Archidistoma diminutum ( Kott, 1957 ) sensu

Monniot, Françoise, 2012, Some ascidians from the southern coast of Madagascar collected during the “ AtimoVatae ” survey, Zootaxa 3197, pp. 1-42: 25-26

publication ID

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

DOI

http://doi.org/10.5281/zenodo.4893793

persistent identifier

http://treatment.plazi.org/id/3055E11F-FF88-FF88-71A5-CB76FBC0694A

treatment provided by

Plazi

scientific name

Archidistoma diminutum ( Kott, 1957 ) sensu
status

sensu

Archidistoma diminutum ( Kott, 1957) sensu   lato

Clavelina diminuta Kott, 1957: 89   .

Pycnoclavella diminuta: Kott 1990: 73   and synonymy, Australia.

Archidistoma diminuta: Monniot F. & Monniot C. 1996: 203   , Micronesia and synonymy. Monniot C. 1997 a: 195, Mozambique. Meliane & Ramos-Espla 2001, Arabian peninsula.

Station. TA 51 ( MNHN A 3 ARC 20)

The colony is made of columnar opaque lobes arising from a common base. Transparent bulbs protrude at their top-side, they contain the thoraces of the zooids. Brown pigment cells can be seen in the tunic and in the zooids preserved in formalin. The zooids, 1cm in length, occupy the whole length of the colony lobes. The oral tentacles, in two orders of size, are located at the base of an undulated velum The number of stigmata is difficult to count, about 35 to 40 in the first row on the right side. The first and the third stigmata rows are curved along the dorsal line. There are 4 rapheal languets. The stomach is in posterior position in the abdomen No gonads are present in this material.

The shape of the colony, the size of the zooids and the number of stigmata lead to identify the material as A. diminutum sensu   lato. The highly variable colonies and the wide geographic distribution of the species in the western Indian and western Pacific oceans suggest the presence of more than a single species.

MNHN

Museum National d'Histoire Naturelle

ARC

Atlantic Reference Centre

Kingdom

Animalia

Phylum

Chordata

Class

Ascidiacea

Order

Enterogona

Family

Polycitoridae

Genus

Archidistoma

Loc

Archidistoma diminutum ( Kott, 1957 ) sensu

Monniot, Françoise 2012
2012
Loc

Archidistoma diminuta:

Monniot 1996: 203
1996
Loc

Pycnoclavella diminuta:

Kott 1990: 73
1990
Loc

Clavelina diminuta

Kott 1957: 89
1957