Euherdmania cf. digitata Millar, 1963

Lambert, Gretchen, Lee, Serina Siew-Chen & Teo, Serena Lay-Ming, 2021, Ascidians collected during the 2013 Singapore Strait International Marine Biodiversity Workshop, Zootaxa 4933 (1), pp. 1-38 : 6-7

publication ID	https://doi.org/10.11646/zootaxa.4933.1.1
publication LSID	lsid:zoobank.org:pub:56476487-ABC9-4C1C-A73F-D39E55DB9005
persistent identifier	https://treatment.plazi.org/id/BB593765-FFAC-E737-FF6C-F9BEFDAAFF3A
treatment provided by	Plazi (2021-02-18 07:13:21, last updated by GgImagineBatch 2021-02-18 07:15:03)
scientific name	Euherdmania cf. digitata Millar, 1963
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Treatment

Euherdmania cf. digitata Millar, 1963 NEW RECORD

Figure 2B

As with all species in this genus, the zooids are separate, attached only by basal stolons. Siphons six-lobed, stomach plicated. U-shaped heart at posterior end of postabdomen.

#3869, very tiny immature colony. Zooids contracted and broken, no abdomens, gonads or larvae.

#4624, small transparent colony, pale yellowish zooids very contracted. Siphon lobes rounded, no additional serrations. Length of largest zooid in tunic up to 15 mm, out of tunic contracted, about 8 mm or less. Thorax with many fine longitudinal muscles. About 15 rows of stigmata. Stomach with about 8-10 longitudinal plications. Anus ends at posterior end of thorax. Gonads not well developed. A cluster of testes just behind the gut loop in the best zooid. No larvae.

Distribution: Fiji, Australia, Palau, Coral Sea, Tahiti, Ponape.

Detailed descriptions and illustrations: Millar (1963), Kott (1981, 1992), Monniot C. & Monniot F. (1987). Additional reference: Nishikawa (1984).

References

Kott, P. (1981) The ascidians of the reef flats of Fiji. Proceedings of the Linnean Society of New South Wales, 105, 147 - 212.

Kott, P. (1992) The Australian Ascidiacea part 3, Aplousobranchia (2) and Supplement 2. Memoirs of the Queensland Museum, 32, 375 - 655.

Millar, R. H. (1963) Australian ascidians in the British Museum (Natural History). Proceedings of the Zoological Society of London, 141, 689 - 746. https: // doi. org / 10.1111 / j. 1469 - 7998.1963. tb 01623. x

Nishikawa, T. (1984) Ascidians from the Truk Islands, Ponape Island and Majuro Atoll (Tunicata, Ascidiacea). Proceedings of the Japanese Society of Systematic Zoology, 27, 107 - 140.