Eudistoma purpuropunctatum Lambert, 1989

Lambert, Gretchen, 2019, The Ascidiacea collected during the 2017 British Columbia Hakai MarineGEO BioBlitz, Zootaxa 4657 (3), pp. 401-436 : 407

Eudistoma purpuropunctatum Lambert, 1989

Figure 3C

IHAK 60 BHAK 3247 UF 2565. Rattenbury Pinnacle, Scuba, 17–20 m depth .

Apparently not common; only one large colony 10 cm in diameter was collected during the three week survey. Morphology exactly as described by Lambert (1989). Tunic usually a pale lavender, though may be darker in areas with more dense purple pigment in the tunic. Colony encrusting, thickly irregular in shape. Known only from British Columbia and Washington ( Lambert 1989; Lamb & Hanby 2005).

Figures

FIGURE 3. Aplousobranchia, Polycitoridae. A, B: Cystodytes lobatus. A: whole colony, photo G. Paulay; B: small part of tunic showing disc–shaped spicules. C: Eudistoma purpuropunctatum 10 cm in width. D–F: Eudistoma ritteri. D: separated lobes of a colony; E: part of a different colony; F: thorax of single zooid showing the siphons and the three rows of stigmata. Scale bars: A, 1 cm; B, 0.5 mm; D, 1.3 cm; E, 0.5 cm; F, 1 mm.