Jasmineira reayi ( McIntosh, 1916 ) McIntosh, 1916

Tovar-Hernández, María Ana, 2007, On some species of Chone Krøyer, 1856 (Polychaeta: Sabellidae) from world-wide localities, Zootaxa 1518, pp. 31-68 : 63

Jasmineira reayi ( McIntosh, 1916) new combination

Chone reayi McIntosh, 1916: 43 –45, Pl. 2, Fig. 10 ; Pl. 3, Fig. 7 ; Pl. 4, Figs 9–13 .

Material examined. Non-type material. Scotland [ NMW.Z] Brae Oilfield: 1997.057.0 0 73, Sta. 95, 9B, fine to medium sand, 110 m, Coll. ERT (4); 1997.057.0 0 75, Sta. 95, 20, fine to medium sand 110 m, Coll. ERT (2).

Diagnosis. Insertion of the branchial lobes not exposed beyond collar. Base of the branchial lobes prominent. Palmate membrane absent. Dorsal pinnular appendages absent. Ventral radiolar appendages: 4 pairs. Anterior peristomial ring lobe not exposed beyond collar, distally entire. Posterior peristomial ring collar: antero-dorsal margin deeply incised, forming two well developed dorsal pockets; two dorsal vascular loops; entire length of mid-dorsal collar margins forms a broad gap; anterior margin of collar crenulated. Thorax with elongate, narrowly hooded chaetae; bayonet chaetae; paleate chaetae with medium-sized mucro; acicular uncini with the main fang surmounted by three rows of teeth equal in size, occupying half the length of main fang; hood present. Glandular ridge on chaetiger 2: narrow. Abdomen with elongate, narrowly hooded chaetae; uncini with the main fang surmounted by teeth equal in size, breast reduced to narrow swelling, handles long.

Remarks. Chone reayi has to be transferred to the genus Jasmineira due to the fact that the species has diagnostic features for Jasmineira : 1) palmate membrane absent; 2) dorsal pinnular appendages absent; 3) dorsal pockets well-developed; 4) vascular loops in the peristomium ; and 5) abdominal uncini with main fang covered by equal-sized teeth, breast reduced to narrow swelling, and handles long. McIntosh (1916) illustred the abdominal uncini (Pl. 2, Fig. 10 ; Pl. 3, Fig. 7 ) and the base of the branchial crown (Pl. 4, Figs 12–13 ), both sui generis of Jasmineira . Jasmineira is often confused with Fabrisabella Hartman, 1969 , because both have abdominal uncini with a reduced narrow breast and long handle; however, they differ in that Fabrisabella lacks dorsal radiolar appendages and bayonet chaetae; both features present in Jasmineira ( Fitzhugh, 1989) .

Figures

FIGURE 7. Chone infundibuliformis (holotype of C. suspecta). (A) Thoracic uncinus; (B) paleate chaeta; (C) spermatozoon; (D) bayonet chaeta; (E – G) anterior abdominal uncini. (A – G) [ZMUC POL – 1748, holotype].

FIGURE 9. Chone letterstedti. (A) Anterior end, dorsal view; (B) same, ventral view; (C) same, lateral view; (D) radiolar tip; (E) posterior abdomen, lateral view; (F) thoracic, elongate, narrowly hooded chaeta; (G – I) paleate chaetae; (J) thoracic uncinus; (K) anterior abdominal uncinus; (L) posterior abdominal uncinus; (M) very elongate, posterior abdominal chaeta. (A – M) [SMNH 576, holotype].

FIGURE 10. Chone murmanica. (A) Anterior end, dorsal view; (B – C) same, ventral views; (D – E) paleate chaetae; (F) thoracic uncinus; (G) spermatozoon; (H – J) posterior abdominal uncini; (K – L) thoracic chaetae; (M) anterior abdominal chaeta; (N) posterior abdominal chaeta. (A – C) Methyl green staining. (A) [ZIRAS 38178]; (B – N) [LACM – AHF Carey OSU].

FIGURE 11. Chone normani. (A) Body, ventro-lateral view; (B) anterior end, ventral view; (C) same, dorso-lateral view; (D) posterior abdominal uncinus; (E) paleate chaeta; (F) thoracic uncinus; (G) abdominal elongate, narrowly hooded chaeta. (A – C) Methyl green staining. (A – G) [NMW. Z 1997.078.0062].

FIGURE 12. Chone oculata. (A) Anterior end, dorsal view; (B) same, lateral view. (A – B) [ZIRAS 47434, syntype]. (B) Methyl green staining.

FIGURE 13. Chone paracincta. (A) Anterior end, lateral view; (B) same, dorsal view; (C) same, ventral view; (D) posterior end. (A – C) Methyl green staining. (A – D) [ZMH P – 15209, syntype].