Two new species of the scorpionfish genus Trachyscorpia (Sebastidae: Sebastolobinae) from the southern Indo–West Pacific, with comments on the distribution of T. eschmeyeri

Autor:	HIROYUKI MOTOMURA, PETER R. LAST, GORDON K. YEARSLEY
Rok vydání:	2007
Předmět:	Spine (zoology) Indian ocean Scale (anatomy) Genus Key (lock) Animal Science and Zoology Anatomy Subgenus Biology Trachyscorpia biology.organism_classification Ecology Evolution Behavior and Systematics
Zdroj:	Zootaxa. 1466:19-34
ISSN:	1175-5334 1175-5326
Popis:	Two new species of the scorpionfish genus Trachyscorpia are described on the basis of 20 and 7 specimens collected from Australasia at depths of 731–1020 m and the southwestern Indian Ocean at depths of 620–1080 m respectively. The two new species, classified into the subgenus Mesoscorpia, are distinguished from the only other member of the subgenus, T. (M.) eschmeyeri, by the following characters: the tympanic spines absent (vs. usually present in the latter), the upper-jaw lip well developed, covering the premaxillary tooth band laterally (vs. lip poorly developed, the premaxillary teeth exposed laterally), scales absent on the lateral surface of the maxilla (vs. scales present), and 4 blackish saddles on the body in preserved specimens (vs. no blackish saddles). Trachyscorpia (M.) carnomagula sp. nov. differs from T. (M.) longipedicula sp. nov. in having 57–63 scale rows in longitudinal series (vs. 50–53 in the latter). They are also distinguished by several morphometric characters, including lengths of pelvic-fin spine and soft ray, and first anal-fin spine. The subgenus Mesoscorpia is redefined. A key to the species of Trachyscorpia and comments on distribution of T. (M.) eschmeyeri are also provided.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0b9a45c575f97d7c8e92dcc427675825 https://doi.org/10.11646/zootaxa.1466.1.3 Zobrazit plný text záznamu