Pseudoscopelus astronesthidens Prokofiev & Kukuev, 2006

Melo, Marcelo R. S., 2019, A revision of the genus Pseudoscopelus Lütken (Chiasmodontidae: Acanthomorphata) with descriptions of three new species 2710, Zootaxa 2710 (1), pp. 1-78 : 55

publication ID

https://doi.org/ 10.11646/zootaxa.2710.1.1

persistent identifier

https://treatment.plazi.org/id/852E9C20-FFC4-FFD8-FF3C-FD6D4E44620E

treatment provided by

Felipe

scientific name

Pseudoscopelus astronesthidens Prokofiev & Kukuev
status

 

Pseudoscopelus astronesthidens Prokofiev & Kukuev View in CoL species group

Composition. The Pseudoscopelus astronesthidens species group is composed of three species: P. astronesthidens , P. australis , and P. odontoglossum .

Diagnosis. The Pseudoscopelus astronesthidens species group is diagnosed from its congeners by the unique photophore and dentition patterns: luminescent tissue present as discrete photophores (vs. completely absent in P. aphos and as vestigial white lines in P. parini ); mxf short, restricted to area below orbit, not connected to apf posteriorly (vs. mxf absent or if present connected to apf posteriorly); elongate canine teeth present on basihyal and second basibranchial (vs. teeth absent on basihyal; small conical teeth present on second basibranchial); palatine teeth type 4, with considerable ability to bend caudally (vs. palatine teeth of type 1, firmly attached to bone).

Ontogenetic changes. Pseudoscopelus australis has a negative, statistically significant allometric growth of the pectoral fin (P<0.05, Fig. 8 C View FIGURE 8 ); because of limited samples available, it could not be determined if this is also true in P. astronesthidens and P. odontoglossum ( Fig. 21 View FIGURE 21 ). Dentition pattern of specimens was formed in specimens as small as 31.9 mm (CAS-SU 66492).

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