Laboulbenia stilicicola Speg.

Santamaria, Sergi & Pedersen, Jan, 2021, Laboulbeniomycetes (Fungi, Ascomycota) of Denmark, European Journal of Taxonomy 781, pp. 1-425 : 206-208

Laboulbenia stilicicola Speg.

MB#242534

Fig. 44F–G

Redia 10: 41 ( Spegazzini 1914). –

Type: “Abbondante sulle elitre di Stilicus fragilis raccolto a Lévico , G. Doria, X, 1884 (Coll. Mus. Civ. Genova, n. 71)”; LPS. [ Italy]

Laboulbenia atroseptata T.Majewski ( Majewski 1990a: 45) [MB#128601]

Diagnostic features

Cell V obtriangular, minute, half or less of the length of cell IV, not connected with cell III. Outer appendage unbranched, with the lower cells flattened, darkened, inflated, and separated with moderately thick, dark and constricted septa. Inner appendage consisting of a simple or once divided branch terminated by solitary or paired antheridia. Basal cell of inner appendage half as long and narrower than basal cell of outer appendage. [Detailed descriptions: Majewski 1994b; Santamaria 1998]

Distribution and hosts

On Rugilus (= Stilicus Berthold, 1827 ) (Col. Staphylinidae Paederinae ) from Europe: Finland, France, Italy, the Netherlands, Poland, Spain, Switzerland, United Kingdom ( Santamaria et al. 1991), Belgium ( De Kesel & Haghebaert 1991), Greece ( Castaldo et al. 2004), and Sweden ( Huggert 2010); and from USA ( Balazuc 1974e).

Collections examined from Denmark

On Rugilus rufipes (Germar, 1836) (Col. Staphylinidae Paederinae ) DENMARK – Nordøstsjaelland (NEZ) • Husum ; 55°42.851′ N, 12°29.061′ E; UB47; 6 Oct. 2018; JP 1201; JP det.; ZMUC C-F-123727 . – Nordvestsjaelland (NWZ) • Klinteskov ved Tissø ; 55°34.569′ N, 11°18.882′ E; PG46; 24 Oct. 2018; JP 1214; JP det.; ZMUC C-F-123740 .

Remarks

First record from Denmark. A rather variable species by thallial length and perithecium width/length ratio, resulting in a slenderer to somewhat stocky species. In Fig. 44G (tr) a very elongate and branched trichogyne is illustrated.

Figures

Fig. 44. Laboulbenia spp. A–E. L. stenolophi Speg. Mature thalli except fig. D which represents a detail of the inner appendage. A and C show the perithecial ventral prominence formed by the junction of outer wall cell tiers w1 and w2 (arrows). B. Cell IV subdivision is shown (arrow). A–B. From Stenolophus mixtus. C. From Stenolophus teutonus. D–E. From Acupalpus flavicollis. – F–G. L. stilicicola Speg. F. Mature thallus. G. Upper part of an immature thallus showing an elongate trichogyne (tr). – H–I. L. thaxteri Cépède & F.Picard. Mature thalli. Scale bars: A–C, E–I = 50 µm; D = 25 µm. Photographs from slides ZMUC C-F-122606 (A), ZMUC C-F-123150 (B), ZMUC C-F-122707 (C), ZMUC C-F-122974 (D–E), ZMUC C-F-123727 (F–G), ZMUC C-F-123102 (H–I).