Ophiocnida californica Ziesenhenne, 1940

Granja-Fernández, Rebeca, Hendrickx, Michel E., Rangel-Solís, Pedro Diego & López-Pérez, Andrés, 2023, Deep-sea Ophiuroidea (Echinodermata) collected during the TALUD cruises in western Mexico, Zootaxa 5259 (1), pp. 1-71 : 57

publication ID

https://doi.org/ 10.11646/zootaxa.5259.1.1

publication LSID

lsid:zoobank.org:pub:4306F52E-FD24-45B0-B307-66B71173D805

DOI

https://doi.org/10.5281/zenodo.7795133

persistent identifier

https://treatment.plazi.org/id/03AB87FA-FF99-FFED-FF7B-FF1CFBCDFAAF

treatment provided by

Plazi

scientific name

Ophiocnida californica Ziesenhenne, 1940
status

 

Ophiocnida californica Ziesenhenne, 1940 View in CoL

Fig. 17G‒L View FIGURE 17

Ophiocnida californica Ziesenhenne, 1940: 25‒27 View in CoL , pl. 5, figs. 4‒6.— Granja-Fernández et al. 2014: 109.

Material examined. Seven individuals at one station. TALUD XIV, Sta. 32, 3 ind. (ICML-EMU-11174), 3 ind. (ICML-EMU-11175), and 1 ind. (ICML-EMU-11678).

Comparative material. Holotype: LACM 615.1 About LACM . Paratypes, 32 ind.: ICML-UNAM 3.76 .0, LACM 615.2 About LACM , LACM 615.3 About LACM , LACM 615.4 About LACM , LACM 615.5 About LACM , MCZ OPH-7032 , USNM E8007 About USNM (Supplementary file 2) .

Description (ICML-EMU-11175). DD = 6 mm. Disc circular. Dorsal disc covered by imbricated scales and scattered small spines mostly around the margin of the disc. Primary plates rounded, widely separated from each other. RS almost bar-like, separated by elongated scales for half their length ( Fig. 17G View FIGURE 17 ). Ventral interradii covered by imbricated scales smaller than dorsal disc ( Fig. 17H View FIGURE 17 ). OSh broader than long, spearhead-shaped. Madreporite slightly larger than OSh. AdSh trapezoidal, meeting in front of OSh. Jaws bearing three oral papillae at each side; AdShSp slightly serrated, rectangular, the largest; 2AdShSp pointed; IPa quadrangular-rounded. vT quadrangular ( Fig. 17I View FIGURE 17 ). Arms slender. DAP twice as wide as long, triangular, some fragmented in 2‒3 pieces, contiguous ( Fig. 17J View FIGURE 17 ). VAP slightly broader than long, pentagonal, contiguous. LAP with up to three arm spines, small (approximately one arm segment in length), blunt-tip, middle the longest, dorsalmost the shortest. Tentacle pores with two oval TSc ( Fig. 17K View FIGURE 17 ). Color pattern dorsally and ventrally light brown (ethanol preservation) ( Fig. 17G‒L View FIGURE 17 ).

Habitat and distribution. Gulf of California, Mexico; 5‒302 m depth, coral, algae, sandy, muddy, and rocky substrates ( Ziesenhenne 1940; pers. obs.). The material examined was collected only in one locality in the Gulf of California; 123 m depth.

Remarks. In some specimens of O. californica collected during this survey, the central primary plate is always evident, contrary to the radial primary plates, which are not always conspicuous. In addition, the fragmentation of the dorsal arm plates is not always very evident, the serration of the AdShSp is sometimes conspicuous and sometimes not. Finally, the ventral arm plates are usually triangular. Other Ophiocnida species have scattered spines on the dorsal disc as in O. californica ; however, they differ in having all oral papillae rounded and small (vs. AdShSp slightly serrated and rectangular in O. californica ), non-fragmented dorsal arm plates (vs. fragmented), and tentacle scales arranged perpendicularly (vs. arranged in parallel) (e.g., Gondim et al. 2013; Granja-Fernández et al. 2014). Due to these differences, a revision of the generic placement of O. californica is needed.

MCZ

Museum of Comparative Zoology

USNM

Smithsonian Institution, National Museum of Natural History

Kingdom

Animalia

Phylum

Echinodermata

Class

Ophiuroidea

Order

Amphilepidida

Family

Amphiuridae

Genus

Ophiocnida

Loc

Ophiocnida californica Ziesenhenne, 1940

Granja-Fernández, Rebeca, Hendrickx, Michel E., Rangel-Solís, Pedro Diego & López-Pérez, Andrés 2023
2023
Loc

Ophiocnida californica

Granja-Fernandez, R. & Herrero-Perezrul, M. D. & Lopez-Perez, R. A. & Hernandez, L. & Rodriguez-Zaragoza, F. A. & Jones, R. W. & Pineda-Lopez, R. 2014: 109
Ziesenhenne, F. C. 1940: 27
1940
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