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Description
Tubulophilinopsis is a genus of headshield slugs (order Cephalaspidea) in the family Aglajidae; they are not true nudibranchs. The genus was established in 2017 by Zamora-Silva and Malaquias following molecular work and includes four species: T. gardineri, T. lineolata, T. pilsbryi and T. reticulata. The species occur in the Indo-West Pacific. T. lineolata lives on tropical sandy bottoms and burrows into them; its prey is not documented, though aglajids in general are predators of other cephalaspideans.
Identification
In T. lineolata the body is mid-sized (40 to 50 mm), pale brown to grey with numerous fine dark brown transverse lines across the back, and indigo tinting at the front and rear tips of the shield. A bump on the head houses a long tubular buccal bulb, and the internal shell is small and flat. These features come from the species description; the sources consulted give no general external diagnosis for the genus.
Species in this genus (1)
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