Psammolyce flava Kinberg, 1856

Cruz-Gómez, Christopher, 2022, Pelogeniinae Chamberlin, 1919 (Annelida, Sigalionidae) from the Grand Caribbean Region, European Journal of Taxonomy 807, pp. 1-59 : 51-55

publication ID	https://doi.org/ 10.5852/ejt.2022.807.1717
publication LSID	lsid:zoobank.org:pub:67DAF0D7-9D9F-4F0F-8004-9CCE0071BF33
DOI	https://doi.org/10.5281/zenodo.6421725
persistent identifier	https://treatment.plazi.org/id/03CB87CF-C66D-FF99-B817-F8FBB23AFB97
treatment provided by	Felipe
scientific name	Psammolyce flava Kinberg, 1856
status

Treatment

Psammolyce flava Kinberg, 1856 View in CoL

Figs 23–24 View Fig View Fig

Psammolyce flava Kinberg, 1856: 388 View in CoL

Psammolyce flava View in CoL – Kinberg 1858: 31, pl. 9 fig. 44, pl. 10 fig. 65. — Pettibone 1997: 4, figs 1–3 (syn., redescr.).

Material examined

MEXICO • 1 incomplete spec.; Yucatán shelf; 23°04′ N, 89°56′ W; O/V Justo Sierra; depth 215 m; 27 Nov. 2012; Sara B. Balam leg.; ECOSUR-P3231 GoogleMaps .

UNITED STATES OF AMERICA • 1 incomplete spec., 43 segments, 1.7 cm long, 1.1 cm to segment 30, 0.6 cm wide; Florida; 26°15′ N, 78°48′ W; R/V Gerda, Stn 927; depth 476 m; 29 Sep. 1967; UMML 6720-927 View Materials GoogleMaps .

VENEZUELA • 1 incomplete spec., 45 segments, 2.4 cm long, 1.5 cm to segment 30, 0.6 cm wide; off Los Rayitos Beach; 10°55′ N, 66°18′ W; R/V Pillsbury, Stn 739; depth 257 m; 23 Jul. 1968; UMML 6806-739 View Materials GoogleMaps .

Description (non-type specimen ECOSUR-P3231)

BODY. Pale orange, long, broad ( Fig. 23A View Fig ); 89 segments, 9 cm long, 1.8 cm to segment 30, 0.9 cm wide. Middorsal line visible, not covered with foreign particles ( Fig. 23E–F View Fig ). Venter partially covered only with globular papillae ( Fig. 23G View Fig ).

PROSTOMIUM. Spherical. Two pairs of eyes, anterior eyes larger, inserted antero-ventrally. Lateral antennae short, slender, with short bulbous ceratophores, styles shorter, dorsally fused with tentacular segment, partially covered by median antennal ceratophore ( Fig. 23D View Fig ). Median antenna with bulbous ceratophore, twice as long as prostomium, with transverse ridges; style slender, long, 6× as long as ceratophore. Middorsal lobe of segment II absent. First segment directed anteriorly; fused with tentacular segment; biramous, chaetae simple verticillate. Dorsal tentacular cirri missing, ventral cirrus 2 × as long as neuropodia length; right palp lost, left palp long, reaching segment seven; with inner palpal sheath ( Fig. 23C View Fig ).

ELYTRA. First anterior elytra missing, posterior elytra oval with one medial process and two lateral processes ( Fig. 24D View Fig ), elytral surface with flat and pedunculate globular papillae, elytral margin with short or long dendritic papillae ( Fig. 24H–K View Fig ).

