Corethromyces bialowiezensis T.Majewski

Santamaria, Sergi & Pedersen, Jan, 2021, Laboulbeniomycetes (Fungi, Ascomycota) of Denmark, European Journal of Taxonomy 781, pp. 1-425 : 219

Corethromyces bialowiezensis T.Majewski

MB#459689

Fig. 47A–B

Acta Mycologica 34 (1): 9 ( Majewski 1999). –

Type: “ On Tachyporus solutus Erichson (Col., Staphylinidae , Tachyporinae ): Bialowieza, meadow near forest ( Bialowieza National Park sect. 399), 14.5.1987 ( TM. 3713 – HOLOTYPE)”; KRAM. [ Poland]

Diagnostic features

Cell I elongate, entirely pale except for the lower part and the darkened foot. Basal cell of primary appendage darkened, distally rounded, supporting a few-celled axis bearing lateral, slender phialides.

Distribution and hosts

Only known from the type locality in Poland, on Tachyporus (Col. Staphylinidae Tachyporinae ).

Collections examined from Denmark

On Tachyporus chrysomelinus (Linnaeus, 1758) (Col. Staphylinidae Tachyporinae ) DENMARK – Sydjylland (SJ) • Juvre ; 55°11.050′ N, 8°33.568′ E; MG71; 8 Mar. 2020; JP 1642; JP det.; ZMUC C-F-124370 .

Remarks

First record from Denmark and second after the original description. There is no doubt that Tachyporus chrysomelinus is very common and widespread in Denmark and often occurs in large numbers when found. Nevertheless, C. bialowiezensis probably is a very rare species although the absence of citations may also be due to a lack of research. A photo of this species is given here for the first time.

Figures

Fig. 47. Corethromyces spp. – A–B. C. bialowiezensis T.Majewski. Mature thalli, with labelled primary septum (a) and cell III. – C–D. C. henrotii Balazuc ex Balazuc. C. Typical mature thallus showing cell III and shaded preapical region with a dark spot on the perithecial posterior side (arrow). D. Mature thallus of a unusual form having a darkened cell III. – E–F. C. stilici Thaxt. Mature thalli from abdominal tergites (E) or sternites (F), both showing a labelled cell I blackened outgrowth (arrows). Scale bars: 50 µm. Photographs from slides ZMUC C-F-124370 (A–B), ZMUC C-F-124127 (C), ZMUC C-F-124125 (D), ZMUC C-F-122735 (E–F).