Streblosoma hartmanae Kritzler, 1971

Londoño-Mesa, Mario H., 2009, Terebellidae (Polychaeta: Terebellida) from the Grand Caribbean region 2320, Zootaxa 2320 (1), pp. 1-93 : 74-76

Streblosoma hartmanae Kritzler, 1971

Streblosoma hartmanae, Kritzler, 1971:904 , Figs 1–8 ; 1984:52–66, 68, Figs 52–63, 64A-I.—Londoño-Mesa & Carrera- Parra, 2005:6–8; Fig. 2 A-F.

Type material: Holotype USNM 43209 and Paratypes USNM 43210 (3) Alligator Harbor , Franklin County, Florida, USA (29º54'11.7"N 84º24'51.4"W), 28.XII.1969. Coll. and donated H. Kritzler .

Additional material: Gulf of Mexico : Florida: USNM 90570 (1) Florida (27º56'30"N 83º53'W), VIII.1977 , 43m. Veracruz State : UANL 5508 (2) Blanca, 14.IV.2002 ; Pl. 2. UANL 6060 B (1) Hornos, 30.V.2003 ; Pl. 1. UANL 6062 (1) Pajaros, 30.V.2003 ; Pl. 3. Campeche State: ECOSUR TERE-6 27A (1) Laguna de Terminos, VII.1984 . TERE-6 30–27A (1) Laguna de Terminos , VI.1984 . TERE-6 (2) Laguna de Terminos , 20.XI.1984 . Yucatan State : TERE-6 RIA2 (five vials with many, 1, 27, 1 and 1 specimens), Ria Lagartos (21°35'36.9"N 88°03'21.4"W), 31.V.2005 . Mexican Caribbean : Quintana Roo State: TERE-6 HOL1 (three vials with many, 1, 1) Holbox (21º32'34.5"N 87º28'11.6"W), 2.VI.2005 . TERE-6 HOL4 (3) Holbox (21º32'34.5"N 87º28'11.6"W), 2.VI.2005 . TERE-6 HOL5 (1) Holbox (21º32'364.5"N 87º28'11.6"W), 2.VI.2005 . TERE-6 HOL10 (1) Holbox , 3.VI.2005 . TERE-6 RM3 (1) Ascension Bay, Sian Ka’an

(19º37'05.57"N 87º35'33.3"W), 29.IV.1987. UQROO E-5 (1), E-6 (5) Chacmochuk (21º21'22.2"N 86º50'22.2"W), 5.IV.2000. Panamanian Caribbean : ECOSUR TERE-6 (3) Club de Yates, Colon, 1.VI.2002. TERE-6 (1) Club de Yates, Colon, 3.VI.2002. TERE-6 (2) Sherman, Primer Arroyo, Colon, 30.V.2002. Panamanian Pacific: TERE-6 (1) Culebra Point, Balboa, 30.V.2002. TERE-6 (1) Puerto Rodman, Balboa, 31.V.2002. Antilles: ZMA V.Pol. 1008A (2) Spaans Lagoen, NW side, Aruba, 1.I.1949; Rhizophora , mud, tidal and lower zone. ZMA V.Pol. 1451 (1) Chasalie Exp., Tortugas, 1896 (as Thelepus setosus ). ZMA V.Pol. 1453 (3) Gulf of Cariaco, Venezuela (10°30'30"N 63°55'14"W), 31.I.1896 (as Thelepus setosus ). ZMA V.Pol. 5288 (17) Spaans Lagoen, NW near new bridge, Aruba, Sta. 2018; 5.VIII.1970; limestone with mud, 0.3– 0.5m. ZMA V.Pol. 1596A (1) Lac. Boca jewfish, SN of sorobon, Bonaire, 24.VIII.1967; sandy mud. ZMA V.Pol. 5304 (1) St. Joris Baai, S shore, SE, Curaçao, Sta. 1643; 23.X.1968; decaying timber, mud, Thalassia . UMML 22.985 (5) Gulf of Honduras (19°52'N 85°29'W), R/V “Pillsbury” Sta. 577; 22.V.1967; 4413m. UMML 22.986 (1) Lesser Antilles, (17°26'N 63°23'W), R/V “Pillsbury” Sta. 965; 20.VII.1969; 24m. UMML 22.987 (1) Santa Lucia Island, R/V “Pillsbury” Sta. 913; 10.VII.1969; 4m. Eastern North America: AMNH 4178 (7), AMNH 4151 (1) St. Catherines Island, Liberty County, Georgia (no more data).

