Asterorhombus Tanaka, 1915
publication ID |
https://doi.org/ 10.11646/zootaxa.4702.1.18 |
publication LSID |
lsid:zoobank.org:pub:9108DB7D-3722-4F5C-BD76-F387E813BECB |
DOI |
https://doi.org/10.5281/zenodo.5584318 |
persistent identifier |
https://treatment.plazi.org/id/194987B1-5D76-FD6E-DA8B-945182C7F953 |
treatment provided by |
Plazi |
scientific name |
Asterorhombus Tanaka, 1915 |
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Asterorhombus Tanaka, 1915 View in CoL View at ENA
Asterorhombus Tanaka, 1915:567 View in CoL . Type species: Asterorhombus stellifer Tanaka, 1905 View in CoL .
Diagnostic features. Body ovate. Tip of isthmus below posterior margin of lower eye. No orbital and rostral spines. Front margin of head same in both sexes. Interorbital space narrowly concave, width same in both sexes or slightly wider in males than in females and juveniles.
Mouth rather large in size, upper-jaw length on ocular side 9.6–12.9% SL. Maxilla extending to anterior margin of lower eye. Teeth on both jaws uniserial. Gill rakers short and palmate. Scales ctenoid on ocular side, cycloid on blind side; 46–67 scales in lateral line. Lateral line on ocular side curved above pectoral fin; lateral line absent on blind side.
Dorsal-fin origin on blind side in front of upper margin of lower eye, first ray elongate, separated from remaining rays. Anal-fin origin below anterior base of pectoral fin on ocular-side. Pectoral fin not elongate, without sexual dimorphism. Pelvic fin on ocular side originating at tip of isthmus, fourth or fifth ray opposite to first ray on blind side. Caudal skeleton with four plates including parhypural and three hypurals, all plates with deep clefts.
Remarks. Asterorhombus is closely related to Engyprosopon in having a concave interorbital space and all four plates of the caudal skeleton with deep clefts, but it differs from the latter in having palmate gill rakers and an elongate first dorsal-fin ray.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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Asterorhombus Tanaka, 1915
Amaoka, Kunio & Ho, Hsuan-Ching 2019 |
Asterorhombus
Tanaka 1915: 567 |
Asterorhombus stellifer
Tanaka 1905 |