Fodinella atlantica Winston, Vieira & Woollacott, 2014

Almeida, Ana C. S., Souza, Facelucia B. C., Farias, Jamile, Alves, Orane F. S. & Vieira, Leandro M., 2018, Bryozoa on disarticulated bivalve shells from Todos os Santos Bay, northeastern Brazil, with the description of two new species, Zootaxa 4434 (3), pp. 401-428 : 416-417

Fodinella atlantica Winston, Vieira & Woollacott, 2014

( Fig. 8A, B ; Table 9)

Fodinella atlantica WINSTON, VIEIRA & WOOLLACOTT, 2014 : P. 218, fIg. 50.

Material examined. UFBA 1631, on valve of Dallocardia muricata . UFBA 1656, UFBA 1660, on valves of Pinctada imbricata .

Description. Colony encrusting ( Fig. 8A ), unilaminar. Zooids oval to hexagonal, separated by slightly raised lateral walls; with increasing calcification, becoming polygonal, with zooidal boundaries almost indistinct. Frontal wall smooth, with 4–6 moderate to large marginal pores. Primary orifice ( Fig. 8B ) bell-shaped, almost obscured by secondary orifice; distal edge with 12–16 rounded denticles; proximal edge with a broad, shallow U-shaped sinus; condyles robust, triangular, downturned, located at proximal corners of orifice; 6–8 tubular oral spines. Secondary orifice well developed, with a medioproximal robust tubercle. Frontal avicularium small, often absent, oval, with complete crossbar; located near zooidal margins. A large avicularium occur, somewhat oblong; foramen oval; calcified palate occupying about one-fourth of rostrum length. Ovicell ( Fig. 8A , arrow) prominent; ooecia subglobular, with a frontal tubercle; ectooecium non-calcified frontally, leaving a large, semicircular fenestra.

Remarks. Fodinella atlantica was recently described from the Bahia coast. It is the unique record of the genus Fodinella Tilbrook, Hayward & Gordon, 2001 in the Atlantic ( Winston et al. 2014).

Distribution. Western Atlantic: Brazil (Bahia) ( Winston et al. 2014).

Figures

FIGURE 8. A, B. Fodinella atlantica WINSTON, VIEIRA & WOOLLACOTT, 2014, UFBA 1656. A. OVERVIEW Of A COLONY WITH OVICELLED ZOOIDS (ARROW). B. CLOSE-UP Of A PRIMARY ORIfICE, SHOWINg THE ORAL SPINES, A CONDYLE, AND A LARgE AVICULARIUM. C–F. Rhynchozoon brasiliensis ALMEIDA, SOUZA, MENEgOLA & VIEIRA, 2017, UFBA 1620. C. VIEW Of A COLONY WITH SEVERAL fRONTAL AVICULARIA. D. DETAIL Of PRIMARY ORIfICE WITH A BROADLY V-SHAPED SINUS. E. CLOSE-UP Of AUTOZOOIDS WITH SUBORAL AND fRONTAL AVICULARIA. F. GROUP Of OVICELLED ZOOIDS. SCALE BARS: A, 250 µM; B, 50 µM; C, F, 200 µM; D, E, 100 µM.