Monoicomyces myllaenae Santam.

Santamaria, Sergi & Pedersen, Jan, 2021, Laboulbeniomycetes (Fungi, Ascomycota) of Denmark, European Journal of Taxonomy 781, pp. 1-425 : 351-352

Monoicomyces myllaenae Santam.

MB#521398

Fig. 89D–E

Nova Hedwigia 82 (3–4): 358 ( Santamaria 2006). –

Type: “ SPAIN. Asturias: Parque Nacional de Somiedo, Pigüeces , on the abdominal apex of Myllaena elongata Matthews ( Coleoptera, Staphylinidae , Aleocharinae ), 22 June 2000, S. Santamaria, …. HOLOTYPE: slide BCB–SS2329c ”; BCB.

Diagnostic features

Primary appendage unbranched, with darkened lower and dorsal margins. Cell III with a darkened outer margin. Antheridium with 1 st and 2 nd tiers of cells elongate and forming more than half of its total length. Each antheridium including four phialides. Perithecial stalk cell very elongated, up to three times the perithecial length.

Distribution and hosts

Only known from Spain (type) and the Netherlands (Haelewaters et al. 2014), exclusively on Myllaena elongata (Col. Staphylinidae ).

Collections examined from Denmark

On Myllaena elongata (Matthews, 1838) (Col. Staphylinidae Aleocharinae ) DENMARK – Sydjylland (SJ) • Nordborg Praestegårdshave ; 55°3.646′ N, 9°44.362′ E; NG40; 12 Aug. 1936; Johs. Andersen Dry0148; Johs. Andersen det.; ZMUC C-F-124215 .

Remarks

First record from Denmark. The Danish material is in very poor condition although identifiable ( Fig. 89E ). A photograph of the type is added for comparison ( Fig. 89D ).

Figures

Fig. 89. Monoicomyces spp. A–C. M. matthiatis T.Majewski. A. Mature thallus. B. Lower receptacle (I, II, and III) and antheridium (tiers of cells labelled with t1–3) in detail. C. Central area of a thallus in detail showing cell III, the primary septum (a), and the darkened, oblique septum separating the basal inflated cell from the elongated apical cell of the primary appendage (arrow). – D–E. M. myllaenae Santam. D. Mature thallus from Spanish type slide kept in BCB. E. Broken and damaged thallus from Denmark. – F–G. M. nigrescens Thaxt. F. Primary appendage in detail showing cell III at the base. G. Immature thallus. Scale bars: A, D–E, G = 50 µm; B–C = 20 µm; F = 25 µm. Photographs from slides ZMUC C-F-123613 (A–C), BCB-SS2329c (D) (holotype), ZMUC C-F-124215 (E), ZMUC C-F-124217 (F–G).