Pycnoclavella detorta (Sluiter, 1904)

KOTT, PATRICIA, 2003, New syntheses and new species in the Australian Ascidiacea, Journal of Natural History 37 (13), pp. 1611-1653 : 1617

publication ID

https://doi.org/ 10.1080/00222930110104258

DOI

https://doi.org/10.5281/zenodo.5260167

persistent identifier

https://treatment.plazi.org/id/8B5387D0-256A-9A13-120A-E7B5FC1EFAB0

treatment provided by

Felipe

scientific name

Pycnoclavella detorta (Sluiter, 1904)
status

 

Pycnoclavella detorta (Sluiter, 1904) View in CoL

Podoclavella detorta Sluiter, 1904: 6 View in CoL ; not Kott, 1957b: 130.

Clavelina detorta: Van Name, 1918: 133 View in CoL ; Millar, 1975: 209; Monniot, F., 1988: 202; Monniot and Monniot, 2001: 231.

Pycnoclavella detorta: Kott, 1990a: 71 View in CoL .

Distribution. New records: Queensland (Swain Reefs, QM G305809). The new record confirms that the species is a common component of the West Pacific ascidian fauna (see Kott, 1990a). Larvae are present in the newly recorded specimens (collected in July).

Remarks. Podoclavella detorta: Kott, 1957b (BM 1956. 5.2.19) has been re-examined. The specimens are long, narrow, horny stems up to 5 cm long, containing the long oesophageal neck and the slightly expanded distal part of the abdomen. They are joined to one another at their base by short stolons. However, the thoraces have disintegrated, and it was not possible to confirm Kott’s (1957b) description. Apart from the reported four rows of stigmata and longer and horny stalks, these specimens are like P. detorta . At this stage the significance of the reported differences is not known.

Clavelina auracea Monniot, 1997a is also similar to P. detorta , except for ferilization of the eggs in a brood pouch at the postero-dorsal corner of the abdomen, five (rather than six) rows of stigmata, and the larvae. Although they lack the usual frontal plate of Clavelina larvae, the larval adhesive organs are not inverted tubes as in Pycnoclavellidae . Monniot (1997a) has not described the cerebral vesicle and it is not clear if an otolith is present or not. The affinities of this species are problematical, although the fertilization of eggs at the posterior end of the thorax suggests that it is closer to Clavelina than to Pycnoclavella .

Kingdom

Animalia

Phylum

Chordata

Class

Ascidiacea

Order

Aplousobranchia

Family

Clavelinidae

Genus

Pycnoclavella

Loc

Pycnoclavella detorta (Sluiter, 1904)

KOTT, PATRICIA 2003
2003
Loc

Pycnoclavella detorta:

Kott 1990: 71
1990
Loc

Clavelina detorta:

Van Name 1918: 133
1918
Loc

Podoclavella detorta

Sluiter 1904: 6
1904
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