Euphoriomyces unilateralis T.Majewski

Santamaria, Sergi & Pedersen, Jan, 2021, Laboulbeniomycetes (Fungi, Ascomycota) of Denmark, European Journal of Taxonomy 781, pp. 1-425 : 64

Euphoriomyces unilateralis T.Majewski

MB#459691

Fig. 11A–B

Acta Mycologica 34: 13 ( Majewski 1999). –

Type: “ On Agathidium atrum (Paykull) (Col. Leiodidae ): Bialowieza Forest , sect. 638D, Circaeo-Alnetum, in litter, 24.7.1997, leg. T. Majewski ( TM 7734 , - holotype-)”; KRAM. [ Poland]

Diagnostic features

All the cells of receptacle (except the lower 4–7) divide unilaterally to form single sterile cells and perithecia. Antheridia borne distally on short branches of the appendage which continues the receptacle axis. [Detailed description: Santamaria 2003]

Distribution and hosts

On Agathidium (Col. Leiodidae ) from Poland (type) and Spain ( Santamaria 2001a).

Collections examined from Denmark

On Agathidium atrum (Paykull, 1798) (Col. Leiodidae )

DENMARK – Nordøstsjaelland (NEZ) • Naerum ; 55°49.077′ N, 12°32.686′ E; UB48; 1 Dec. 2019; JP 1567; JP det.; ZMUC C-F-124327 .

On Agathidium seminulum (Linnaeus, 1758) (Col. Leiodidae )

DENMARK – Nordøstsjaelland (NEZ) • Geelskov ; 55°48.269′ N, 12°28.343′ E; UB48; 10 Dec. 2018; M. Kofoed-Hansen 1270; M. Kofoed-Hansen det.; ZMUC C-F-123798 .

Remarks

First record from Denmark. In our opinion, E. unilateralis is a good species, well recognizable and distinguished from the similar E. agathidii by the narrow receptacle and by the absence of appendages and perithecia on one side.

Figures

Fig. 11. A–B. Euphoriomyces unilateralis T.Majewski.A. Paired thalli. B. Thallus with two perithecia, the lower immature, the upper overmature. – C. Phaulomyces euaestheti (Thaxt.) I.I.Tav., mature thallus with two perithecia and with the probable cell III labelled (III?). – D–E. Phaulomyces octotemni (T.Majewski) I.I.Tav. D. Paired thalli. E. Five thalli with a labelled antheridium (an) on the right immature thallus. Scale bars: A–B = 20 µm; C–E = 50 µm. Photographs from slides ZMUC C-F-123798 (A–B), ZMUC C-F-122484 (C), ZMUC C-F-124330 (D), ZMUC C-F-124329 (E).