Diagnosis: Holotype complete, 85 segments, 58mm long, thorax 24mm long, 1mm wide. Eyespots abundant, larger near margin, arranged in two or three lines. First pair of branchiae with 7–9 filaments, placed laterally and anteriorly to first pair of notopodia; second and third pairs with 5–6 filaments each, placed dorsally to notopodia. Nephridial papillae not seen. Fourteen ventral shields. Thirty pairs of notopodia; notochaetae of two lengths asymmetrically bilimbate. Pairs of neuropodia short and narrow along the body; thoracic and abdominal uncini avicular, with dental formula MF:2:3. Pygidium smooth.

Staining pattern: Only ventral shields stain deeply. Notopodial glandular tissue also stains well; other structures not stained.

Variations: Paratypes have 70 segments, 50mm long, thorax 1mm wide; first pair of branchiae with 12–14 filaments, placed laterally and anteriorly to first pair of notopodia; second and third pairs with 7–8 filaments, and 5–6 filaments, respectively; and 28 pairs of notopodia. Other variations are presented in additional specimens; the total length may be 11–50mm, and thoracic width 0.4–2.1mm. Complete specimens have 53–75 segments, and 20–42 pairs of notopodia meaning relations segments/chaetigers of 1.7–3.3. Thus, the number of segments with notochaetae does not depend on the total number of segments present. Ventral shields vary from segments 1–2, along 11–16 segments. Eyespots forming continuous row across dorsum, lateral groups may be absent. Commonly, specimens have anterior chaetae longer than posterior ones, as it is in some other species of terebellids, such as Terebella verrilli , and Streblosoma species. The uncinal formula may be MF:2.1. In juveniles, the number of branchial filaments is 4 for the first pair of branchiae, 2 for the second and third pairs, while in adults there are up to 21 filaments for the first pair of branchiae, and 13–14 filaments for the second and third pairs. Nevertheless, juveniles are recognized not only by the low number of branchial filaments, but also by having smaller filaments and fewer tentacles. Specimens from Balboa and Colon, Panama, have long digitate nephridial papillae on segments 3, 4, 5, and on segments 4, 5, 6, respectively for each locality, placed posterior to notopodium. Some specimens present a yellowish tube with small sand grains, or whitish tube with thin sea grass filaments, which depends on the available material, not being a diagnostic feature.

Discussion: A complete description of the species is given by Londoño-Mesa and Carrera-Parra (2005), based upon additional specimens from the Mexican Caribbean . The type specimen was not available for this study, although the original description is extensive. This species was considered occurring in the Caribbean ; nevertheless, it has been found on the Pacific side of Panama, near the Panama Canal. This distribution could be due to the effect of the ships crossing the Canal, perhaps transporting planktonic larvae or juveniles, from coast to coast by ballast water. Similar distributions have been found for other species of Terebellidae by Londoño-Mesa (2006).

Type locality: Alligator Harbor , Franklin County, Florida .

Distribution: Georgia and Florida, USA; Gulf of Mexico, Mexican Caribbean , Panamanian Caribbean and Pacific, Aruba, Bonaire, Curaçao. From shallow to deep waters.

Figures

FIGURE 1. Uncini types: A. Avicular. B. Pecinate. MF: Main Fang. Sr: Subrostrum. USr: Upper Subrostrum. LSr: Lower Subrostrum. SrP: Subrostral Process. SrA: Subrostral Appendix. AP: Anterior Process. AF: Anterior Filament. Bs: Base. PP: Posterior Process. PF: Posterior Filament. Cp: Capitium. Oc: Occipitium. UOc: Upper Occipitium. LOc: Lower Occipitium.

