Eupolymnia nebulosa ( Montagu, 1818 )

Londoño-Mesa, Mario H. & Carrera-Parra, Luis F., 2005, Terebellidae (Polychaeta) from the Mexican Caribbean with description of four new species, Zootaxa 1057, pp. 1-44 : 15-17

publication ID

https://doi.org/ 10.5281/zenodo.170120

publication LSID

lsid:zoobank.org:pub:7F3849B0-5A9B-488B-BCBF-8AA9689D00A0

DOI

https://doi.org/10.5281/zenodo.6267118

persistent identifier

https://treatment.plazi.org/id/03B587EF-7C73-3105-FEF3-A1BAFD54C2F6

treatment provided by

Plazi

scientific name

Eupolymnia nebulosa ( Montagu, 1818 )
status

 

Eupolymnia nebulosa ( Montagu, 1818)  

Figures 4 View FIGURE 4 D–F

Terebella nebulosa Montagu, 1818: 343   , Plate 12, Figure 2 View FIGURE 2 . Eupolymnia nebulosa Hartman, 1959: 504   ; Kritzler, 1984: 52 –57, Figures 52 –53, 54a–d; Holthe, 1986 a: 128.

Material examined: Mexican Caribbean: ECOSUR TERE­ 10 (1) Mujeres Island (21 ° 13 ’ 39.7 ’’N 86 ° 43 ’ 53.5 ’’W), 26 May 1962. (1) Puerto Morelos (21 ° 36 ’ 53.2 ’’N 87 °04’ 31.9 ’’W), 13 Sep. 1986. (2) Playa Aventuras (20 ° 20 ’ 15.5 ’’N 87 ° 20 ’ 31.7 ’’W), 22 Mar. 1992, 2 m, under coralline rock. (1) QR 7 Chankanaab, Cozumel Island (20 ° 56 ’ 38 ’’N 86 ° 59 ’ 35 ’’W), 2 Apr. 1992. (2) QR 8 Xcacel (20 ° 20 ’ 16 ’’N 87 ° 20 ’ 52 ’’W), 3 Apr. 1992, below coralline rock. (1) M 27 Xahuayxol (18 ° 30 ’ 15 ’’N 87 ° 45 ’ 32 ’’W), 1 Oct. 1996. (3) Xahuayxol (18 ° 30 ’ 15 ’’N 87 ° 45 ’ 32 ’’W), 1 Oct. 1996. (1) Isla Blanca (21 ° 20 ’ 16.8 ’’ N 86 ° 47 ’ 40.4 ’’W), May 1997. (2) Majahual (18 ° 40 ’09.6’’N 87 ° 43 ’01.4’’W), 21 Jul. 1998, 1.5 m. (5) Leeward of Contoy Island (21 ° 30 ’ 8.4 ’’N 86 ° 47 ’ 45.3 ’’W), 23 Feb. 1999. (3) Playa Corona, Cozumel Island (20 ° 27 ’ 45 ’’N 86 ° 59 ’04’’W), 25 Feb. 1999. (2) Majahual (18 ° 40 ’09.6’’N 87 ° 43 ’01.4’’W), 21 Mar. 2000. (1) Majahual (18 ° 40 ’09.6’’N 87 ° 43 ’01.4’’W), 22 Mar. 2000, 2 m. (19) Southern, Contoy Island (21 ° 27 ’ 33 ’’N 86 ° 46 ’06’’W), 28 Feb. 2001. (2) Leeward of Contoy Island (21 ° 30 ’ 8.4 ’’N 86 ° 47 ’ 45.3 ’’W), 1 Mar. 2001. (4) Southern, Contoy Island (21 ° 30 ’ 8.4 ’’N 86 ° 47 ’ 45.3 ’’W), 2 Mar. 2001. (1) Contoy Island (21 ° 30 ’ 8.4 ’’N 86 ° 47 ’ 45.3 ’’W) 3 Mar. 2001. (1) Rio Indio (18 ° 54 ’ 15.4 ’’N 87 ° 38 ’ 36.1 ’’W), 17 Mar. 2001, in seagrass. (1) Majahual (18 ° 40 ’09.6’’N 87 ° 43 ’014’’W), 18 Mar. 2001. (1) Playa Azul, Cozumel Island (20 ° 32 ’07’’N 86 ° 56 ’ 10 ’’W), 25 Mar. 2001. (1) Southern Cozumel Island (20 ° 17 ’ 28 ’’N 86 ° 57 ’ 28 ’’W), 26 Mar. 2001, 3 m. (8) Majahual (18 ° 40 ’09.6’’N 87 ° 43 ’01.4’’W), 18 May 2002, in dead coral. (3) Xahuayxol (18 ° 30 ’ 15 ’’N 87 ° 45 ’ 32 ’’W), 2 Aug. 2002, 1.5– 2 m. (1) R/V “Edwin Link”, sta. 2772, Isla de la Pasión, Cozumel Island (20 ° 39 ’ 59 ’’N 86 ° 49 ’ 64 ’’W), 19 Aug. 1990. (1) R/V “Edwin Link”, sta. 2777, Southern Chinchorro Bank (18 ° 26 ’02N 87 ° 18 ’ 82 W), 21 Aug. 1990. (4) R/V “Edwin Link”, sta. 2792, Eastern Mujeres Island (21 ° 14 ’N 86 ° 36 ’W), 28 Aug. 1990.

