Distolomyces forficulae (T.Majewski) I.I.Tav.

Santamaria, Sergi & Pedersen, Jan, 2021, Laboulbeniomycetes (Fungi, Ascomycota) of Denmark, European Journal of Taxonomy 781, pp. 1-425 : 238

Distolomyces forficulae (T.Majewski) I.I.Tav.

MB#105280

Fig. 52H–I

Mycologia Memoirs 9: 207 ( Tavares 1985). – Basionym: HesperomYces forficulae T.Majewski, Acta Mycologica 10(2): 270 ( Majewski 1974) [MB#315184]. –

Type: “ On Forficula auricularia L. ( Dermaptera , Forficulidae ): Warszawa–Marymont , in a small garden near the Vistula, 6.8.1973 leg. T.Majewski ( TM. 1334 – holotype)”; KRAM. [ Poland]

Diagnostic features

Receptacle with two dark spots, one on cell III and the other between cells I and II. Cell III flattened, bulging outwards. Appendage slanted between the basal and 2 nd cells; consisting of three superposed cells, the humped, dark, as well as elongate basal cell, and the almost hyaline 2 nd cell which is separated with a strongly oblique septum from the terminal flask-shaped and spinose antheridium. Perithecial apex bearing two ligula-like, strongly divergent, geniculate outgrowths. [Detailed descriptions: Majewski 1994b; Santamaria 2003; De Kesel & Gerstmans 2012]

Distribution and hosts

Only known on Forficula auricularia ( Dermaptera , Forficulidae ), typically growing on antennae. Reported from Poland, Spain, Portugal, Italy ( Majewski 2008), Belgium and the Netherlands ( De Kesel & Gerstmans 2012).

Collections examined from Denmark

On Forficula auricularia Linnaeus, 1758 ( Dermaptera Forficulidae ) DENMARK – Lolland, Falster, Møn (LFM) • Møns Klint , Syd; 54°56.985′ N, 12°32.270′ E; UA49; 3 Aug. 2019; JP 1490; JP det.; ZMUC C-F-124076 . – Nordvestsjaelland (NWZ) • Eriksminde syd for Korshage ; 55°57.744′ N, 11°46.504′ E; PH70; 27 Oct. 2019; JP 1534; JP det.; ZMUC C-F-124293 . – Sydsjaelland (SZ) • Gammel Kalvehave ; 54°59.745′ N, 12°8.232′ E; UA19; 3 Aug. 2019; JP 1491; JP det.; ZMUC C-F-124077 .

Remarks

First record from Denmark. Probably overlooked, it may be a less rare species than can be deduced from the paucity or low amount of records.

Figures

Fig. 52. A–B. Diphymyces niger (T.Majewski) I.I.Tav. Mature thalli. Some cells are labelled in B, as I, II, III and VI, as well as the stout, tooth-like prominence, on the perithecial tip (arrow). – C–G. Dipodomyces phloeocharidis T.Majewski.C. Mature thallus showing cells I, II, III, the primary septum (a), and the main axis of the primary appendage consisting of three superposed cells (*). D. Mature thallus. E. Reduced male thallus with apparently two functional antheridia. F–G. Immature thalli showing the original spore apex as a spinous process (sx) and trichogyne (tr). – H–I. DistolomYces forficulae (T.Majewski) I.I.Tav. Mature thalli. Scale bars: A–D, F–H = 50 µm; E, I = 25 µm. Photographs from slides ZMUC C-F-123826 (A), ZMUC C-F-124075 (B), ZMUC C-F-122514 (C–G), ZMUC C-F-124076 (H–I).