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Doris viridis
(Pease, 1861)
 
Doris viridis
Maximum size:  15 mm.

Identification:  This is a dusky-gray to dusky-blue dorid with a variable amount of yellow, mid-dorsal pigment. Hawaiian animals have 6-13 gills arranged in a semicircle. (Note 1) There is a dorsal flap covering the gill opening. It differs from Doris pecten in it's dusky color with mid-dorsal yellow pigment.

Natural history:  Doris viridis is known from two animals. The first was found under a rock in a mid-intertidal tide pool. The second was found at < 3 m (< 10 ft) at a moderately exposed site.

Distribution:  Maui: widely distributed in the Indo-Pacific; also in the eastern Pacific.

Taxonomic notes:  It was first recorded in Hawaii from Napili Bay, Maui by CP on May 6, 1993 (assuming specimens referred to this species by Pease were actually Doris pecten). There's some uncertainty in lumping the two animals.

Photo:  PF: 15 mm: found by CP; Napili Bay, Maui; May 6, 1993.

Observations and comments:

Note 1:  Perhaps, the number of gills increases with age. However, the larger animal also shows a notch in the dorsal flap suggesting injury and, perhaps, atypical regeneration.
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