxilla 18 / 19; 0 / 1 inner teeth anteriorly. Dentary lateral row teeth 14 / 15; symphyseal teeth 3 ‒ 4, spike-like, and with 1 inner tooth anteriorly. Pelvic fin short, depressed fin extending only to anus. Caudal fin lanceolate. Caudal fin 2.5 times in SL; he

Hidden diversity in deep-water bandfishes: review of Owstonia with descriptions of twenty-one new species (Teleostei: Cepolidae: Owstoniinae)

diagnosis

Diagnosis. A species of Owstonia with LL pattern type 1; dorsal fin III, 21; anal fin I, 14; LL ends below dorsal-fin soft rays 7 ‒ 8; oblique body scale rows in mid-lateral series about 48 – 53; total gill rakers 38 ‒ 39; dark premaxillary stripe; dorsal fin anteriorly with a black blotch.

Hidden diversity in deep-water bandfishes: review of Owstonia with descriptions of twenty-one new species (Teleostei: Cepolidae: Owstoniinae)

distribution

Distribution. (Fig. 24) Known only from Albay Gulf, Philippines where trawled in 363 – 385 m.

Hidden diversity in deep-water bandfishes: review of Owstonia with descriptions of twenty-one new species (Teleostei: Cepolidae: Owstoniinae)

etymology

Etymology. From the Greek melanos (black) and pteron (wing or fin), in reference to the large black blotch on the dorsal fin of the adult holotype. The name is treated as a noun in apposition.

Hidden diversity in deep-water bandfishes: review of Owstonia with descriptions of twenty-one new species (Teleostei: Cepolidae: Owstoniinae)