Pseudoscopelus obtusifrons

• Main Author: Melo, Marcelo R. S.
• Format: Other/Unknown Material
• Language: unknown
• Published: 2010
• Subjects: Biodiversity; Taxonomy; Animalia; Chordata; Actinopterygii; Perciformes; Chiasmodontidae; Pseudoscopelus; Pseudoscopelus obtusifrons; Pacific; North Atlantic
• Online Access: https://zenodo.org/record/5459817; https://doi.org/10.5281/zenodo.5459817

Pseudoscopelus obtusifrons (Fowler 1934) Figures 5 B, 7 B, 8 B, 10 B, 11 A–E, 28 D; Table 4. Myersiscus obtusifrons Fowler 1934: 362, figures 112–3 [type locality: western Central Pacific, Sulawesi, Indonesia, 3º32’ S, 120º31’ E]. Pseudoscopelus obtusifrons de Beaufort in de Beaufort and Chapman 1951: 6–7 [western Central Pacific]; Lavenberg 1974: 161–169, figures 14, 37–38, 40 [Indo-Pacific and Gulf of Mexico]; Moore et al. 2003: 227 [western North Atlantic]; Prokofiev and Kukuev 2006a: 225–228, figure 4 [western North Pacific, off Japan]; 2006c [key to species]; 2008: 89–102, figures 6, 7, 17, 43, 53, 59, 79–81, 84, 136–153 [redescription]. Pseudoscopelus obtusirostris Krefft 1971: 165 [misspelled]. Pseudoscopelus pauciporus Lavenberg 1974: 171–182, figures 39–40 [Indo-Pacific, Gulf of Mexico; name not available in accordance to the ICZN 1999]. Diagnosis. A species of the Pseudoscopelus scriptus species group, which can be distinguished from its congeners by two unique characteristics: spf present (vs. spf absent); and anterior teeth of lateral series in dentary and premaxillary hook-like curved, inserting on the lateral edge of bone and positioned outside of mouth so that teeth are visible in ventral and dorsal views (vs. lateral series of dentary and premaxillary teeth straight, or if curved, not hook-like, and inserted at oral edge of bone, not allowing them to be seen in dorsal or ventral views). Description. Middle-sized species, largest specimen examined 144.0 mm SL. Morphometric data summarized in Table 4. General body shape as described for genus with diagnostic characteristics of species and species group. First dorsal-fin rays ii (1), vii (2*), viii (9), ix (4); second dorsal-fin rays ii+17 (1), ii+18 (1), ii+19 (1), ii+20 (2), ii+21 (6), ii+22 (2), iii+19 (2*), xx (1); anal-fin rays ii+17 (1), ii+18 (2), ii+20 (1), iii+17 (2), iii+18 (1*), iii+19 (2), iii+20 (6), iv+18 (1); pectoral-fin rays 12 (6), 13(8*), 15 (2); pelvic-fin rays I+4 (1), I+5 (15*); caudal-fin rays i+7+8+i (15), i+7+7+i (1*). ...