Serpula vossae Bastida-Zavala 2012

Tube color brownish, or light brown to white; with 6–8 longitudinal ridges, all similar in size; some tubes with shallow transverse ridges, forming a rugged surface, other tubes lacking transverse ridges; most tubes lacking peristomes, two have only one peristome with appearance of a groove with shallow growth lines. Tubes lacking alveoli (Fig. 4A, C–D). Body pale yellow (preserved material only, Fig. 4B). TL= 38.5 mm (n=7, r:20–45.5, µ=36.6 ±10.3); THW= 2 mm (n=7, r:1.5–3.4, µ=2.3 ±0.6). Branchial crown with 29 radioles (n=7, r:19–37, µ=30.9 ±6.4) left, and 29 right (n=7, r:12–35, µ=30.9 ±8.8); lacking branchial membrane (Fig. 4E). Peduncle smooth with insertion on left (n=2) or right (n=5); with shallow (n= 4) to well-defined constriction (n= 3) (Figs 3A, C, 4H–J). Pseudoperculum club-shaped, present in all specimens. Operculum with long, deep symmetrical funnel; with a slightly bulbous basal part above constriction (Figs 3A, C, 4H–J). OL= 3.2 mm (n=7, r:2–4.5, µ=3.3 ±0.8), OD= 2 mm (n=7, r:1.4–2.8, µ=2.3 ±0.5). Interradial grooves 2/3 of funnel length. Funnel with 21 radii (n=7, r:21–33, µ=27.4 ±3.7) with rounded tips (Figs 3A, C, 4H–J). Opercular inner surface lacking tubercles (Fig. 3A–D). Collar thick, with short ventral and dorsal lobes. Thorax consists of seven chaetigers. Collar fascicles in three specimens asymmetrical with regard to sizes and number of chaetae; right fascicle with larger and more chaetae than left fascicle (Fig. 4E). Bayonet chaetae with two blunt-elongate teeth, distal blade smooth, lacking proximal rasp (Fig. 4G); hooded (capillary) chaetae present. Thoracic membranes well developed, narrowing toward last thoracic chaetigers, fused ventrally, forming a short apron. Remaining six thoracic chaetigers with hooded (limbate) chaetae of two sizes; saw-shaped uncini. Anterior part of abdomen lacks a distinct achaetous region. Anterior and middle abdominal chaetigers with flat-trumpet chaetae. Posterior chaetigers with ‘capillary’ chaetae. Anterior and posterior uncini saw-shaped.

Tropical Caribbean. Bahamas, Cuba, Mexican Caribbean, Guatemala and Honduran Caribbean (Fig. 6).