Aplidium lunacratum Kott, 1992, Kott, 1992

Monniot, Françoise, 2012, Some ascidians from the southern coast of Madagascar collected during the “ AtimoVatae ” survey, Zootaxa 3197, pp. 1-42: 9-11

publication ID

http://doi.org/ 10.5281/zenodo.246182

DOI

http://doi.org/10.5281/zenodo.4893758

persistent identifier

http://treatment.plazi.org/id/3055E11F-FF98-FF9B-71A5-CA9CFF016A39

treatment provided by

Plazi

scientific name

Aplidium lunacratum Kott, 1992
status

 

Aplidium lunacratum Kott, 1992  

( Figures 6 View FIGURE 6. A B, 7)

Aplidium lunacratum Kott, 1992: 558   fig. 86 pl. 14 a–c, nom. nov. for Psammaplidium ordinatum Herdman & Riddell, 1913   , west and south Australia; Kott 2003, New South Wales.

Stations. TR 6 ( MNHN A 1 APL.B 551). TR 17 ( MNHN A 1 APL.B 552). TA 10 ( MNHN A 1 APL.B 550).

The colonies, up to 10 cm in extent are in hard sandy crusts 0.5 to 2cm thick or in club-shaped lobes. In a same colony the surface varies, the protruding parts show hollows edged by a crest with a honey-combed aspect and some other sectors are flat ( Fig. 6 View FIGURE 6. A B). The zooid systems are circular, obvious when they are cup-shaped but the zooid apertures are hardly visible among the sand coating. The thoraces of the zooids are perpendicular to the colony surface and the long post-abdomens are tangled in the sandy tunic. The tubular oral siphon ends in 6 yellow or brown lobes. The atrial siphon is elongated in a tube at the level of the third stigmata row. A pointed or bi-dentate languet is distinctly inserted above the siphon ( Fig. 7 View FIGURE 7 C) as figured by Kott (1992 fig. 26 C–D). A small round protrusion with dark pigment cells is located behind the siphon. The thoracic musculature is weak with few thin fibres, and the body wall has dark pigment cells in specimens in formalin. There are 10 to 12 rows of 11 stigmata interrupted along the dorsal line and on each side of the endostyle ( Fig. 7 View FIGURE 7 A). The stomach has 5 round folds. The postabdomen is thin, sometimes more than 1cm long. The ovary is far from the abdomen and followed by the testis. A single larva is incubated in atrial cavity ( Fig. 7 View FIGURE 7 B). The trunk is 0.8mm long. The 3 adhesive papillae are short separated by 2 protrusions. The anterior part of the larva is covered with numerous small ampullae ( Fig. 7 View FIGURE 7 B).

A. lunacratum   has a wide geographic distribution spread from the southern and western Australia to Madagascar.

MNHN

Museum National d'Histoire Naturelle

Kingdom

Animalia

Phylum

Chordata

Class

Ascidiacea

Order

Enterogona

Family

Polyclinidae

Genus

Aplidium

Loc

Aplidium lunacratum Kott, 1992

Monniot, Françoise 2012
2012
Loc

Aplidium lunacratum

Kott 1992: 558
1992