Pycnoclavella tabella Kott, 1990

Kott, Patricia, 2006, Observations on non-didemnid ascidians from Australian waters (1), Journal of Natural History 40 (3 - 4), pp. 169-234: 183-184

publication ID

http://doi.org/ 10.1080/00222930600621601

persistent identifier

http://treatment.plazi.org/id/011D87C1-FFFC-CD52-1FCA-FC69E036FD1E

treatment provided by

Felipe

scientific name

Pycnoclavella tabella Kott, 1990
status

 

Pycnoclavella tabella Kott, 1990  

( Figure 8B View Figure 8 )

Pycnoclavella tabella Kott 1990a, p 77   .

Distribution

Previously recorded (see Kott 1990a): South Australia (Spencer Gulf); Victoria (Portsea). New records   : South Australia (Kangaroo I., 10–12 m, SAM E3292 View Materials )   ; Tasmania (Tasman Peninsula, 15–17 m, SAM E3291 View Materials )   ; Victoria (Portsea, SAM E3290 View Materials )   . The species is usually in large aggregates on rocky walls and roofs of caves and overhanging ledges. This species has been recorded by scuba divers from relatively shallow waters.

Description

Specimens have the characteristic tangle of sandy, fragile, thin basal stolons, and narrow, often branching vertical stalks containing the long abdomina, also encased in thin, sandy test. On top of these vertical branches are the small spherical thoraces in thin, transparent, sand-free test, sometimes with a greenish oily appearance in life.

Stomozoa australiensis Kott, 1990  

( Figure 8C View Figure 8 )

Stomozoa australiensis Kott 1990a, p 157   .

Distribution

Previously recorded (see Kott 1990a): South Australia (Great Australian Bight). New records: South Australia (Kangaroo I., 4–8 m, SAM E3228 E3278 E3285 View Materials )   .

Description

Firm, cartilaginous, translucent irregularly branching stalks. Rounded heads on the terminal branches have thoraces of the semi-embedded zooids with their separately opening lobed apertures (surrounded by the characteristic dentate lobes) covered by transparent flexible test and projecting free like bubbles from the firmer test of the stalks. Zooids have a red thoracic wall when first preserved but subsequently are brownish yellow in preservative. The long oesophageal neck is very contracted in these specimens. A single large spherical larva is being incubated in the atrial cavity of specimens collected in March (SAM E3228).

Remarks

Specimens are as previously described.

SAM

South African Museum

Kingdom

Animalia

Phylum

Chordata

Class

Ascidiacea

Order

Aplousobranchia

Family

Clavelinidae

Genus

Pycnoclavella

Loc

Pycnoclavella tabella Kott, 1990

Kott, Patricia 2006
2006
Loc

Pycnoclavella tabella

Kott P 1990: 77
1990
Loc

Stomozoa australiensis

Kott P 1990: 157
1990