Laboulbenia cornuta Thaxt.

Santamaria, Sergi & Pedersen, Jan, 2021, Laboulbeniomycetes (Fungi, Ascomycota) of Denmark, European Journal of Taxonomy 781, pp. 1-425 : 139-141

Laboulbenia cornuta Thaxt.

MB#146244

Fig. 28B

Proceedings of the American Academy of Arts and Sciences 30: 476 ( Thaxter 1895). –

Type: “ On Bembidium complanatum Mann. , Washington (Miss Parker)”; FH. [ USA]

Diagnostic features

As L. luxurians but with an oblique flat cell III, a larger cell V and with a ± conspicuous protuberance near the perithecial apex ( Fig. 28B , *). [Detailed descriptions: Thaxter 1896; Majewski 2006]

Distribution and hosts

On the distal portion of elytra of species of Bembidion in the subgenus Notaphus (Col. Carabidae ). Described from USA, also reported from Cuba, Hungary, Spain and Poland ( Majewski 2008).

Collections examined from Denmark

On Bembidion varium (Olivier, 1795) (Col. Carabidae )

DENMARK – Lolland, Falster, Møn (LFM) • Krenkerup Haveskov ; 54°46.408′ N, 11°39.955′ E; PF77; 29 Nov. 2014; JP 457; JP det.; ZMUC C-F-122942 • Ulvshale ; 55°2.270′ N, 12°15.392′ E; UB20; 6 Jun. 2018; JP 1121; JP det.; ZMUC C-F-123643 .

Remarks

First record from Denmark. Although the host is very common and widespread in Denmark, this is an uncommon species, and scarce when found, with only one or two thalli on each host.

Figures

Fig. 28. Laboulbenia spp. A. L. coneglianensis Speg. Three mature thalli. – B. L. cornuta Thaxt. Mature thallus with labelled perithecial protuberance (*). – C. L. corylophi Scheloske. Mature thallus. Scale bars: 50 µm. Photographs from slides ZMUC C-F-123599 (A), ZMUC C-F-123643 (B), ZMUC C-F- 122476 (C).