Eusynstyela hartmeyeri Michaelsen, 1904

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 : 20

Eusynstyela hartmeyeri Michaelsen, 1904 NEW RECORD

Figure 7E, F

#2621A, purplish red with orange; wrapped around a coral branch. Colony 6 cm in greatest width, zooids mostly embedded, up to 6–7 mm measured across the siphons. Stomach quite elongated, caecum short and straight. Gonads with two long testes that extend the full length of each gonad as described by Monniot C. (1991b). Single row of six gonads on each side.

Distribution: Hong Kong, Bahrain, Gulf of Suez, Red Sea, Mozambique, New Caledonia, Djibouti, Arabian Gulf, Hawaii, Palau.

References with detailed descriptions: Monniot C. (1991 as E. aliena n. sp.; 2002), Monniot C. & Monniot F. (1997), Monniot F. & Monniot C. (2001). Additional reference: Monniot F. & Monniot C. (2008).

Figures

FIGURE 7. A–D: Amphicarpa duploplicata. A: dissected individual 11 mm in height; B: undissected body inside opened tunic revealing short stolon at posterior end of body; C: opened branchial sac stained with haemalum showing two longitudinal folds per side, with a very short partial fold on ventral right side (on the left in photo), e=endostyle; D: enlarged view of portion of branchial sac showing parastigmatic vessels. E, F: Eusynstyela hartmeyeri. E: whole colony 6 cm in width; F: enlarged view of four zooids each 6–7 mm in width.