Laboulbenia giardii Cépède & F.Picard

Santamaria, Sergi & Pedersen, Jan, 2021, Laboulbeniomycetes (Fungi, Ascomycota) of Denmark, European Journal of Taxonomy 781, pp. 1-425 : 160-161

Laboulbenia giardii Cépède & F.Picard

MB#183129

Fig. 33A–B

Bulletin Scientifique de la France et de la Belgique 42: 258 ( Cépède & Picard 1908, as L. giardi ). –

Type: [Type lost!] “ Sur les tarses de Bradycellus (Dichirotrichus) pubescens Payk. , Carolles (Manche), recueilli par l’abbé Pasquet ”. [ France]

Diagnostic features

Cell V obtriangular, not connected with cell III. Outer appendage consisting of several slender branches, once divided from the basal cell, up to 500 µm long, dark brown towards the lower outer margin ( Fig. 33A–B , arrows). Inner appendage similar to the outer, with a basal cell slightly shorter and narrower than the basal cell of outer appendage, often partially suffused with dark brown following the outer appendage darkening. Solitary antheridia on the lower parts of the inner appendage branches. Perithecial preostiolar spots black and contrasting with the pale amber-brown remainder thallus. [Detailed description: Santamaria 1998]

Distribution and hosts

Specific on Dicheirotrichus (Col. Carabidae ); but also reported on Agonum ( Colla 1925; Huggert 2010) and Platynus ( Bánhegyi 1940) , records that require confirmation. Only known from Europe: Finland, France, Germany, Greece, the Netherlands, Hungary, Italy, Spain, Sweden, Switzerland, United Kingdom, Russia ( Santamaria et al. 1991), Belgium ( De Kesel & Rammeloo 1992), and Slovakia ( Rossi et al. 2010).

Collections examined from Denmark

On Dicheirotrichus gustavii Crotch, 1871 (Col. Carabidae ) DENMARK – Fyn (F) • Sprogø ; 55°20.012′ N, 10°58.263′ E; PG23; 7 Sep. 2013; JP 212; JP det.; ZMUC C-F-122691 . – Sydjylland (SJ) • Rejsby Sluse vest for Rejsby ; 55°13.931′ N, 8°40.488′ E; MG72; 8 Mar. 2020; JP 1648; JP det.; ZMUC C-F-124371 • Rømødaemningen ; 55°8.811′ N, 8°36.691′ E; MG71; 20 Apr. 2000; H. Liljehult 86; JP det.; ZMUC C-F-122561 . – Vestjylland (WJ) • Myrtue ; 55°33.859′ N, 8°17.845′ E; MG55; 31 Mar. 1988; JP Dry0048; JP det.; ZMUC C-F-124114 .

Remarks

First record from Denmark. Its presence in Denmark is not surprising because this species is known from some neighbouring countries.

Figures

Fig. 33. Laboulbenia spp. A–B. L. giardii Cépède & F.Picard. Mature thalli showing dark lower margin of outer appendage (arrows), a diagnostic character. – C–D. L. gyrinicola Speg. C. Mature thallus. D. Perithecial apex with outgrowths in detail. – E–H. L. hyalopoda De Kesel. E–F. Mature thalli. G. Mature thallus accompanied by two young thalli.H. Dark rings (arrows) belonging to the feet of several thalli. Scale bars: A–C, E–G = 50 µm; D, H = 25 µm. Photographs from slides ZMUC C-F-122561 (A–B), ZMUC C-F-123665 (C), ZMUC C-F-123698 (D), ZMUC C-F-122889 (E–F, H), ZMUC C-F-122629 (G).