Monniotus ramosus Millar, 1988, Millar, 1988

Monniot, Françoise, 2012, Some ascidians from the southern coast of Madagascar collected during the “ AtimoVatae ” survey, Zootaxa 3197, pp. 1-42: 22

publication ID

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

DOI

http://doi.org/10.5281/zenodo.4893784

persistent identifier

http://treatment.plazi.org/id/3055E11F-FF85-FF84-71A5-CF20FAFC6D14

treatment provided by

Plazi

scientific name

Monniotus ramosus Millar, 1988
status

 

Monniotus ramosus Millar, 1988  

( Figure 18 View FIGURE 18 )

Monniotus ramosus Millar, 1988: 826   fig 1, Mozambique.

Stations. TR 1 ( MNHN A 1 MON 6).

Madagascar, Tulear. Vasseur col. 1964 ( MNHN A 1 MON 4).

A single colony of about thirty zooids was collected during the Atimo Vatae survey (Fig; 18 A), but a second colony from Tulear comes from P. Vasseur material. The dichotomic ramification of the colonies is that described and figured n by Millar. Several ramified lobes arise from a common base; each group measures about 3.5cm. The thorax ( Fig. 18 View FIGURE 18 C) and the abdomen ( Fig. 18 View FIGURE 18 B) are enclosed independently in a sandy tunic but their post-abdomens are united in a common peduncle.

The colony from the south of Madagascar is only female with ovaries and larvae. The colony from Tulear is male with a short double row of testis vesicles in the post-abdomen at a short distance from the gut loop. All zooids have 15 rows of stigmata, without parastigmatic vessels ( Fig. 18 View FIGURE 18 D). The larvae 1.2mm long are as described and figured by Millar.

This species is recollected for the first time. Its distribution is restricted to Madagascar. Other species of Monniotus   are known from the Pacific Ocean: M. australis ( Kott, 1957)   and M. radiatus Kott, 1992   from Australia have only 10 rows of stigmata and parastigmatic vessels. M. papillosus Monniot F. & Monniot C., 2001   from New Guinea has 18 rows of stigmata with parastigmatic vessels. M. pacificus Monniot F.& Monniot C., 2001   from Palau has 20 rows of 40 stigmata, high papillae and an areolated stomach. M. paucistigma Monniot F. & Monniot C., 2008   from New Guinea has only 4 rows of stigmata, papillae both on transverse and parastigmatic vessels.

MNHN

Museum National d'Histoire Naturelle

Kingdom

Animalia

Phylum

Chordata

Class

Ascidiacea

Order

Enterogona

Family

Protopolyclinidae

Genus

Monniotus

Loc

Monniotus ramosus Millar, 1988

Monniot, Françoise 2012
2012
Loc

Monniotus ramosus

Millar 1988: 826
1988