Clathrina delicata, Fontana & Cóndor-Luján & Azevedo & Pérez & Klautau, 2018

Fontana, Tayara, Cóndor-Luján, Báslavi, Azevedo, Fernanda, Pérez, Thierry & Klautau, Michelle, 2018, Diversity and distribution patterns of Calcareous sponges (subclass Calcinea) from Martinique, Zootaxa 4410 (2), pp. 331-369 : 346-348

publication ID

https://doi.org/10.11646/zootaxa.4410.2.5

publication LSID

lsid:zoobank.org:pub:03410832-3508-4DE7-A4CF-D0D458E0069A

DOI

https://doi.org/10.5281/zenodo.5966587

persistent identifier

https://treatment.plazi.org/id/225F2A0C-FFAC-FFDD-0BFD-2BF09798B698

treatment provided by

Plazi

scientific name

Clathrina delicata
status

sp. nov.

Clathrina delicata sp. nov.

( Figure 7 View FIGURE 7 , Table 7)

Diagnosis. Clathrina with triactines of three size classes with cylindrical to slightly conical actines.

Etymology. From the Latin delicata (= slender), for the thin actines of the spicules.

Type Locality. Anse Noire , Anses d'Arlet, Martinique.

Type Material. ( Three specimens) Holotype: UFRJPOR 7841, Anse Noire, Anses d´ Arlet, Martinique, (14°32.024' N – 61°05.278' W), collected by B. Cóndor-Luján, 14 May 2015, 6 m depth GoogleMaps . Paratypes: UFRJPOR 7656, Sud Anse Couleuvre, Martinique (14°50.450' N – 061°13.520' W), collected by F. Azevedo, 23 April 2015 GoogleMaps , 17.9 m depth. UFRJPOR 7666, Le Rocher du Diamant , Martinique (14°26.556' N – 61°2.408' W), collected by F. Azevedo, 25 April 2015 GoogleMaps , 18.8 m depth.

Other Material Examined. (Three specimens) UFRJPOR 7840, Anse Noire, Anses d´Arlet, Martinique (14°32.024' N – 61°05.278' W), collected by B. Cóndor-Luján, 14 May 2015, 11 m depth. UFRJPOR 7668, Le Rocher du Diamant, Martinique (14°26.556' N – 61°2.408' W), collected by F. Azevedo, 25 April 2015, 18.8 m depth. UFRJPOR 7844, Pointe Burgos, Anses d'Arlet, Martinique (14°29.787' N – 61°5.351' W), collected by B. Cóndor-Luján, 14 May 2015, 6 m depth.

Colour. White alive and light yellow in ethanol.

Description. The specimen from Martinique has a clathroid body formed by large, irregular and loosely transparent anastomosed tubes ( Figure 7A–B View FIGURE 7 ). Water collecting-tubes are not present. No cells with granules were found. Aquiferous system asconoid.

Skeleton. The skeleton is disorganised, composed of three categories of triactines ( Figure 7C View FIGURE 7 ).

Spicules ( Table 7).

*From Klautau & Valentine (2003).**From Azevedo et al. (2015).

Triactine I: Regular. Actines are slightly conical with sharp tips ( Figure 7D View FIGURE 7 ). Size: 25.0–65.0/3.7–5.0 µm. Triactine II: Regular. They are very abundant. Actines are cylindrical with sharp tips. They are predominantly straight, but some are slightly undulated ( Figure 7E View FIGURE 7 ). Size: 95.0–167.5/6.2–8.7 µm. Triactine III: Regular. These spicules are rare. Actines are slightly conical with sharp tips ( Figure 7F View FIGURE 7 ). Size: 195.0–250.0/12.5–20.0 µm.

Ecology. Specimens of this species were found inside a cave. One of them was growing on a blue Demospongiae.

Remarks. Until now the species of Clathrina with triactines of three size categories were C. laminoclathrata Carter, 1886 and Clathrina nuroensis Azevedo et al., 2015 . The colour of C. laminoclathrata alive is unknown and as the lectotype was preserved dry it is not possible to be sure about the anastomosis of the tubes. However, it can be differentiated from C. delicata sp. nov. by the shape of the spicules, which are conical in C. laminoclathrata and varies from cylindrical to slightly conical in the new species. Besides, the spicules of the new species are thinner than those of C. laminoclathrata ( Table 7). In C. nuroensis , water-collecting tubes are present, while in C. delicata sp. nov. they are absent. In addition, the Peruvian species presents slightly conical to conical spicules, and the size of the spicules is smaller when compared to the spicules of C. delicata sp. nov. ( Table 7). In the phylogenetic tree ( Figure 17 View FIGURE17 ), C. delicata sp. nov. grouped with C. cylindractina with bootstrap of 90% and presented a p-distance of 3.1%. This distance is considered interspecific, with the smallest interspecific distance to the Clathrina in this tree of 0.3% ( C. blanca vs. C. ramosa ).

Geographical distribution. Anse Noire, Anses d'Arlet, Martinique.

Kingdom

Animalia

Phylum

Porifera

Class

Calcarea

Order

Clathrinida

Family

Clathrinidae

Genus

Clathrina