Grubeulepis fimbriata (Treadwell 1901)

Grubeulepis fimbriata (Treadwell, 1901)

Eulepis fimbriata Treadwell, 1901:190, figs. 23, 24.

Grubeulepis fimbriata.—Pettibone, 1969:23, figs. 15–17 [synonymy].—Nonato and Luna, 1970:74.—Rullier and Amoureux, 1979:155.

Pareulepis fimbriata.—Nonato and Luna, 1969:75, pl. 2: figs. 15–25.

Grubeulepis fimbriata (Treadwell)

Eulepis fimbriata Treadwell, 1901, p. 190, figs. 23, 24.

Eulepethus fimbriatus.—Treadwell, 1939, p. 196, fig. 25.

Pareulepis fimbriata.—Hartman, 1944, p. 14.

Not Eulepis fimbriata.—Augener, 1918, p. 153 (=Grubeulepis augeneri, new species).

Not Pareulepis fimbriata.—Hartman, 1939, p. 79 (=G. ecuadorensis, new species, and G. mexicana).—Rullier, 1965, p. 16 (=Grubeulepis augeneri, new species.)—Reish, 1968, p. 73 (=Grubeulepis mexicana).

MATERIAL EXAMINED.—Mayaguez Harbor, Puerto Rico, Fish Hawk station 6061, 33 meters, sand, mud, 20 January 1899—4 syntypes (USNM 15640). Mayaguez, Puerto Rico, 11-15 meters, 10 December 1954, M. J. Allen, collector—3 specimens (AHF).

Caledonia Bay, Panama (Atlantic), shore, April 1939, station A 52-39—1 specimen (AHF).

DESCRIPTION.—Length 14-24 mm, width, including setae, 4-6 mm, segments 37-38. Elytra 12 pairs, becoming more elongate posteriorly; first pair elytra smooth except occasionally with 2 clavate papillae on anterior border; rest of elytra with variable number lateral leaflike processes arranged between anterior and posterior rounded lobes; twelfth pair each with 15-17 processes (Figures 15a, 17d-f). Branchiae 12 pairs, inflated, with distal branchial cirri (Figure 16a). Dorsal cirri, on segments 3 and 6, subulate (Figure 15g). Posterior lamellae, beginning on segment 28, oval (Figure 17a).

Prostomium covered by segment II and attached along midline on posterior half; median antenna short, globular, inserted anterodorsally on prostomium; lateral antennae slightly longer, conical, inserted more ventrally; ventral palps elongate-tapered, extending slightly beyond tentacular cirri; 2 pairs small eyes on anterolateral border (easily overlooked); nuchal organs oval, lateral to prostomium (Figure 15b-d, h). Tentacular parapodia (I) with short subulate tentacular cirri, ventral pair slightly longer than dorsal pair; 2 acicula; 2 tufts capillary setae (Figure 15d,e,h). Ventral buccal cirri on segment II thicker and longer than those following (Figure 15f).

Biramous parapodia supported by light amber-colored acicula and neuropodial hammer-shaped distal plates (Figures 16a, b; 17a). Notopodial acicula with hooked tips. Notopodial capillary setae smooth and spinous, forming long spreading bundles on posterior parts of notopodia; stout light amber-colored notopodial hooks, beginning on segment III, smooth, with tips finely tapered or flattened spoon-shaped (Figures 16c, 17b). Neuropodial acicula with hammer-shaped distal plates; thin-walled inflated areas on anterodorsal parts of neuropodial bases (Figure 16b). Neurosetae of several kinds: 1-2 upper pectinate setae (Figure 16d); limbate and nonlimbate capillaries (Figures 16e, 17c); neurosetae of posterior region similar to anterior region (without any stouter upper neurosetae; without acicular neurosetae in anterior segments). Ventral cirri of anterior few segments slender, tapered (Figure 15g); those of following segments globular,

with short slender tips (Figure 16a, b). Pygidium with single long anal cirrus on right side; cirrus finely papillate along one side. Pharynx not extended.

DISTRIBUTION.—West Indies, Atlantic side Panama. Intertidal to 33 meters.