Smittoidea granulosa, Figuerola & Gordon & Cristobo, 2018

Figuerola, Blanca, Gordon, Dennis P. & Cristobo, Javier, 2018, New deep Cheilostomata (Bryozoa) species from the Southwestern Atlantic: shedding light in the dark, Zootaxa 4375 (2), pp. 211-249 : 223-225

Smittoidea granulosa n. sp.

( FIg. 8 ; TAbLE 10)

Etymology. LATIN ‘ granulΟsus ’, gRANULAR, ALLUDINg TO THE gRANULAR FRONTAL SHIELD.

Material examined. HΟlΟtype: CRBA-58262, STN PAT0209DR12 (SAMPLE COATED WITH gOLD), COLONY C. 10 MM LONg, 8 MM WIDE.

Description. COLONY ENCRUSTINg, UNILAMINAR; COLONY SIZE C. 10 MM LONg, 8 MM WIDE. AUTOZOOIDS HEXAgONAL, FLAT. FRONTAL SHIELD FLAT OR CONVEX MEDIALLY, gRANULAR, bORDERED bY RAISED RIDgES, AND 14–17 MARgINAL AREOLAR PORES. PRIMARY ORIFICE WIDER THAN LONg, PROXIMAL EDgE WITH SHORT, bROAD, SLIgHTLY CURVED-EDgED LYRULA, OCCUPYINg PROXIMATELY HALF WIDTH OF ORIFICE; CONDYLES CONSPICUOUS, SHARPLY POINTED, DOWN-CURVED. NO ORAL SPINES. PERISTOME LOW, WITH MEDIO-PROXIMAL NOTCH, SOMETIMES AbOVE A SMALL OVAL SUbORAL AVICULARIUM, WITH SEMI-ELLIPTICAL MANDIbLE, PARALLEL TO FRONTAL PLANE, DIRECTED PROXIMALLY, CROSSbAR SLENDER. OVICELL RECUMbENT ON FRONTAL SHIELD OF DISTALLY SUCCEEDINg AUTOZOOID, HEMISPHERICAL; ECTOOECIUM WITH LARgE, UNCALCIFIED FRONTAL AREA; THE EXPOSED ENDOOECIUM PIERCED bY NUMEROUS, IRREgULAR PORES.

Remarks. SmittΟidea granulΟsa n. sp. RESEMbLES S. cancellata HAYWARD & WINSTON, 2011, IN THE OVERALL APPEARANCE, bUT DIFFERS IN HAVINg MUCH LARgER ZOOIDS, gRANULAR FRONTAL SHIELD AND OOECIUM (NOT DIMPLED), MORE NUMEROUS MARgINAL AREOLAR PORES (14–17, MOSTLY 17, COMPARED TO 10–15), AND IN THE AbSENCE OF DIMORPHIC AVICULARIA.

n, number of measurements made; SD, standard deviation

Figures

FIGURE 8. Smittoidea granulosa n. sp., HOLOTYPE. A, PORTION OF A COLONY; B, OVICELLS; C, DETAIL OF THE PRIMARY ORIFICE WITH LYRULA;D, DETAIL OF AN OVICELL WITH A SMALL OVAL SUbORAL AVICULARIUM.SCALE bARS:A, 1 MM; B, 500 ΜM;C–D, 200 ΜM.