Laboulbenia parriaudii Balazuc ex Santam.

Santamaria, Sergi & Pedersen, Jan, 2021, Laboulbeniomycetes (Fungi, Ascomycota) of Denmark, European Journal of Taxonomy 781, pp. 1-425 : 189-190

Laboulbenia parriaudii Balazuc ex Santam.

MB#446188

Fig. 40A–B

Flora Mycologica Iberica 4: 122 ( Santamaria 1998). –

Type: “Balazuc herbarium. Sur Bledius (Blediodes) arenarius (Paykull) , France, Dept. Gironde: Gujan [No.68.14]”; PC.

Laboulbenia parriaudii Balazuc ( Balazuc 1974d: 257) (nom. inval.) [MB#316145]

Diagnostic features

Cell V trapezoidal, similar in size and shape to cell IV, connected with septum III–IV. Outer appendage simple or once branched, with the distal septum of the basal cell darkened and constricted ( Fig. 40A–B , arrows). Inner appendage deteriorating with maturation of the thallus. Basal cell of inner appendage shorter than basal cell of outer appendage. [Detailed description: Santamaria 1998]

Distribution and hosts

Only known on Bledius (Col. Staphylinidae Oxytelinae ) from France and Spain ( Santamaria 1989).

Collections examined from Denmark

On Bledius fergussoni Joy, 1912 (Col. Staphylinidae Oxytelinae ) DENMARK – Bornholm (B) • Dueodde ; 54°59.442′ N, 15°4.510′ E; WA09; 2 Jul. 2007; JP 67; JP det.; ZMUC C-F-122543 . – Lolland, Falster, Møn (LFM) • Busemarke Mose ; 54°57.459′ N, 12°27.054′ E; UA39; 28 Aug. 2019; JP 1508; JP det.; ZMUC C-F-124096 . – Nordøstsjaelland (NEZ) • Hornbaek Strand ; 56°5.602′ N, 12°28.504′ E; UC41; Jun. 1898; F. de Tengnagel Dry0133; M. Hansen det.; ZMUC C-F-124200 .

Remarks

First record from Denmark. Laboulbenia parriaudii is similar to L. pedicellata and L. luxurians . An accurate description of appendages is not yet available because they deteriorate with thalli ageing, and the required immature thalli have not yet been found. Therefore, antheridia are unknown and remain undescribed.

Figures

Fig. 40. Laboulbenia spp. A–B. L. parriaudii Balazuc ex Santam. Mature thalli showing the distal septum of the basal cell darkened and constricted (arrows), a diagnostic character. – C–H. L. pedicellata Thaxt. Mature thalli, except the immature one represented in G showing the septum at the lower side in outer branch thick and dark, with blackened suffusion spreading through the dorsal margin (arrow). C–D. From Bembidion aeneum. E. From Bembidion doris. F. From Bembidion minimum. G–H. From Bembidion mannerheimi. Scale bars: 50 µm. Photographs from slides ZMUC C-F-124096 (A–B), ZMUC C-F-122506 (C–D), ZMUC C-F-122492 (E), ZMUC C-F-123118 (F), ZMUC C-F-123132 (G), ZMUC C-F-123391 (H).