Pseudopolydora floridensis, Vı & Delgado-Blas, 2008
|
publication ID |
https://doi.org/ 10.1080/00222930701831240 |
|
persistent identifier |
https://treatment.plazi.org/id/03E87546-2569-FF84-B282-FD45FDDDFB64 |
|
treatment provided by |
Carolina |
|
scientific name |
Pseudopolydora floridensis |
| status |
sp. nov. |
Pseudopolydora floridensis View in CoL sp. nov.
( Figure 5 View Figure 5 )
Type material
Atlantic coast: Lake Worth, Florida (26 ° 369N, 80 ° 039W), 29 May 1974, holotype (USNM-1073346); Lake Worth , 29 May 1979, one paratype; coll. J. Garcı «a, 29 May 1979, two paratypes (ECOSUR-0086) .
Description
Holotype
Incomplete specimen with 39 anterior segments, 14 mm long, 1.6 mm wide at chaetiger 3– 6. Prostomium T-shaped, with two anterolateral processes. Four black eyes present in trapezoidal arrangement. Caruncle extending posteriorly to chaetiger 7. Occipital antenna present ( Figure 5A View Figure 5 ). Peristomium wider than long, expanded laterally ( Figure 5B View Figure 5 ). Palps extending posteriorly for 14 segments. Body and palp pigments absent.
Chaetiger 1 well separated from peristomium; long cirriform notopodial lamellae and triangular neuropodial lamellae; neuropodial lamellae longer than following segments ( Figure 5A View Figure 5 ); unilimbate neurochaetae present; notochaetae absent. Chaetigers 2–4 with well-developed notopodial fascicles of unilimbate chaetae arranged in two rows: shortest and thickest chaetae in anterior row ( Figure 5C View Figure 5 ); posterior row longer than anterior row, with chaetae becoming longer in upper side of fascicle ( Figure 5D View Figure 5 ), and lower side shorter and thinner than chaetae from first row ( Figure 5E View Figure 5 ); in middle and posterior segments with tufts of two types of chaetae: unilimbate chaetae ( Figure 5F View Figure 5 ), and serrated chaetae ( Figure 5G View Figure 5 ) thinner and shorter than unilimbate chaetae. Neuropodia of chaetigers 2–4, 6 and 7 with dense fascicle of broad bilimbate capillary chaetae. Bidentate hooded hooks from chaetiger 8, not accompanied by capillaries, with up to 25 hooks per fascicle; hooks with reduced angle between teeth and a constriction on shaft ( Figure 5H View Figure 5 ).
Chaetiger 5 similar in size and shape to chaetigers 4 and 6; noto- and neuropodial postchaetal lamellae well developed; with superior dorsal geniculate unilimbate capillaries ( Figure 5I View Figure 5 ), fewer in number than those chaetae on chaetigers 4 or 6, and ventral winged capillaries ( Figure 5J View Figure 5 ). Two kinds of major spines arranged in a Ushaped double row, with pennoned spines in outer row and falcate spines in inner row; pennoned spines with curved tip and constriction between tip and shaft ( Figure 5K View Figure 5 ), numbering up to 16 per fascicle; falcate spines with a subterminal protuberance ( Figure 5L View Figure 5 ), numbering up to 14 per fascicle.
Branchiae on chaetigers 7–38; all basally free from notopodial lamellae. Glandular pouches largest and paired in segments from chaetiger 6–7 ( Figure 5A View Figure 5 ), pouches not evident in other segments.
Gizzard-like structure in intestinal tract absent.
Pygidium unknown.
Female, with oocytes developing in clusters in chaetigers 20–39.
Variability
Largest specimen holotype; paratypes smaller, with T-shaped prostomium. Four red eyes in trapezoid arrangement. Palps extending posteriorly for 14 segments. Caruncle extending to chaetigers 6–7. Major spines of chaetiger 5 arranged in a U-shaped double row; with 14–21 pennoned spines, and 11–16 falcate spines. Branchiae from chaetiger 7, continuing to chaetiger 27. Hooded hooks from chaetiger 8, with up to 15–27 hooks per fascicle.
Ecology
Inhabits muddy-sand tubes in soft bottoms.
Remarks
Pseudopolydora floridensis sp. nov. is similar to P. corniculata Radashevsky and Hsieh, 2000 in the shape of the peristomium and notopodial lamellae on chaetiger 1, caruncle extending over chaetiger 6, and large paired glandular pouches present in chaetigers 6 and 7; P. floridensis differs from P. corniculata in having triangular neuropodial lamellae in chaetiger 1 instead of ciriform lamellae, chaetiger 5 with spines arranged in a U-shaped double row instead of a weak J-shaped almost vertical row, major spines with a subterminal protuberance instead of simple spine with slightly bent tips.
Etymology
The specific name refers to the collecting site.
Distribution
Atlantic coast: Lake Worth , Florida .
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.