Labioporella tuberculata Winston, Vieira & Woollacott, 2014

Ramalho, Laís V., Taylor, Paul D., Moraes, Fernando Coreixas, Moura, Rodrigo, Amado-Filho, Gilberto M. & Bastos, Alex C., 2018, Bryozoan framework composition in the oddly shaped reefs from Abrolhos Bank, Brazil, southwestern Atlantic: taxonomy and ecology, Zootaxa 4483 (1), pp. 155-186 : 158

Labioporella tuberculata Winston, Vieira & Woollacott, 2014

( Fig. 2B )

Labioporella tuberculata Winston et al., 2014: 144 , figs 2, 3; Vieira et al., 2016: 75, figs 32–34; Bastos et al., 2018: table 1.

Material examined. Abrolhos Bank, Bahia State, Brazil: MNRJ-Bry1337, Parcel dos Abrolhos, 15 m depth, February 2014, col. R. Moura, G. Amado-Filho & A. Bastos.

Short description. Colony encrusting, autozooids rectangular with rounded distal edges, disposed in quincunx and separated from each other by a raised edge. Cryptocyst granular and porous. A pair of tubercles frequently present at the proximal corners. Avicularia absent in this material.

Geographic distribution. Alagoas and Bahia states ( Vieira et al. 2016; Bastos et al. 2018; present study).

Remarks. Specimens found at Abrolhos were very similar to those described by Winston et al. (2014) and Vieira et al. (2016). Labioporella tuberculata resembles L. dipla Marcus, 1949 , also described from Brazil (Espírito Santo State), but L. dipla has a prominent tubercle on the distal wall beneath the operculum, smaller zooids and lacks tubercles at the proximal corners of the zooids. Another similar species is L. granulosa ( Canu & Bassler, 1928b) , described from the Gulf of Mexico, which also lacks corner tubercles.

Figures

FIGURE 2. Scanning electron micrographs of six bryozoan species. A. Steginoporella magnilabris, part of the colony showing the shape and disposition of the autozooids. B. Labioporella tuberculata, part of the colony with some autozooids. C, D. Crassimarginatella winstonae n. sp., general view of the colony with autozooids and one avicularium. E. Detail of the colony showing an interzooidal avicularium. E. Exechonella sp., general view of a colony fragment. F. Reptadeonella bipartita, general view of colony part showing some autozooids with elliptic orifice, median avicularium and ascopore. G, H. Celleporaria atlantica, detail of some zooids showing orifices, and suboral avicularia on umbos. H. Detail of an autozooid showing an avicularium at the base of the umbo.