Stigmatomyces limosinae Thaxt.

Santamaria, Sergi & Pedersen, Jan, 2021, Laboulbeniomycetes (Fungi, Ascomycota) of Denmark, European Journal of Taxonomy 781, pp. 1-425 : 263-264

Stigmatomyces limosinae Thaxt.

MB#189647

Fig. 60A

Proceedings of the American Academy of Arts and Sciences 36: 406 ( Thaxter 1901a). – Type: [Not designated] [Ind. loc.] “On Limosina fontinalis Fallen. Kittery Point , Maine, vicinity of Cambridge, Mass., Berkeley, California ”; FH. [ USA]

Stigmatomyces pedunculatus T.Majewski ( Majewski 1972b: 231) [MB#324131]

Diagnostic features

Basal cell of appendage dark, supporting a series of up to 12 flattened, oblique, outwardly bulging cells, each bearing elongated antheridia on the inner side, except the upper cell which gives rise to an additional antheridium. Perithecium with an oval venter, and a well-distinguished, elongated neck (about two times the length of the venter) which tapers distally into a distinct, slightly asymmetrical, pointed tip, showing four small lips. Perithecial stalk cell (VI), secondary stalk cell (VII) and basal cells (m, n, n’) forming a well distinguished peduncle [Detailed descriptions: Thaxter 1908; Majewski 1994b; Weir & Rossi 1995; De Kesel & Hanssens 2007]

Distribution and hosts

Described on Limosina , found also on Leptocera , Rachispoda , and Spelobia ( Diptera Sphaeroceridae ). Reported from USA, Mexico, Jamaica, New Zealand and Europe ( Italy, Portugal, Poland, United Kingdom) ( Majewski 2008; the record from Spain is a mistake). Also from Belgium ( De Kesel & Hanssens 2007), Czech Republic ( Rossi et al. 2010), the Netherlands ( Haelewaters et al. 2012), Kenia, Sierra Leone, and Canada ( Rossi & Leonardi 2018).

Collections examined from Denmark

On Spelobia palmata (Richards, 1927) / talparum (Richards, 1927) ( Diptera Sphaeroceridae ) DENMARK – Nordøstsjaelland (NEZ) • Indelukket ved Frederiksborg Slot ; 55°56.191′ N, 12°17.861′ E; UC30; 19 Mar. 2017; JP 1194; W. Gritsch det.; ZMUC C-F-123718 .

Remarks

First record from Denmark. This species is particularly similar to S. crassicollis from which it may be separated by the long-stalked perithecium.

Figures

Fig. 60. Stigmatomyces spp. A. S. limosinae Thaxt. Mature thallus. – B–E. S. majewskii H.L.Dainat, Manier & Balazuc. B–C. Mature thalli. D. Primary appendage in detail with labelled spinous process from the original spore apex (sx). E. Perithecial tip in detail. – F–H. S. platensis Speg. Mature thalli showing protrusion of cell VII (arrows). Scale bars: A–C, E–H = 50 µm; D = 25 µm. Photographs from slides ZMUC C-F-123718 (A), ZMUC C-F-123705 (B, D–E), ZMUC C-F-123731 (C), ZMUC C-F- 123713 (F–H).