Stigmatomyces ephydrae L.Mercier & R.Poiss.

Santamaria, Sergi & Pedersen, Jan, 2021, Laboulbeniomycetes (Fungi, Ascomycota) of Denmark, European Journal of Taxonomy 781, pp. 1-425 : 260-261

Stigmatomyces ephydrae L.Mercier & R.Poiss.

MB#531320

Fig. 58D–F

Bulletin de la Société Zoologique de France 52: 226 ( Mercier & Poisson 1927). –

Type: [Type lost?!] “Au cours de l’été dernier, chassant les Diptères dans les marais de Colleville-sur-Orne, en bordure de la côte du Calvados, nous avons capturé de nombreux exemplaires d’ Ephydra riparia Fall., Diptère extrêmement commun …”. [ Mercier & Poisson 1927: 227, fig. 1] [ France]

Stigmatomyces bottnicus Huldén ( Huldén 1983: 64) [MB#108563]

Stigmatomyces setacerae Huldén ( Huldén 1983: 68) [MB#108569]

Diagnostic features

Basal cell of appendage dark, slightly elongate, supporting a series of four superposed cells, each bearing one antheridium on the inner side, except for the upper cell which gives rise two antheridia, where the distal one bears a dorsal spinous process ( Fig. 58D , sx). Perithecium with four rounded distal swellings and an abruptly distinguished, narrow, bent neck. [Detailed description: Thaxter 1931; Weir & Rossi 1995]

Distribution and hosts

Occurs on Diptera Ephydridae of the genera Ephydra Fallén, 1810 , Setacera Cresson, 1930 and probably Glenanthe Haliday, 1839 ( Rossi et al. 2013). Reported from France (type), Russia, Finland ( Huldén 1983), Italy ( Rossi 1993), United Kingdom ( Weir & Rossi 1995), New Zealand ( Hughes et al. 2004), Brazil ( Bergonzo et al. 2004), China ( Shen & Ye 2006), Canada, Kyrgyzstan, USA, and Portugal ( Rossi et al. 2013).

Collections examined from Denmark

On Ephydra riparia Fallén, 1813 ( Diptera Ephydridae ) DENMARK – Nordøstsjaelland (NEZ) • Jersie Strand ; 55°30.992′ N, 12°13.142′ E; UB25; 31 Aug. 2019; JP 1510; V. Michelsen det.; ZMUC C-F-124262 .

Remarks

First record from Denmark. Its presence in Denmark is not surprising according to its records in neighbouring countries.

Figures

Fig. 58. Stigmatomyces spp. A–C. S. entomophilus (Peck) Thaxt. A–B. Mature thalli. C. Primary appendage in detail showing spinous process from the original spore apex (sx). – D–F. S. ephydrae L.Mercier & R.Poiss. D. Primary appendage in detail showing spinous process from the original spore apex (sx). E–F. Mature thalli. Scale bars: 50 µm. Photographs from slides ZMUC C-F-124020 (A–C), ZMUC C-F-124262 (D–F).