Neoleprea sp. 1

Londoño-Mesa, Mario H., 2009, Terebellidae (Polychaeta: Terebellida) from the Grand Caribbean region 2320, Zootaxa 2320 (1), pp. 1-93 : 45

Neoleprea sp. 1

Figures 12 A-I

Material examined: Antilles: ZMA V.Pol. 7571B (1) Bonaire, Lac, Cas di Meenchi, 24.IX.1975; 0.8–1m.

Description: Complete, 230 segments, 34mm long, thorax 8mm long, 1.7mm wide ( Fig. 12A ). Tentacular membrane well developed; eyespots absent. Tentacles missing. Upper lip rounded, laterally widened. Lower lip narrow, swollen ( Fig. 12B ). Branchiae dichotomous, decreasing in length. Twelve ventral shields, first one widest, then markedly decreasing in size, last one reduced; ventral groove continues to posterior end. Nephridial papillae tubular, on segments 7–23, placed anteriorly, at base of each notopodia ( Fig. 12C ). Twenty-seven pairs of notopodia; chaetae from first segment with notochaetae longer and decreasing in size; chaetae of two lengths ( Fig. 12D ), longer notochaetae symmetrically bilimbate sub-distally, with distal region dentate, slightly oblique ( Fig. 12E ); short chaetae sub-distally smooth and bilimbate, distally dentate region almost perpendicular ( Fig. 12F ). Uncini from segments 5–10 ( Fig. 12G ) MF:3–4:4–5:3:3, PP and PF absent, Oc almost straight; Cp with three series of teeth over a long MF; USr straight, SrP and SrA absent; LSr oblique; AP and AF absent; Bs convex. Uncini in double separated rows ( Fig. 12H ) resembling anterior ones, but smaller. Pygidium smooth ( Fig. 12I ).

Staining pattern: Only upper lip, first segment, and ventral shields stain slightly. The remaining structures remain pale.

Discussion: Neoleprea sp. 1 ., remains undescribed because its description requires better specimens. It differs from Neoleprea sp. A Kritzler, 1984 in terms of the lack of eyespots, having 27 segments with notochaetae, uncini MF:3–4:4–5:3:3, and nephridial papillae present on segments 7–23.

Distribution: Bonaire.

Figures

FIGURE 12. Neoleprea sp. 1., (ZMA V.Pol. 7571B): A. Thoracic region in ventral view. B. Anterior end in ventral view. C. Mid-thoracic region in lateral view. D. Fascicles of notochaetae on notopodium from segment 5. E. Long chaetae from segment 5. F. Short chaetae from segment 5. G. Uncini from segment 10. H. Double rows of uncini from mid-thoracic region. I. Pygidium. Scale bars: A: 1.1mm; B: 0.4mm; C: 0.3mm; D: 0.1mm; E,F: 0.05mm; G: 0.03mm; H: 0.03mm.