Cantharomyces elongatus Haelew. & De Kesel

Santamaria, Sergi & Pedersen, Jan, 2021, Laboulbeniomycetes (Fungi, Ascomycota) of Denmark, European Journal of Taxonomy 781, pp. 1-425 : 313-314

Cantharomyces elongatus Haelew. & De Kesel

MB#800871

Fig. 76A–B

Mycotaxon 123: 468 ( Haelewaters & De Kesel 2013). –

Type: “ The Netherlands, Prov. Gelderland, Rha , 52°02.9ʹN 6°08.5ʹE, on Syntomium aeneum (Müller, 1821) ( Coleoptera, Staphylinidae , Oxytelinae , Euphaniini ), 13 Oct. 2001, leg. O. Vorst, slides Haelewaters 69a (holotype, 2 mature and 4 immature thalli, found on left elytron and abdominal tergites, BR MYCO 173753-26 )”; BR.

Diagnostic features

Cell I differs strikingly from cells II, III and basal cell of primary appendage by being paler and narrower. Primary appendage consisting of a large, distally rounded basal cell, mostly occupied by the antheridium, a small suprabasal cell and a simple branch formed by a series of elongate cells, exceeding the perithecial apex about three times the thallial length from foot to perithecial apex.

Distribution and hosts

Only known from the type, on Syntomium (Col. Staphylinidae Oxytelinae ) from the Netherlands.

Collections examined from Denmark

On Syntomium aeneum (Müller, 1821) (Col. Staphylinidae Oxytelinae ) DENMARK – Østjylland (EJ) • Bygholm ; 55°51.951′ N, 9°49.399′ E; NG59; 28 Nov. 1940; Høeg; Dry0108; Høeg det.; ZMUC C-F-124174 • Rugballegård ved Vejle ; 55°43.981′ N, 9°27.852′ E; NG49; 22 Jul. 1895; F. de Tengnagel DrY0106; F. de Tengnagel det.; ZMUC C-F-124172 • Stensballe ; 55°52.256′ N, 9°54.776′ E; NG59; 9 Nov. 1941; Høeg Dry0107; Høeg det.; ZMUC C-F-124173 . – Sydjylland (SJ) • Favrdalen ; 55°15.357′ N, 9°31.211′ E; NG32; 6 Nov. 1931; Johs. Andersen Dry0109; Johs. Andersen det.; ZMUC C-F-124175 .

Remarks

First record from Denmark and the second after the original description. A photo of this species is given here for the first time.

Figures

Fig. 76. Cantharomyces spp. A–B. C. elongatus Haelew. & De Kesel. A. Submature thallus with an undamaged appendage.B. Mature thallus. – C–F. C. italicus Speg.C–D. Typical thalli from the abdomen of the host, showing antheridium (an) and constriction of cell VI (arrow). E–F. Mature thalli from the pronotum of the host. In E, “*” points to cell VI corrugation. Scale bars: 50 µm. Photographs from slides ZMUC C-F-124174 (A), ZMUC C-F-124172 (B), ZMUC C-F-123549 (C–D), ZMUC C-F-124264 (E–F).