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Ascidiacea taxon detailsAlloeocarpa aequatorialis Millar, 1953
249790 (urn:lsid:marinespecies.org:taxname:249790)
accepted
Species
marine,
Millar, R. H. (1953). On the collection of ascidians from the Gold Coast. <em>Proc. Zool. oc. London.</em> 123(2): 277-325.
page(s): 317-320, Fig. 22 [details] Available for editors 
Type locality contained in Gold Coast
type locality contained in Gold Coast [details]
Description External appearance. Zooids not closely aggregated in a common test to form a true colony. Instead they are widely...
Description External appearance. Zooids not closely aggregated in a common test to form a true colony. Instead they are widely separated and united only by a long slender tubular strand of epidermis and by a thin ribbon of test in which the epidermal strand is embedded. Test. Thin, semi-transparent, shining, and marked with fine wrinkles. Zooid. Up to 4 mm long. Irregularly ovoid in outline, low and dome-shaped, with the two small openings on the dorsal surface. A very thin basal membrane of test from each zooid spreads out over the substratum. Short projections from the body wall usually form a fringe round each zooid and lie within the thin basal expansion of test. These projections, which are sometimes pigmented, are swollen distally and narrow where they arise from the body wall. In older individuals they tend to disappear. Body purple-grey in preserved material. Body wall. Slender muscle strands pass round the body, mainly in a circular direction. Siphons. Very short, round and not lobed. Tentacles. 20-25. Simple and filiform, of several sizes. Branchial sac. No folds, but on the right side seven, and on the left side six, flat equally spaced longitudinal bars. Eight or nine rows of stigmata. In the ventral part of the branchial sac four stigmata, and in the dorsal part two or three stigmata, in each mesh. Dorsal lamina smooth-edged and moderately wide. Dorsal tubercle. Opening small and round. Gut. the oesophagus leaves the posterior end of the branchial sac and bends ventrally. Stomach on the left ventral side of the branchial sac, short and wide, with about eight prominent folds, of which those nearest the pyloric caecum are shorter than the others. Pyloric caecum moderately large and bent at right angles. Intestine and rectum forming a wide tube of nearly uniform diameter which passes round the left side of the branchial sac and on to its dorsal side. Anal border plain. Gonads. None of the specimens had gonads. [details]
Shenkar, N.; Gittenberger, A.; Lambert, G.; Rius, M.; Moreira da Rocha, R.; Swalla, B.J.; Turon, X. (2024). Ascidiacea World Database. Alloeocarpa aequatorialis Millar, 1953. Accessed at: https://www.marinespecies.org/ascidiacea/aphia.php?p=taxdetails&id=249790 on 2024-04-18
Date action by
original description
Millar, R. H. (1953). On the collection of ascidians from the Gold Coast. <em>Proc. Zool. oc. London.</em> 123(2): 277-325.
page(s): 317-320, Fig. 22 [details] Available for editors  Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Description External appearance. Zooids not closely aggregated in a common test to form a true colony. Instead they are widely separated and united only by a long slender tubular strand of epidermis and by a thin ribbon of test in which the epidermal strand is embedded.Test. Thin, semi-transparent, shining, and marked with fine wrinkles. Zooid. Up to 4 mm long. Irregularly ovoid in outline, low and dome-shaped, with the two small openings on the dorsal surface. A very thin basal membrane of test from each zooid spreads out over the substratum. Short projections from the body wall usually form a fringe round each zooid and lie within the thin basal expansion of test. These projections, which are sometimes pigmented, are swollen distally and narrow where they arise from the body wall. In older individuals they tend to disappear. Body purple-grey in preserved material. Body wall. Slender muscle strands pass round the body, mainly in a circular direction. Siphons. Very short, round and not lobed. Tentacles. 20-25. Simple and filiform, of several sizes. Branchial sac. No folds, but on the right side seven, and on the left side six, flat equally spaced longitudinal bars. Eight or nine rows of stigmata. In the ventral part of the branchial sac four stigmata, and in the dorsal part two or three stigmata, in each mesh. Dorsal lamina smooth-edged and moderately wide. Dorsal tubercle. Opening small and round. Gut. the oesophagus leaves the posterior end of the branchial sac and bends ventrally. Stomach on the left ventral side of the branchial sac, short and wide, with about eight prominent folds, of which those nearest the pyloric caecum are shorter than the others. Pyloric caecum moderately large and bent at right angles. Intestine and rectum forming a wide tube of nearly uniform diameter which passes round the left side of the branchial sac and on to its dorsal side. Anal border plain. Gonads. None of the specimens had gonads. [details] Genetic nomenclature abbreviation Alaequ [details] |