Mataeocephalus (Mataeocephalus) cristatus Sazonov, Shcherbachev and Iwamoto, 2003
publication ID |
https://doi.org/ 10.5281/zenodo.11512126 |
DOI |
https://doi.org/10.5281/zenodo.11512304 |
persistent identifier |
https://treatment.plazi.org/id/039F87BD-FFE3-1167-AB64-E3AFFE2EFAD0 |
treatment provided by |
Felipe |
scientific name |
Mataeocephalus (Mataeocephalus) cristatus Sazonov, Shcherbachev and Iwamoto, 2003 |
status |
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Mataeocephalus (Mataeocephalus) cristatus Sazonov, Shcherbachev and Iwamoto, 2003 View in CoL
Figures 16A–C View FIGURE .
Mataeocephalus cristatus Sazonov, Shcherbachev and Iwamoto, 2003:290–291 View in CoL , figs. 3–4 (holotype, 48 mm HL, 215 mm TL; ZMMU P.15345, Ninety East Ridge, 11°31ʹS, 88°55ʹE, 1600–1700 m; 19 paratypes, 152–271 mm TL; w. tropical Pacific and Indian Ocean, 1000–1720 m).— Shao et al., 2008: table 2 (2 spec., Taiwan [ SCS], 227–1010 m; first record from Taiwan).
MATERIAL EXAMINED (3 spec.).— SCS: ASIZP 66077 View Materials (1, 188 TL) and ASIZP 66912 View Materials (1, 216+ TL) , CD 322, 1098 m. SET: ASIZP 67386 View Materials (1, 52 HL, 262 TL) , CP 366, 1032 m.
DISTINGUISHING FEATURES.— BR 7; P i17–i21; V 7. Snout 35–41% HL, 1.4–2.0 times larger than orbit; orbit 21–25% HL, about equal to interorbital space; orbit to angle of preopercle 33–38% HL. Snout depressed, narrowly pointed in lateral view, broadly triangular in dorsal view, tipped with stout spiny scutes; mouth small, underslung, U-shaped; underside of head fully scaled; spinous second ray of 1D weakly serrated, slightly prolonged, its height usually 60–84% HL; body scales with needle-like spinules in 12–18 parallel rows, middle row slightly enlarged; window of light organ absent; periproct relatively small, about midway between V and A. Attains at least 271 mm TL.
DISTRIBUTION.— Broadly distributed in the w. tropical Pacific and Indian Ocean in 1000–1720 m . Our two specimens were collected from the South China Sea off Taiwan in 1032–1098 m .
REMARKS.— Shao et al. (2008: table 2) first recorded the species from Taiwan based on the current specimens. Mataeocephalus cristatus is quite distinct from M. hyostomus , its congener in Taiwan, which is classified in a separate subgenus. The two species can be distinguished by a combination of characters including BR 7 (vs. 6 in M. hyostomus ), V ray count (7 vs. 7–8, rarely 9, in M. hyostomus ), height of spinous 1D ray (<HL in M. cristatus , greatly elongated, 145–295% HL in M. hyostomus ), snout length (35–41% HL vs. 30–36%), orbit-preopercle (33–38% HL vs. 40–44%), and length upper jaw (20–27% HL vs. 28–31%). Mataeocephalus accipenserinus and M. adustus are distinguished from M. cristatus by their naked underside of snout. (Mostly adapted from Sazonov et al., 2003.)
ZMMU |
Zoological Museum, Moscow Lomonosov State University |
SCS |
Agriculture and Agri-Food Canada |
BR |
Embrapa Agrobiology Diazothrophic Microbial Culture Collection |
V |
Royal British Columbia Museum - Herbarium |
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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Mataeocephalus (Mataeocephalus) cristatus Sazonov, Shcherbachev and Iwamoto, 2003
Iwamoto, Tomio, Nakayama, Naohide, Shao, Kwang-Tsao & Table, Hsuan-Ching Ho 2015 |
Mataeocephalus cristatus
SAZONOV, YU & N. SHCHERBACHEV & T. IWAMOTO 2003: 291 |