Haplosyllis loboi Paola, San Martín & Martin, 2006

Lattig, Patricia & Martin, Daniel, 2009, A taxonomic revision of the genus Haplosyllis Langerhans, 1887 (Polychaeta: Syllidae: Syllinae), Zootaxa 2220, pp. 1-40 : 23

Haplosyllis loboi Paola, San Martín & Martin, 2006

Haplosyllis loboi Paola, San Martín & Martin, 2006 : 347.352, fig. 1–4.

Examined material. Argentina, La Plata. One paratype MNCN 16.01/9034. Expedition G– II 12, 38 º05’3’’S 57º22’W, coarse sand, coll. “Lobo” Orensanz col., 1975.

Diagnosis. Robust body, up to 7.8 mm long. Trepan with 5–8 small, triangular teeth. Chaetae with long denticles on US of MF, reaching base of proximal tooth; MJP diagonal ( Fig. 2 C). Aciculae straight.

Reproduction. Unknown.

Host: The specimens were found in coarse sandy sediments, but the presence of sponge spicules on some worms suggested a possible association with a host sponge ( Paola et al. 2006).

Distribution. SW Atlantic Ocean, La Plata, Argentina.

Remarks. The long and numerous spines on US of MF of Haplosyllis loboi are similar to the serration of Trypanoseta sp. recently described by Aguado et al. (2008). H. loboi is the unique species of Haplosyllis recorded from the SW Atlantic.

Figures

FIGURE 2. Different chaetal shapes according to MJP. A—straight, relatively short (left), or long (right), B—diagonal, C—curved and short. Lines are: A, B, distance between base of proximal tooth and beginning of MF; B, beginning of MF (small), slope of MJP and MF (long).