Bryopesanser pesanseris (Smitt, 1873),

Judith L Winston, 2016, Bryozoa of Floridan Oculina reefs, Zootaxa 4071 (1), pp. 1-81: 59-61

publication ID

http://doi.org/10.11646/zootaxa.4071.1.1

publication LSID

lsid:zoobank.org:pub:D47C792F-E91D-40A6-ABB7-FA7810578562

persistent identifier

http://treatment.plazi.org/id/19362D2E-202F-FF8C-BBA5-F9D1FBC9FC00

treatment provided by

Plazi

scientific name

Bryopesanser pesanseris (Smitt, 1873)
status

 

Bryopesanser pesanseris (Smitt, 1873) 

( Fig. 33View FIGURE 33; Table 32)

Hippothoa pes anseris Smitt, 1873: 43  , pl. 7, figs 159, 160.

Escharina pesanseris: Osburn 1914: 207  .

Mastigophora pesanseris: Osburn 1927: 130  ; 1940: 452; 1952: 479; Canu & Bassler 1928 a: 133, pl. 21, fig. 9, pl. 34, fig. 4; Hastings 1930: 722; Marcus 1939: 142.

Escharina pesanseris: Cook 1968: 195  ; Long & Rucker 1970: 19; Winston 1982: 145, fig. 77; 1984: 26, figs 53–55.

Bryopesanser pesanseris: Tilbrook 2006: 253  , pl. 55 A –C; Winston & Woollacott 2009: 275, fig. 27.

Material examined. VMNH no. 70648, 70649; USNM no. 1283257.

Description. Colonies encrusting, small, unilaminar ( Fig. 33View FIGURE 33 A, B). Zooids relatively large, about 0.70 by 0.52 mm, oval to subhexagonal, with distinct grooves between. Frontal-shield calcification granular with many small pores. Orifice semicircular, with straight beaded proximal rim and small, narrow, teardrop-shaped central sinus. A low peristome rims orifice and bears 6–8 distolateral spines. Paired latero-oral, distally directed avicularia, with complete crossbars; acute rostra ( Fig. 33View FIGURE 33 C, D) flared into terminal groove to support characteristic webbed ‘duckfoot’ mandibles ( Fig. 33View FIGURE 33 E, F). Ooecia small relative to zooid size, globular, imperforate.

Remarks. Members of the family Escharinidae (Tilbrook 2006)  occur in many tropical and subtropical habitats, but the small size of colonies has until recently prevented study of the amount of diversity that occurs in the group.

Distribution. Western Atlantic: Cape Hatteras to Brazil, Caribbean, Gulf of Mexico.

TABLE 32. Measurements in mm of Bryopesanser pesanseris (Smitt, 1873).

                  Lavm Wavm
Mean 0.692 0.524 0.118 0.101 0.172 0.215        
  0.109 0.061 0.009 0.008 0.014 0.025        
  0.504 0.414 0.108 0.090 0.144 0.180        
  0.900 0.648 0.126 0.108 0.198 0.252