Cradoscrupocellaria lagaaiji, VIEIRA & JONES & WINSTON, 2013

VIEIRA, LEANDRO M., JONES, MARY E. SPENCER & WINSTON, JUDITH E., 2013, <p class = " HeadingRunIn " align = " left "> <strong> <em> Cradoscrupocellaria </ em>, a new bryozoan genus for <em> Scrupocellaria bertholletii </ em> (Audouin) and related species (Cheilostomata, Candidae): taxonomy, biodiversity and distribution </ strong> </ p>, Zootaxa 3707 (1), pp. 1-63 : 34-35

Cradoscrupocellaria lagaaiji n. sp.

( Fig. 15 , Table 4)

Material examined. Holotype. NHMUK 1975.7 .18.31 ( Fig. 15 ), Scrupocellaria bertholletii, R. Lagaaij det., 04 April 1970, St Raphael , Boulouris, France, Mediterranean.

Type locality. Boulouris , France .

1 NHMUK 1975.7.18.31, Mediterranean. 2 NHMUK 1938.5.2.4, Mozambique. 3 NHMUK 2010.12.6.28, Santos, Brazil. 4 NHMUK 1911.10.1.355, Madeira Island. 5 NHMUK 2010.6.14.3, Panama.

Etymology. Honorific for the late Dutch paleontologist and bryozoan taxonomist Robert Lagaaij (1924–1975).

Diagnosis. Chitinous joints passing across gymnocyst and below the opesia in outer zooids at bifurcation (zooids C and D); zooids with 5–6 distal spines; scutum slender, slightly flattened, branched twice, covering most of frontal membrane; distolateral avicularia absent; frontal avicularia monomorphic, with elongate base, rostrum directed forwards and covering proximal part of opesia of some zooids.

Description. Colony erect, branches comprising 5–9 zooids. Internodes with alternating zooids, slightly curved; chitinous joints passing across gymnocyst and below opesia in outer zooids at bifurcation (zooids C and D), and across proximal gymnocyst of inner zooids (F and G). Autozooids subcylindrical, tapering proximally. Oval opesia occupying half to three fifths of zooidal length; cryptocyst narrow, deep and smooth, more strongly developed proximally than laterally. Scutum slender, slightly flattened, branched twice, inserted at midline of inner opesial border and covering most of frontal membrane. Distal spines long, unbranched; 3 outer and 2 inner distal, an additional median distal spine sometimes present; proximalmost spines directed slightly forward; axial zooid with 6 regularly spaced spines. Lateral avicularium absent. Frontal avicularia monomorphic, but of variable size, present on surface of third and axial zooid of branch, shape almost aquiline, with raised base, placed on proximal edge of opesia, rostrum directed forward, mandible triangular, hooked distally. Vibracular chamber on basal surface of each zooid, inconspicuous in frontal view; chamber almost trapezoidal, with proximal rhizoid foramen; short setal groove transverse to internode axis, straight, with smooth seta longer than one autozooid. Single axial vibraculum without rhizoidal foramen. Rhizoids tubular, smooth. Ovicells not observed.

Remarks. Cradoscrupocellaria lagaaiji n. sp. is distinguished from the other species described herein by the shape of the frontal avicularium, characterized by a raised base and covering the proximal part of the opesia, and in having a scutum regularly branched twice. This species resembles C. makua n. sp., from Mozambique, in the absence of distolateral avicularia and the overall appearance of zooids, but differs in the shape of the frontal avicularia, scutal size and wider cryptocyst.

Distribution. Mediterranean: South of France.

Figures

FIGURE 15. Cradoscrupocellaria lagaaiji n. sp. A–F, NHMUK 1975.7.18.31, holotype, France, Mediterranean. A, Frontal surface of colony. B, Frontal surface of branch bifurcation; note the gigantic frontal avicularium on the axial zooid. C, Close-up of a branch bifurcation; note the absence of a lateral avicularium. D, Close-up of a gigantic frontal avicularium. E, Close-up of a zooid; note the gigantic frontal avicularium and presence of six distal spines. F, Abfrontal surface of branch.