Description: Specimen complete, with 127 segments, 160 mm long; thorax 15 mm long, 6 mm wide ( Figure 4 View FIGURE 4 D). Tentacles pale, long, numerous. Tentacular membrane dorsally reduced and with visible lateral lobes, aside of lower lip. Eyespots dark, small, less pigmented anteriorly. Upper lip with free edge as a thin spoon­like membrane, projecting forwards. Lower lip always well developed, swollen or thin. Three pairs of lateral lappets from segment 2. First lappet longer and ventrolateral; second and third pair as short lateral folds; third pair shorter in height, close to first pair of notopodia. Three pairs of branchiae on segments 2–4, first pair at least twice as long as the second, last pair the shortest, about one fourth the size of the first; branchiae with 3 levels of ramification, with long transparent filaments; last pair of branchiae with short and spiraled filaments; branchiae with short and stout stalks. Seven pairs of nephridial papillae present; starting on segment 3; the first one three times as long as the other papillae, present between the bases of branchiae and first pair of lateral lappets. Following papillae present between noto­ and neuropodia; papilla as short tube, like truncate cones. Ten ventral shields, starting from segment 3, very distinct; shields rectangular, anterior ones broader, progressively narrowing along the thorax; the second ventral shield extending laterally joining the first pair of lateral lappets. Abdomen with thin and long ventral shields, reaching up to the pygidium, and forming midventral groove. Notopodia present from segment 4 extending through 17 segments. Notochaetae long bilimbate ( Figure 4 View FIGURE 4 E). Dorsal chaetae longer than ventral chaetae. Neuropodia with uncini arranged in single rows from segment 5 to 10; in double rows from segment 11–20, arranged in face to face position; abdomen with uncini arranged in single rows to the pygidium; abdominal neuropodia well developed but short, one third as long as thoracic ones, with uncini on the anterior face, main fang anteriorly pointed. Thoracic and abdominal uncini similar to each other; uncini with dental formula MF: 2: 3 ( Figure 4 View FIGURE 4 F); upper subrostrum formed by the main fang and well­developed, rounded subrostral process; lower subrostrum concave finishing in a curved anterior region, without anterior process or filament; curved basis, finishing into a short posterior process, without filament; long and concave occipitium finishing into a capitium with two long teeth above the main fang and a second row with three teeth. Pygidium circular, with 18–19 anal papillae. Tube 200 mm long, 15 mm wide, curved; with big fragments of coral, shells, red and white foraminifers, and calcareous algae, all attached and wrapping around an inner fragil membrane. Anterior end broader. Animal lives under coralline rocks, in contact with the sediment. Live specimens long, with reddish transversal lines in each segments, or yellowish with brown lines.

Var ia t io n: The total number of segments in all specimens complete revised varies from 85 to 140 segments.

Remarks: The specimens from the Mexican Caribbean do not differ from those belong to the North Sea ( BMNH 1910.2.1./ 45 / 6, BMNH 1969.56, BMNH 1971.137, LACM­ AHF SMF 4647, ZMA VPOL 2470, ZMA VPOL 1158 ZMA VPOL 1159). E. nebulosa   seems to be a species with a wide distribution, and morphology alone can not separate populations into different species. It is possible that future molecular studies will demonstrate that E. nebulosa   is in fact a complex of sibling species.

Distribution: Amphi­Atlantic.

AHF

Allan Hancock Foundation, University of Southern California

SMF

Forschungsinstitut und Natur-Museum Senckenberg

ZMA

Universiteit van Amsterdam, Zoologisch Museum

Kingdom

Animalia

Phylum

Annelida

Class

Polychaeta

Order

Terebellida

Family

Terebellidae

Genus

Eupolymnia

Loc

Eupolymnia nebulosa ( Montagu, 1818 )

Londoño-Mesa, Mario H. & Carrera-Parra, Luis F. 2005
2005
Loc

Terebella nebulosa

Holthe 1986: 128
Kritzler 1984: 52
Hartman 1959: 504
Montagu 1818: 343
1818