Phallusia, Savigny, 1816

Monniot, Françoise, 2018, Ascidians collected during the Madibenthos expedition in Martinique: 1 - Phlebobranchia, Zootaxa 4387 (3), pp. 451-472 : 465-466

publication ID

https://doi.org/ 10.11646/zootaxa.4387.3.3

publication LSID

lsid:zoobank.org:pub:F0845057-D918-4693-8D80-E94E6CA6EE8C

DOI

https://doi.org/10.5281/zenodo.5967765

persistent identifier

https://treatment.plazi.org/id/03D9A066-FFF4-FFB6-F2C1-1B4AFE66FE40

treatment provided by

Plazi

scientific name

Phallusia
status

 

Phallusia sp.

Figs 13 View FIGURE 13 , 14 View FIGURE 14 , 15 View FIGURE 15

Station: AB 159 (MNHN P5 PHA 127)

A specimen 5cm long has an ovoid shape with a very smooth stiff colourless tunic. It was attached by its whole ventral side. The oral siphon is apical. The atrial siphon is slightly protruding at 1/2 of the body length its aperture directed anteriorly. Internal organs are not pigmented ( Fig 13 View FIGURE 13 ). All anatomical characters are the same as those described for P. nigra collected from the nearby stations. The prepharyngeal area is narrow with papillae ( Fig. 15A View FIGURE 15 ). The dorsal tubercle opens in a small C. The neural ganglion and the neural gland are close to the base of the atrial siphon ( Fig 15B View FIGURE 15 ). The duct of the neural gland has numerous apertures along its whole length ( Fig.14 A View FIGURE 14 ; 15B,C). The branchial sac ( Fig. 14B View FIGURE 14 ) has round papillae some of them with a basal extension. A line of long pointed papillae extends on the right side of the oesophageal aperture ( Fig. 14B View FIGURE 14 ). The gut in a double loop has no inflated rectal pouch (Fig; 13; 14A). The musculature ( Fig.14A View FIGURE 14 ) has exactly the same design as that described for P. nigra .

This ascidian may be an albino specimen as even in formalin P. nigra keeps its deep black colour even stored in formalin during many years.

Kingdom

Animalia

Phylum

Chordata

Class

Ascidiacea

Order

Enterogona

Family

Ascidiidae

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