Bathytoshia Whitley, 1933

Last, Peter R., Naylor, Gavin J. P. & Manjaji-Matsumoto, B. Mabel, 2016, A revised classification of the family Dasyatidae (Chondrichthyes: Myliobatiformes) based on new morphological and molecular insights, Zootaxa 4139 (3), pp. 345-368 : 354

publication ID

https://doi.org/ 10.11646/zootaxa.4139.3.2

publication LSID

lsid:zoobank.org:pub:DCF4220B-4A73-407C-837C-54DEAE29F435

DOI

https://doi.org/10.5281/zenodo.6085203

persistent identifier

https://treatment.plazi.org/id/03A7CA1D-8563-1459-E7C6-FD13FBF402DC

treatment provided by

Plazi

scientific name

Bathytoshia Whitley, 1933
status

 

Genus Bathytoshia Whitley, 1933 View in CoL View at ENA

Bathytoshia Whitley, 1933:61 View in CoL . Type species Dasyatis thetidis Ogilby, 1899 View in CoL ; by original designation.

Definition. Gigantic dasyatids (adults to 210–260 cm DW) characterised by the following: robust, rhombic disc with pectoral-fin apex narrowly angular; snout obtuse and moderately elongate (1.5–2.5 times combined orbit and spiracle length); eye small and protruding slightly; nasal curtain broadly skirt shaped; mouth rather broad, with 3–7 oral papillae; tail firm and short to moderately elongate (length <1–2 times DW), its base broad to very broad and depressed; pelvic fins medium-sized, protruding slightly to greatly beyond disc; dorsal fold absent or forming a low ridge; ventral fold low with a short or long base; caudal sting not posterior on tail (distance from pectoral-fin insertion to caudal-sting base 2.2–3 times interspiracular width); skin smooth or rough and denticle band absent; median thorns absent or in a row extending along disc and onto tail, scapular thorns small or absent; tail spiny with bucklers and tubercles on dorsal midline of adults; dorsal colour largely plain; ventral surface white, disc margin sometimes dark; tail plain, usually black distally; marine, Atlantic and Indo– West Pacific.

Species. B. brevicaudata (Hutton, 1875) , B. centroura (Mitchill, 1815) , and B. lata (Garman, 1880) .

Remarks. Former junior synonym of Dasyatis ( Kottelat, 2013) includes a small group of very large and widely distributed stingrays. Molecular data (G. Naylor, unpubl.) provides evidence that species complexes (A) Bathytoshia (as Dasyatis ) brevicaudata and D. matsubarai Miyosi, 1939 , and (B) Bathytoshia (as Dasyatis ) lata , D. thetidis Ogilby, 1899 , D. ushiei ( Jordan & Hubbs, 1925), and eastern Atlantic stingrays identified as D. centroura (e.g. McEachran & Capapé, 1984), are populations of just two species (i.e. D. brevicaudata and D. lata ). A western Atlantic species, Bathytoshia centroura (Mitchill, 1815) , is not conspecific with Bathytoshia of the eastern Atlantic. The pelagic stingray Pteroplatytrygon violacea (Bonaparte, 1832) , which clusters with these species ( Fig. 1), is morphologically distinct from all other members of the family.

Kingdom

Animalia

Phylum

Chordata

Class

Elasmobranchii

Order

Myliobatiformes

Family

Dasyatidae

Loc

Bathytoshia Whitley, 1933

Last, Peter R., Naylor, Gavin J. P. & Manjaji-Matsumoto, B. Mabel 2016
2016
Loc

Bathytoshia

Whitley 1933: 61
1933
Loc

Dasyatis thetidis

Ogilby 1899
1899
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