Corethromyces stilici Thaxt.

Santamaria, Sergi & Pedersen, Jan, 2021, Laboulbeniomycetes (Fungi, Ascomycota) of Denmark, European Journal of Taxonomy 781, pp. 1-425 : 222-223

Corethromyces stilici Thaxt.

MB#183854

Fig. 47E–F

Proceedings of the American Academy of Arts and Sciences 37: 42 ( Thaxter 1901b). –

Type: [Not designated] [Ind. loc.] “On the abdomen of Stilicus sp. , Interlaken, Switzerland. On Stilicus rufipes Germ. , Berlin Museum, No. 836. Europe”; FH.

Diagnostic features

Cell I small, dark, laterally extending into a ± straight, stout, blackened outgrowth ( Fig. 47E–F , arrows). Perithecial wall consisting of four vertical, spirally arranged rows of cells ( Fig. 47E ). [Detailed descriptions: Thaxter 1908; Majewski 1994b; Santamaria 2003]

Distribution and hosts

On species of Rugilus (= Stilicus ) (Col. Staphylinidae Paederinae ) from Europe: Germany, the Netherlands, Italy, Poland, Spain, Switzerland ( Santamaria et al. 1991), Hungary ( Bánhegyi et al. 1985), Belgium ( De Kesel & Haghebaert 1991), France ( Duverger 1995), Denmark ( Høier 2009), Sweden ( Huggert 2010); America: USA ( Thaxter 1908), Argentina, Chile, Uruguay ( Santamaria et al. 1991); and Asia: Sumatra ( Tavares 1985).

