Tubulanus riceae Ritger & Norenburg
Type locality: Phragmatopoma worm reef at Walton Rocks Beach, St. Lucie County, on South Hutchinson Island, south of Fort Pierce, Florida, N 27.339012, W 80.233059
Off-white color with dark brown circular bands. Tips of the head and tail are both brown. Refractive granules in 6-8 longitudinal stripes on dorsal body surface.
Tubulanus rhabdotus is much larger than Tubulanus riceae but has a generally similar color pattern of pigmented rings.
As with several other Tubulanus species, Tubulanus riceae tends to contract the posterior region into a knot or spiral. When fragmenting occurs, the body wall cinches at the pigmented annuli and pinches off fragments. This species forms a cellophane-like tube.
The blunt, spatulate head shape is wider than the body width. Two large, wide stripes of reflective granules extend on the dorsal surface to the first pigment band continuing posteriorly as six to eight longitudinal stripes. This species has well-developed lateral sensory organs at the third pigment band and appears to have ocelli-like structures at the tip of the head. The ventral mouth interrupts the first pigment band.
10-55mm long and 0.2-0.4 mm wide
Intertidal worm and coquina reef rubble covered with mixed algal growth and coral rubble at 3-5m depths
Walton Rocks Beach, St. Lucie County, on South Hutchinson Island, south of Fort Pierce, Florida and also found from coral rubble at 3-5m depths at Carrie Bow Cay (Belize) and Bocas del Toro (Panama)