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underside
 

young, 4 mm
 

juvenile shell




 
Phanerophthalmus
cf. albocollaris Heller & Thompson,1983
 
Phanerophthalmus cf. albocollaris
Maximum size:  20 mm.

Identification:  This species has a very small external shell that is much shorter than the body and is covered by the parapodia. The animal is pale violet, densely flecked with darker violet and with white frosting on the posterior lobes of the head shield. It is less slender than Phanerophthalmus smaragdinus and the posterior margin of the head shield is more deeply lobed than in that species.

Natural history:  Phanerophthalmus cf. albocollaris is known from only two animals found in a rocky area and a Halimeda kanaloana bed between 7 and 19 m (23 and 62 ft). The mature animal showed a nocturnal behavior pattern while held and buried itself in sand during the day.

Distribution:  Maui: Phanerophthalmus albocollaris may be widely distributed in the Indo-Pacific.

Taxonomic notes:  There appear to be several similar species in the Indo-Pacific. (Manuel Malaquias, pers. com)  So, the Hawaiian animals may or may not turn out to be P. albocollaris. It was first recorded in Hawaii off Makena, Maui by PF on Aug. 31, 1992.

Photo:  CP: 20 mm; Airport Beach, Maui; May 25, 2008.

Observations and comments:

Note 1:  ( )
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