Collections examined from Denmark

On Rugilus rufipes (Germar, 1836) (Col. Staphylinidae Paederinae ) DENMARK – Østjylland (EJ) • Hald Ege ; 56°24.287′ N, 9°20.550′ E; NH25; 19 Oct. 2013; JP 797; JP det.; ZMUC C-F-123292 • Høgdal ; 56°6.449′ N, 9°36.941′ E; NH31; 11 Mar. 2017; JP 353; JP det.; ZMUC C-F-122835 . – Fyn (F) • Gyldenstens inddaemmede Strand; 55°34.447′ N, 10°7.211′ E; NG75; 2 Apr. 2014; JP 685; JP det.; ZMUC C-F-123173 . – Lolland, Falster, Møn (LFM) • Vest for Bandholm; 54°50.303′ N, 11°28.050′ E; PF57; 3 Jan. 2019; JP 1334; JP det.; ZMUC C-F-123873 . – Nordøstjylland (NEJ) • Bønderskoven i Tofte Skov; 56°49.955′ N, 10°14.981′ E; NH79; 8–22 Aug. 2013; I. Aggerholm 933; JP det.; ZMUC C-F-123433 • ibid.; I. Aggerholm 944; JP det.; ZMUC C-F-123448 • Engskoven i Tofte Skov; 56°51.525′ N, 10°15.065′ E; NJ70; 8–22 Aug. 2013; I. Aggerholm 939; JP det.; ZMUC C-F-123441 • Toftgården i Tofte Skov; 56°50.789′ N, 10°12.918′ E; NJ70; 22 Aug.–5 Sep. 2013; I. Aggerholm 947; JP det.; ZMUC C-F-123452 • Vesterskoven i Tofte Skov; 56°50.346′ N, 10°13.361′ E; NJ70; 7 Aug. 2013; JP 317; JP det.; ZMUC C-F-122796 • ibid.; 8–22 Aug. 2013; I. Aggerholm 926; JP det.; ZMUC C-F-123425 . – Nordøstsjaelland (NEZ) • Faergelunden ; 55°50.540′ N, 12°1.735′ E; UB19; 16 Nov. 2013; JP 596; JP det.; ZMUC C-F-123085 • Husum ; 55°42.851′ N, 12°29.061′ E; UB47; 6 Oct. 2018; JP 1201; JP det.; ZMUC C-F-123728 • Indelukket ved Frederiksborg Slot; 55°56.191′ N, 12°17.861′ E; UC30; 12 Apr. 2016; JP 4; JP det.; ZMUC C-F-122474 , C-F-122475 • ibid.; 19 Mar. 2017; JP 669; JP det.; ZMUC C-F-123158 • Klinten ved Selsø; 55°44.158′ N, 11°59.634′ E; PG88; 11 Mar. 2007; JP 518; JP det.; ZMUC C-F-123001 • Naerum ; 55°49.077′ N, 12°32.686′ E; UB48; 1 Dec. 2019; JP 1564; JP det.; ZMUC C-F-124324 • Stampeskov ved Rådvad; 55°48.332′ N, 12°33.138′ E; UB48; 23 Mar. 2017; JP 469; JP det.; ZMUC C-F-122953 • ibid.; 14 Apr. 2013; JP 786; JP det.; ZMUC C-F-123281 • Skodsborg Dam i Jaegersborg Hegn; 55°49.068′ N, 12°33.937′ E; UB48; 18 Nov. 2018; JP 1242; JP det.; ZMUC C-F-123769 • Tokkekøb Hegn ; 55°52.334′ N, 12°22.229′ E; UB39; 12 Apr. 2018; JP 1026; JP det.; ZMUC C-F-123536 . – Nordvestsjaelland (NWZ) • Klinteskov ved Tissø; 55°34.569′ N, 11°18.882′ E; PG46; 24 Oct. 2018; JP 1214; JP det.; ZMUC C-F-123741 • Nordbredden af Skarresø; 55°39.425′ N, 11°22.998′ E; PG47; 1 May 2013; JP 846; JP det.; ZMUC C-F-123341 • Sonnerup Skov ; 55°56.525′ N, 11°33.988′ E; PH60; 1 Apr. 2017; JP 255; JP det.; ZMUC C-F-122735 . – Sydsjaelland (SZ) • Krobaek i Sjolte Skov; 55°10.772′ N, 12°0.863′ E; UB11; 17 Feb. 2019; JP 1379; JP det.; ZMUC C-F-123920 • Østerskov ved Langebaek; 54°59.572′ N, 12°6.715′ E; UA19; 3 Jan. 2019; JP 1297; JP det.; ZMUC C-F-123830 • Storskov syd for Sparresholm; 55°13.234′ N, 11°57.463′ E; PG82; 17 Feb. 2019; JP 1388; JP det.; ZMUC C-F-123931 • Tryggevaelde Å ved Varpelev ; 55°21.055′ N, 12°15.877′ E; UB23; 6 Jan. 2018; JP 1591; JP det.; ZMUC C-F-124352 . – Vestjylland (WJ) • Velling ; 56°3.078′ N, 8°18.596′ E; MH51; 16 Dec. 2018; JP 1260; JP det.; ZMUC C-F-123788 .

Remarks

This species is extremely common in Denmark. Thalli are more frequent on both sides of the abdomen of its hosts, where they show a strongly curved perithecial stalk cell (VI) which forces the perithecia to project laterally ( Fig. 47E ); thalli from legs show a more straight habitus ( Fig. 47F ).

Figures

Fig. 47. Corethromyces spp. – A–B. C. bialowiezensis T.Majewski. Mature thalli, with labelled primary septum (a) and cell III. – C–D. C. henrotii Balazuc ex Balazuc. C. Typical mature thallus showing cell III and shaded preapical region with a dark spot on the perithecial posterior side (arrow). D. Mature thallus of a unusual form having a darkened cell III. – E–F. C. stilici Thaxt. Mature thalli from abdominal tergites (E) or sternites (F), both showing a labelled cell I blackened outgrowth (arrows). Scale bars: 50 µm. Photographs from slides ZMUC C-F-124370 (A–B), ZMUC C-F-124127 (C), ZMUC C-F-124125 (D), ZMUC C-F-122735 (E–F).