FIGURE 2. Amaeana sp. 1., (USNM 90555): A. Ventral view. B. Dorsal view. C. Lateral View. D. Anterior ventral shields. E. Abdomen in ventral view. F. Thoracic notopodia from chaetiger 4. G. Fascicle of notochaetae from chaetiger 4. H. Abdominal notopodia from segment 16. I. Abdominal spines from segment 16. J. Pygidium. Scale bars: A,B,C,E: 1.7mm; D: 1.3mm; J: 3.8mm; F,H: 0.4; G: 0.7mm; I: 0.06mm.

FIGURE 3. Biremis blandi (Holotype 47976): A. Ventral view. B. Dorsal view. C. Anterior end in dorsal view. D.Anterior end in ventral view. E-F. Nephridial papillae. G. Neuropodia. H. Neuropodium from segment 16. I. Uncinus segment from 16. J. Abdomen in dorsal view and pygidium. Scale bars: A,B: 12mm; C,D: 9mm; E,F: 3.1mm; G: 1.3mm; H: 0.2mm; I: 0.02mm.

FIGURE 4. Enoplobranchus sanguineus (Syntype YPM 8909): A. Dorsal view. B. Anterior end in dorsal view. C. Anterior end in ventral view. D. Ventral view. E. Lateral view. F. Thoracic notopodia from segment 4. G. Notopodia from segment 5. H. Notopodia from mid-thoracic region. I. Abdominal notopodia. Scale bars: A,D,E: 5.5mm; B,C: 2.7mm; F: 0.4mm; G: 0.5mm; H: 0.5mm; I: 0.6mm.

FIGURE 5. Lysilla caribe sp. nov., (UMML 22.1000 2Cc): A. Ventral view. B. Fascicle of notochaetae from segment 4. C. Parapodia from segment 8. Polycirrus angeli sp. nov., (Holotype UANL 6490): D. Thoracic region in dorsal view. E. Thoracic region in ventral view. F. Fascicle of notochaetae from segment 8. G. Uncini from segment 8. Scale bars: A,D,E: 1mm; B,C,F: 0.5mm; G: 0.02mm.

FIGURE 6. Polycirrus purpureus. Type specimens of P. luminosus (Hypotype YPM 1311): A. General view. B. Thoracic region in lateral view. C-D. Thoracic region in ventral view. E. Fascicle of notochaetae from anterior thoracic region. F. Notochaeta from anterior thoracic region. G-H. Uncini from anterior thoracic region. Scale bars: A: 1.85mm; B,C,D: 1mm; E: 0.5mm; F: 0.05mm; G: 0.02mm.

FIGURE 7. Eupolymnia crassicornis: A. Anterior end. B. Chaeta. C. Uncinus (improved from Schmarda, 1861). Eupolymnia magnifica (Syntype USNM 4799): D. Anterior thoracic region in lateral view. E. Anterior end in lateral view. F. First seven parapodia in lateral view. G. Branchiae: longer (right) from segment 2, shorter (left) from segment 4. H. Bilimbate notochaetae from segment 10. I. Uncinus from segment 5. J. Uncinus from segment 11. K. Uncinus from segment 25. Eupolymnia nebulosa (NHM 1910.2.1): L. Bilimbate notochaeta from segment 11. M. Uncinus from segment 5. N. Uncinus from segment 11. O. Uncinus from segment 25. Scale bars: A,B,C: No original scale; D: 6mm; E,F: 3.6mm; G: 6mm; H,L: 0.9mm; I-K,M-O: 0.08mm.

FIGURE 8. Eupolymnia rullieri sp. nov., (Holotype ECOSUR 088): A. Thoracic region lateral view. B. Anterior end in ventral view. C. Anterior end in lateral view. D-F. Anterior end in dorsal view. G. Anterior thoracic region in lateral view. H. Branchiae: longer (right) from segment 2, shorter (left) from segment 4. I. Bilimbate notochaeta from segment 10. J. Uncinus from segment 5. K. Uncinus from segment 11. L. Uncinus from segment 25. Scale bars: A: 7.5mm; B,C: 1.6mm; D,E,F: 2.3mm; G: 1.9mm; H: 2.1mm; I: 0.05mm; J,K,L: 0.02mm.