Bryozoa of Floridan Oculina reefs
Author
Judith L Winston
text
Zootaxa
2016
4071
1
1
81
journal article
10.11646/zootaxa.4071.1.1
8ffe5a88-06f7-44af-95aa-5fd49e0302c4
1175-5326
260490
D47C792F-E91D-40A6-ABB7-FA7810578562
Parasmittina indiginella
sp. nov.
(
Fig. 26
;
Table 25
)
TABLE 25.
Measurements in mm of
Parasmittina indiginella
sp. nov.
Lz
|
Wz
|
Lo
|
Wo
|
Lov
|
Wov
|
N |
18 |
18 |
18 |
18 |
16 |
16 |
Mean |
0.488 |
0.326 |
0.086 |
0.088 |
0.194 |
0.242 |
SD |
0.056 |
0.039 |
0.007 |
0.007 |
0.018 |
0.015 |
Min |
0.378 |
0.270 |
0.072 |
0.072 |
0.162 |
0.216 |
Max |
0.558 |
0.414 |
0.099 |
0.099 |
0.234 |
0.270 |
FIGURE 26.
Parasmittina indigenella
sp. nov.
:
A,
portion of colony;
B,
several zooids with ooecia;
C,
close-up of distal end of zooid showing avicularia, peristome and oecium;
D,
close-up of orifice showing bases of six orificial spines;
E,
primary orifice with broad, low lyrula;
F,
avicularium with solid cross bar. Scale bars: A, 1 mm; B, 0.5 mm; C, D, 0.1 mm; E, 0.2 mm; F, 0.05 mm.
Material examined.
Holotype
: VMNH no. 70639.
Paratype
: USNM no. 1283252.
Etymology.
Latin,
indiginus
, born in a country, native, plus the diminutive suffix -
ella
, i.e. the little native
Parasmittina
.
Diagnosis.
Parasmittina
with a low broad lyrula, 5–6 orificial spines, an ooecium with a larger inner area with scattered, raised pores, a narrow outer layer, and one or two triangular frontal avicularia, oriented toward the orifice peristome.
Description.
Colony encrusting (
Fig. 26
A). Zooids rectangular to oval in shape with a thickly calcified lowridged frontal shield. Small, but closely spaced marginal areolae forming a double row of pores (
Fig. 26
C). Primary orifice with low, broad lyrula, almost occupying entire proximal rim; rounded lateral and distal rim smooth (
Fig. 26
D). Secondary orifice raised on low peristome (
Fig. 26
C); distal part of peristome bearing 5–6 jointed hollow spines; proximal half with U-shaped pseudosinus (
Fig. 26
D). One or two elongate triangular avicularia near zooid margins, angled toward peristome. Ooecia globular, embedded, with narrow imperforate ectooecium and large entooecium with scattered raised pseudopores (
Fig. 26
B, C).
Remarks.
This species is similar to species of
Parkermavella
, except for the presence of a lyrula. It is similar in size and morphology to the Barbadian species
Parkermavella salebrosa
Winston & Woollacott, 2009
, which, however, lacks a lyrula, has more orificial spines (6–7) and small oval avicularia.
Distribution.
Florida,
Oculina
banks.