Diphasia digitalis ( Busk, 1852 )

Calder, Dale R., 2013, Some shallow-water hydroids (Cnidaria: Hydrozoa) from the central east coast of Florida, USA, Zootaxa 3648 (1), pp. 1-72: 24-26

publication ID

http://dx.doi.org/10.11646/zootaxa.3648.1.1

publication LSID

lsid:zoobank.org:pub:22089255-436A-4DBB-BD93-1D3C8CF281FE

DOI

http://doi.org/10.5281/zenodo.5263378

persistent identifier

http://treatment.plazi.org/id/039B197E-FFC8-F55D-E6F9-F8C4FB561776

treatment provided by

Felipe

scientific name

Diphasia digitalis ( Busk, 1852 )
status

 

Diphasia digitalis ( Busk, 1852)  

Fig. 8a View FIGURE 8

Sertularia digitalis Busk, 1852: 393   .

Type locality. Australia: Torres Strait , Prince of Wales Channel ( Busk 1852: 393)   .

Voucher material. West Palm Beach, on reef seaward of the Breakers Hotel, 45 feet (13.7 m), together with Halopteris carinata   , January 1991, SCUBA, one colony, 2.5 cm high, without gonophores, coll. P. Humann, ROMIZ B3964.

Remarks. Diphasia digitalis ( Busk, 1852)   was first reported in the western Atlantic by Allman (1877) from Key West, Florida, although he assigned it to a new genus and species ( Desmoscyphus longitheca   ). Soon after, Allman (1888) reported it from Bahia, Brazil, but described it as a new species ( Desmoscyphus acanthocarpus   ). Nutting (1904) concluded that Desmoscyphus longitheca Allman, 1877   and D. acanthocarpus Allman, 1888   were identical after examining types of the two nominal species, and assigned both to the synonymy of Diphasia digitalis   .

Bale (1884: 101) noted that colonies of this species appear “dark gray, almost black.” Others have described them as dark brown (e.g., Morri et al. 2009). The colouration is due to blackish pigment granules in epidermal layers of the coenosarc ( Schuchert 2003). Material examined here, in fair condition, had obvious black pigment granules in the coenosarc.

The known range of Diphasia digitalis   in the western Atlantic is extended slightly to the north, having been reported earlier from the Florida Keys ( Fraser 1944)   .

Reported distribution. Atlantic coast of Florida. First record.

Western Atlantic. West Palm Beach area, Florida (reported herein) to Brazil (Oliveira et al. submitted), and including the Gulf of Mexico ( Calder & Cairns 2009) and the Caribbean Sea ( Vervoort 1968).

Elsewhere. Circumglobal in tropical and subtropical waters ( Millard 1975; Schuchert 2003).

Kingdom

Animalia

Phylum

Cnidaria

Class

Hydrozoa

Order

Leptothecata

Family

Sertulariidae

Genus

Diphasia

Loc

Diphasia digitalis ( Busk, 1852 )

Calder, Dale R. 2013
2013
Loc

Sertularia digitalis

Busk, G. 1852: 393
1852