Leucosolenia creepae Lavrov, Ekimova, Schepetov, Koinova & Ereskovsky, 2024, sp.nov.

• Main Authors: Lavrov, Andrey, Ekimova, Irina, Schepetov, Dimitry, Koinova, Alexandra, Ereskovsky, Alexander
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2023
• Subjects: Biodiversity; Taxonomy; Animalia; Porifera; Calcarea; Leucosolenida; Leucosoleniidae; Leucosolenia; Leucosolenia creepae; Arctic; White Sea
• Online Access: https://doi.org/10.5281/zenodo.11248959; http://treatment.plazi.org/id/039D223DFFB9FFECFC58FA2066C5FE67

Leucosolenia creepae sp.nov. (Figs 19–22; Table 8) ZooBank LSID: urn:lsid:zoobank.org:act: D60461BE-F215- 4BE2-AFB5-25AF542FC4B9. Type material: Holotype : WS11702* White Sea* Kandalaksha Bay * Velikaya Salma Strait* vicinity of the N.A. Pertsov White Sea Biological Station* 0–2 m depth * 28.viii.2018 * coll. A.I. Lavrov. Paratypes: WS11703* 1 specimen * White Sea* Kandalaksha Bay * Velikaya Salma Strait* vicinity of the N.A. Pertsov White Sea Biological Station* 0–2 m depth * 28.viii.2018 * coll. A.I. Lavrov. WS11728 paratype agrees in locality* date and collector with holotype WS11702 and paratype WS11703. WS11655 was collected in 30.viii.2017 * and WS11725* WS11726* WS11771 were collected in 24.viii.2018 * but all agree in locality and collector with holotype WS11702 and paratype WS11703. Type locality: White Sea* Kandalaksha Bay* Velikaya Salma Strait* vicinity of the N.A. Pertsov White Sea Biological Station %66°34ʹN* 33°08ʹE). Material studied: Fifty-four specimens. Molecular data— 54 specimens * external morphology— 54 specimens * skeleton organization— three specimens %WS11655* WS11728* WS11762)* spicules %SEM)— five specimens %WS11579* WS11605* WS11704* WS11729* WS11775)* cytology % TEM)— three specimens %WS11579* WS11600* WS11698) %Supporting Information* Table S1). Etymology: From English ‘creep’* referring to specific decumbent cormus and unusual growth form of this species in contrast to sympatrically living Leucosolenia corallorrhiza. External morphology: Length of cormus up to 5 cm. Cormus formed by basal reticulations of creepy tubes with one or several oscular tubes % Fig. 19A). Tubes brittle. Oscular tubes creepy* trailing over substrate with slightly curved and erecteddistal end* sometimes with few diverticula. Oscular rim gradually narrows* possessing prominent spicular crown % Figure 19A * B). Surface echinate. Coloration of living and preserved specimens greyish white % Fig. 19A). Spicules: Diactines % Fig. 20A * B). Spiny diactines* mean length 194.9 µm* mean width 5.1 µm % Table 8). ...