RIGHT PARAPODIUM FROM SEGMENT II ( Fig. 23H View Fig ). Notopodia conical, papillated, short, half as long as neuropodia, notopodial flange leaf-shaped. With up to 150 simple verticillate notochaetae, shortest ones ⅓ as long as notopodia, longest ones 4 × as long ( Fig. 23I View Fig ). Neuropodia conical, papillate, larger than notopodia; with a distal slender appendage, shorter than neuropodia. Neurochaetae only falcigers; all blades bifurcate, unit A with falcate tips: unit A, four falcigers with handles slender with 6 transverse rows of spines, blades long, 24 × as long as wide ( Fig. 23J View Fig ); unit B, two falcigers with handles thick with 6 transverse rows of spines, blades long, 28× as long as wide ( Fig. 23K View Fig ); unit C, four falcigers with handles slender with 9 transverse rows of spines, blades long, 28–30 × as long as wide ( Fig. 23L View Fig ); unit D, eight falcigers with handles slender with 7–8 transverse rows of spines, blades long, 27–30× as long as wide ( Fig. 23M View Fig ).

RIGHT PARAPODIUM FROM SEGMENT III ( Fig. 23N View Fig ). Notopodia conical, papillate, short, ⅓ as long as neuropodia; notopodial flange leaf-shaped, papillate. With up to 100 simple verticillate notochaetae, tips hooked, shortest ones half as long as notopodia, longest ones 4 × as long as notopodia ( Fig. 23O View Fig ). Neuropodia truncated, papillate, larger than notopodia. Neurochaetae only falcigers; all blades bifurcate: unit A, five falcigers with handles thick with transverse rows of denticles, blades long, 11–12 × as long as wide ( Fig. 23P View Fig ); unit B, two neurochaetae with handle thick with 1–2 transverse rows of spines and subdistal transverse rows of denticles, blades lost ( Fig. 23Q View Fig ); unit C, five falcigers with handles slender with subdistal transverse rows of denticles, blades long, 25–26 × as long as wide ( Fig. 23R View Fig ); unit D, 35

falcigers with handles slender, smooth, blade long, 38–40× as long as wide ( Fig. 23S View Fig ).

RIGHT PARAPODIUM FROM SEGMENT 23 (MIDDLE SEGMENT) ( Figs 23T View Fig , 24A–B View Fig ). Notopodia truncated, papillate, short, ⅓ as long as neuropodia. With up to 80 simple verticillate notochaetae, shortest ones 3× as long as notopodia, longest ones 5× as long ( Figs 23U View Fig , 24C View Fig ). Neuropodia truncated, papillate, larger than notopodia. Neurochaetae only falcigers; all blades bifurcate: Unit A, three falcigers with handles thick with subdistal transverse rows of denticles, blades medium-sized, 8–10× as long as wide ( Fig. 23V View Fig ); unit B, four falcigers with handles thick with subdistal transverse grooves, blades long, 11–12× as long as wide ( Figs 23W View Fig , 24G View Fig ); unit C, seven falcigers with handles slender with subdistal transverse rows of denticles, blades medium-sized, 9–10× as long as wide ( Fig. 23X View Fig ); subunit 1, three falcigers with handles thick with subdistal transverse rows of denticles, blades long, 12–13× as long as wide ( Fig. 23Y View Fig ); unit D, five falcigers with handles slender with subdistal transverse rows of denticles, blades long, 15–16 × as long as wide ( Figs 23Z View Fig , 24E–F View Fig ).

POSTERIOR REGION. Lost.

Remarks

The original description of P. flava was based on a specimen from Rio de Janeiro and consisted of four lines ( Kinberg 1856); later, the description was completed with illustrations, including of the jaws ( Kinberg 1858). Hartman (1942a) redescribed the species with specimens from Puerto Rico, and, in the same paper, she suggested that Eupholoe acuminata Treadwell, 1934 should be regarded as a junior synonym of P. flava , she did, however, not study its type material. Subsequently, Pettibone (1997) redescribed P. flava using type and non-type material and kept E. acuminata as a synonym. The holotype of P. flava is from Rio de Janeiro, and the holotype of E. acuminata is from off N British Virgin Islands, indicating that this species has an apparent wide distribution in the Atlantic Ocean. Pettibone (1997) pointed out that the holotype is very damaged.