Chitonomyces italicus Speg.

Santamaria, Sergi & Pedersen, Jan, 2021, Laboulbeniomycetes (Fungi, Ascomycota) of Denmark, European Journal of Taxonomy 781, pp. 1-425 : 103-104

Chitonomyces italicus Speg.

MB#155523

Fig. 21A–B

Anales del Museo Nacional de Historia Natural de Buenos Aires 27: 46 ( Spegazzini 1915b). –

Type: “ Sobre el margen posterior de los élitros del Laccophilus obscurus ?, pescado en los zanjones de los alrededores de Conegliano , Nov, 1913 ”; LPS. [ Italy]

Diagnostic features

Cell IIIa extending into a short and straight to arcuate or sigmoid, ± darkened, sometimes lobate up to 50 µm long outgrowth, which is directed upwards to outwards without exceeding the perithecial apex ( Fig. 21A , arrow). [Detailed descriptions: Sugiyama 1977; Majewski 1994b; Santamaria 2001b, 2003; De Kesel & Werbrouck 2008]

Distribution and hosts

On the legs of Laccophilus (Col. Dytiscidae ) in Europe ( Belarus, Belgium, Germany, Italy – type –, Poland, Spain) and Japan ( Majewski 2008; De Kesel & Haelewaters 2012).

Collections examined from Denmark

On Laccophilus minutus (Linnaeus, 1758) (Col. Dytiscidae )

DENMARK – Bornholm (B) • Raghammer Odde ; 55°1.193′ N, 14°55.777′ E; VA99; 22 Jun. 2018; JP 1146; JP det.; ZMUC C-F-123669 . – Vestjylland (WJ) • Simmelmose ; 55°46.299′ N, 9°3.519′ E; NG08; 2 Jun. 2019; JP 1478; JP det.; ZMUC C-F-124059 .

Remarks

First record from Denmark. The finding of this species in Denmark is not surprising because of its worldwide distribution.

Figures

Fig. 21. A–B. Chitonomyces italicus Speg. A. Detail of cell IIIa and its outgrowth (arrow). B. Mature thallus. – C–D. Chitonomyces melanurus Peyr. C. Mature thallus showing perithecial enlarged lips (*). D. Young thallus with labelled cell IIIa and hooked basal cell of primary appendage (arrow). – E. Chitonomyces paradoxus (Peyr.) Thaxt. Mature thallus showing prominent perithecial lips (*). – F–G. Hydraeomyces halipli (Thaxt.) Thaxt. Mature thalli. Scale bars: 50 µm. Photographs from slides ZMUC C-F-124059 (A–B), ZMUC C-F-124062 (C), ZMUC C-F-123671 (D), ZMUC C-F-123078 (E), ZMUC C-F-122568 (F–G).