Leucosolenia complicata

• 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 complicata; Arctic
• Online Access: https://doi.org/10.5281/zenodo.11265601; http://treatment.plazi.org/id/039D223DFFA8FFFFFF68FA406245FE46

Leucosolenia complicata (Montagu, 1814) (Figs 3–6; Table 4) Type material: Not known* probably lost. Type locality: British Isles * Devon coast % Montagu 1818). Material studied: Three specimens. Molecular data— three specimens %WS11661* WS11662* WS11663)* external morphology— three specimens %WS11661* WS11662* WS11663) * skeleton organization— one specimen %WS11662)* spicules %SEM)— three specimens %WS11661* WS11662* WS11663)* cytology % TEM)— three specimens %WS11661* WS11662* WS11663) %Supporting Information* Table S1). External morphology: Cormus more or less spherical* bearing multiple* erect* oscular tubes with short* lateral diverticula in basal part % Fig. 3A). Prominent perioscular spicular crown absent % Fig. 3B). Surface minutely hispid. Coloration of living and preserved specimens greyish white % Fig. 3A). Spicules: Diactines % Fig. 4A–C). Two populations: %i) curved lanceolate diactines % Fig. 4A)* mean length 263.7 µm* mean width 9.5 µm % Table 4)* slightly curved* smooth* with lanceolate outer tip* variable in length and %ii) trichoxeas % Fig. 4B)* mean length 127.3 µm* mean width 2.4 µm % Table 4)* thin* straight* narrowing toward outer end* both ends pointed* not lance-shaped. Numerous irregularly distributed spines* number and size of spines decrease toward inner end % Fig. 4C). Triactines % Fig. 4D). Predominantly parasagittal V-shaped %mean angle 125.7°)* with unpaired actines usually longer than paired %mean length: 113.5 µm—unpaired* 94.9 µm—paired) % Table 4)* but equal and shorter unpaired actines also occur. Unpaired actines usually slightly slender than paired %mean width: 6.3 µm—unpaired* 6.8 µm—paired) % Table 4). T-shaped sagittal triactines absent. Tetractines % Fig. 4E). Predominantly parasagittal V-shaped %mean angle 123.5°). Unpaired actines usually longer than paired* rarely equal %mean length: 109.3 µm—unpaired* 93.9 µm—paired* 23.8 µm—apical) % Table 4). Paired and unpaired actines equal in width* apical actine more slender %mean width: 6.7 µm—unpaired* 6.9 µm—paired* 5.3 ...