Latrunculia (Latrunculia) bocagei Ridley and Dendy, 1886

Samaai, Toufiek, Gibbons, Mark J. & Kelly, Michelle, 2006, Revision of the genus Latrunculia du Bocage, 1869 Porifera: Demospongiae: Latrunculiidae) with descriptions of new species from New Caledonia and the Northeastern Pacific (, Zootaxa 1127 (1), pp. 1-71 : 14-15

publication ID

https://doi.org/ 10.11646/zootaxa.1127.1.1

publication LSID

lsid:zoobank.org:pub:E3B8BACE-1E5B-4E07-AB94-A4947F966483

DOI

https://doi.org/10.5281/zenodo.5057844

persistent identifier

https://treatment.plazi.org/id/038D1B08-1353-FFB7-FED7-FA7635B5FFF3

treatment provided by

Felipe

scientific name

Latrunculia (Latrunculia) bocagei Ridley and Dendy, 1886
status

 

Latrunculia (Latrunculia) bocagei Ridley and Dendy, 1886 View in CoL

( Figs 1B, 2 View FIGURE 2 , 3A, 4A View FIGURE 4 ; Tables 2 & 3)

Latrunculia bocagei Ridley and Dendy, 1886: 492 View in CoL ; 1887: 238, PL. XLIV FIG. 1, PL. XLV FIGS 8, 8A. L View in CoL . lendenfeldi; Burton, 1932, p. 340

Holotype material. BMNH 1887.5 .2.237, ethanol preserved sample and microscope­slides, Kerguelen Challenger Expedition, depth 18–31 m.

Additional material. Holotype (part of) BMNH 1887.5.2.238, ethanol preserved sample and microscope­slides, Kerguelen Challenger Expedition, depth 18– 31 m. BMNH 1928.2.15.821 labeled Latrunculia lendenfeldi Hentschel, 1914 identified by Burton, HMS Discovery investigation, Stn. 88, Falkland Islands, 54º 00'S; 57º 30'S, wet subsample; depth 96– 127 m. BMNH 1928.2.15.825 labeled Latrunculia lendenfeldi Hentschel, 1914 identified by Burton, HMS Discovery investigation, Stn. WS 243, Falkland Islands, 54º 00'S; 57º 30'S, wet subsample; depth 141– 144 m.

Diagnosis. Massive, semispherical sponge ( Fig. 3A) with numerous volcano­shaped or cylindrical oscules, and mammiform areolate porefields. Ectosome thick, leathery, not separable from underlying choanosome. Colour in life dark brown, in preservative pale yellow. The choanosomal skeleton is a very irregular polygonal­meshed reticulation formed by wispy tracts of smooth styles ( Fig. 4A View FIGURE 4 ), ranging in width from 91–120 µm in thickness, forming meshes that are 200 µm wide. The surface of the ectosome is aligned with an erect layer of anisodiscorhabds. Beneath the anisodiscorhabds in the ectosome is a thick layer of densely interlocking oblique megascleres, approximately 700 µm wide. Styles are smooth, centrally thickened, fusiform and faintly sinuous, 510 (455–547) x 16 (16–18) m, n=20. Anisodiscorhabds ( Fig. 1B), have an expanded spinose manubrium, above which is a closely associated basal whorl of spines. The microsclere shaft is 20 m long and 7 µm wide. The medium whorl is midway, similar in diameter to the subsidiary and apical whorls, and is deeply notched along the rim and divided into four segments each segment possessing a denticulate margins or 7–8 spines. The spines of the apical whorl are slanted slightly upwards ending in a crown­like tuft of blunt terminally spined projections. Anisodiscorhabd length, 66 (57–71) µm, n=20. This species was collected from both the Kerguelen and Falkland Islands in the Southern Hemisphere at a depth of between 18–144 m (after Samaai and Kelly, 2002).

Geographic distribution. ( Fig. 2 View FIGURE 2 ). Kerguelen and Falkland Islands.

Remarks. This species has not been recorded since the first collection from Kerguelen by Ridley and Dendy (1886, 1887). The form of the anisodiscorhabd and the structure of the crown­like tuft are distinguishing features for this species. The crown is formed of blunt terminally spined projections as opposed to spines. Although the median whorl is midway, it is similar in diameter to the subsidiary and apical whorls, which are all more or less perpendicular to the shaft. The anisodiscorhabd is large and has a long slender shaft.

Two of the voucher samples identified by Burton (1932) (BMNH 1928.2.15.821; 1928.2.15.825) as L. lendenfeldi Hentschel (1914) are in fact specimens of L. bocagei , as confirmed by the structure of the apical whorl or crown­like tufts, which are blunt and terminally spined (see Table 2 & 3). Examination of the type species of L. lendenfeldi ( Hentschel 1914) (Holotype ZMB 4812), indicated that this species ( L. lendenfeldi Hentschel ) is not conspecific with either L. bocagei or L. lendenfeldi (Burton) and is clearly a dustbin assemblages. The validity of L. lendenfeldi is also questionable as it is defined as a synonym of L. basilis based on the structure of the anisodiscorhabd, spicule lengths (see Table 3) and locality (see Table 2) of this species.

Kingdom

Animalia

Phylum

Porifera

Class

Demospongiae

Order

Poecilosclerida

Family

Latrunculiidae

Genus

Latrunculia

Loc

Latrunculia (Latrunculia) bocagei Ridley and Dendy, 1886

Samaai, Toufiek, Gibbons, Mark J. & Kelly, Michelle 2006
2006
Loc

Latrunculia bocagei

Burton, M. 1932: 340
Ridley, S. O. & Dendy, A. 1887: 238
Ridley, R. & Dendy, O. 1886: 492
1886
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