Diplosoma virens (Hartmeyer, 1909)

Hirose, Euichi & Nozawa, Yoko, 2020, Fig. 6 in Bruggmanniella sanlianensis Lin, Yang & Tokuda, 2020, sp. nov., Zoological Studies 59 (19), pp. 1-11 : 4

Diplosoma virens (Hartmeyer, 1909)

Specimens: NMNS-8141-004 (Maobitou), -005 (Gongzibi), -023 (Wushibi).

Colonies were irregularly shaped sheets about 2-5 mm thick ( Fig. 2I ). The tunic was tougher than in other photosymbiotic Diplosoma species. The pattern of stigmata was 6-6-6-5 ( Fig. 2J ), and the retractor muscle emerged from halfway down the esophagus.

Figures

Fig. 2. Didemnum and Diplosoma species. (A, B), Didemnum molle at Shimen (A, colonies; B, tunic spicules). (C, D), Diplosoma gumavirens at Xiaoyeliu (C, colonies; D, thorax with 5-5-5-4 pattern of stigmata). (E, F), Diplosoma ooru at Gonzibi (E, colonies; D, thorax with 5-6-5-4 pattern of stigmata). (G, H), Diplosoma simile at Maobitou (G, colonies; H, thorax with 6-6-6-5 pattern of stigmata). (I, J), Diplosoma virens at Gonzibi (I, colonies; J, thorax with 6-6-6-5 pattern of stigmata). (K, L), Diplosoma watanabei at He-mei (K, colonies; L, thorax with 6-7-6-5 pattern of stigmata). White arrows in A indicate some cloacal aperture. an, anus; es, esophagus; rm, retractor muscle. Scale bars: B = 20 µm; D, F, H, J, L = 0.1 mm.