Rhachomyces furcatus (Thaxt.) Thaxt.

Santamaria, Sergi & Pedersen, Jan, 2021, Laboulbeniomycetes (Fungi, Ascomycota) of Denmark, European Journal of Taxonomy 781, pp. 1-425 : 86-89

publication ID

https://doi.org/ 10.5852/ejt.2021.781.1583

DOI

https://doi.org/10.5281/zenodo.5829526

persistent identifier

https://treatment.plazi.org/id/03D3878A-B704-FFBC-6767-7B73D91AFBA9

treatment provided by

Felipe (2022-01-07 19:25:30, last updated 2024-12-04 20:55:27)

scientific name

Rhachomyces furcatus (Thaxt.) Thaxt.
status

 

Rhachomyces furcatus (Thaxt.) Thaxt. View in CoL

MB#186405

Figs 17C–D View Fig , 102A View Fig

Proceedings of the American Academy of Arts and Sciences 30: 467 ( Thaxter 1895). – Basionym: Acanthomyces furcatus Thaxt., Proceedings View in CoL of the American Academy of Arts and Sciences 28: 177 ( Thaxter 1893) [MB#581133]. –

Type: “ On abdomen of Othius fulvipennis Fab. , Germany ”; FH.

Diagnostic features

Thallus variably bent to flexuous. Main receptacle axis continuing into a rather conspicuous lateral branch above the perithecium, even exceeding in length its apex.Appendages type “a” and “b” inseparable, long and very abundant, deeply darkened. Appendages of type “c” consisting of a supporting cell and one antheridium, only visible on the upper lateral branch in mature thalli ( Fig. 17D View Fig , *). [Detailed descriptions: Thaxter 1896; Santamaria 1989; Majewski 1994b; De Kesel 2002]

Distribution and hosts

Occurs on species belonging to the genus Othius (Col. Staphylinidae Staphylininae ). Known from Europe ( Finland, France, Germany, Hungary, Italy, Poland, Romania, Spain, Sweden, United Kingdom, Russia, former Yugoslavia), Africa ( Algeria, Uganda), and Asia ( Turkey) ( Santamaria et al. 1991). More recently it has been recorded from Belgium ( De Kesel & Haghebaert 1991), Czech Republic ( Rossi & Máca 2006), Denmark ( Rostrup 1935), Slovakia ( Rossi et al. 2010), the Netherlands ( Haelewaters et al. 2012), Armenia, Switzerland, and Bulgaria ( Rossi et al. 2019a).

Collections examined from Denmark

On Othius angustus Stephens, 1833 (Col. Staphylinidae Staphylininae )

DENMARK – Nordøstsjaelland (NEZ) • Lille Lyngby Mose ; 55°40.831′ N, 12°29.094′ E; UC20; 28 Jan. 2018; J. Søgaard Hansen 999; J. Søgaard Hansen det.; ZMUC C-F-123506 GoogleMaps .

On Othius punctulatus (Goeze, 1777) (Col. Staphylinidae Staphylininae )

DENMARK – Østjylland (EJ) • Hald Ege ; 56°24.287′ N, 9°20.550′ E; NH25; 19 Oct. 2013; JP 795; JP det.; ZMUC C-F-123290 GoogleMaps Hestehave ved Rønde ; 56°17.015′ N, 10°28.162′ E; NH93; 19 May 1994; N. Scharff 391; JP det.; ZMUC C-F-122874 GoogleMaps Kjellerup ; 56°17.589′ N, 9°26.117′ E; NH23; 21 Oct. 2017; JP 580; JP det.; ZMUC C-F-123066 GoogleMaps Stidsmølle i Mattrup Skov ; 55°55.455′ N, 9°33.811′ E; NG39; 19 Nov. 2017; JP 807; JP det.; ZMUC C-F-123302 GoogleMaps . – Lolland, Falster, Møn (LFM) • Nyord ; 55°2.885′ N, 12°12.380′ E; UB20; 27 Apr. 2013; JP 841; JP det.; ZMUC C-F-123336 GoogleMaps Siesø i Klinteskoven ; 54°57.830′ N, 12°32.494′ E; UA49; 15 May 2017; Mo. Hansen DrY0146; Mo. Hansen det.; ZMUC C-F-124214 GoogleMaps . – Nordøstsjaelland (NEZ) • Gribskov, Faendriksvang ; 56°1.005′ N, 12°21.245′ E; UC30; 1–31 May 2014; J. Heilmann-Clausen et al. 49; P. Jørum det.; ZMUC C-F-122524 GoogleMaps ibid.; J. Heilmann-Clausen et al. 163; P. Jørum; ZMUC C-F-122642 GoogleMaps ibid.; 1–30 Jun. 2014; J. Heilmann-Clausen et al. 50; P. Jørum; ZMUC C-F-122525 GoogleMaps Gribskov, Kageruphus ; 55°59.428′ N, 12°16.478′ E; UC30; 1–31 May 2014; J. Heilmann-Clausen et al. 47; P. Jørum det.; ZMUC C-F-122522 GoogleMaps ibid.; 55°59.358′ N, 12°16.566′ E; UC30; 1–31 May 2014; J. Heilmann-Clausen et al. 164; P. Jørum det.; ZMUC C-F-122643 GoogleMaps Gribskov, Kalvehave ; 56°0.359′ N, 12°20.339′ E; UC30; 1–31 May 2014; J. Heilmann-Clausen et al. 48; P. Jørum det.; ZMUC C-F-122523 GoogleMaps ibid.; J. Heilmann-Clausen et al. 165; P. Jørum det.; ZMUC C-F-122644 GoogleMaps ibid.; 56°0.419′ N, 12°20.564′ E; UC30; 1–31 May 2014; J. Heilmann-Clausen et al. 166; P. Jørum det.; ZMUC C-F-122645 GoogleMaps Gribskov, Kistrupvang ; 56°1.612′ N, 12°19.959′ E; UC31; 1–31 May 2014; J. Heilmann-Clausen et al. 167; P. Jørum; ZMUC C-F-122646 GoogleMaps ibid.; 56°1.602′ N, 12°20.048′ E; UC31; 1–31 May 2014; J. Heilmann-Clausen et al. 168; P. Jørum det.; ZMUC C-F-122647 GoogleMaps Gribskov, Nederste Koppel ; 56°2.865′ N, 12°19.999′ E; UC31; 1–31 May 2014; J. Heilmann-Clausen et al. 46; P. Jørum det.; ZMUC C-F-122521 GoogleMaps Naerum ; 55°49.077′ N, 12°32.686′ E; UB48; 29 Apr. 2017; JP 402; JP det.; ZMUC C-F-122885 GoogleMaps Stampeskov ved Rådvad ; 55°48.332′ N, 12°33.138′ E; UB48; 14 Apr. 2013; JP 783; JP det.; ZMUC C-F-123278 GoogleMaps . – Nordvestsjaelland (NWZ) • Eriksminde syd for Korshage ; 55°57.744′ N, 11°46.504′ E GoogleMaps ; PH70; 27 Oct. 2019; JP 1537; JP det.; ZMUC C-F-124297 . – Sydjylland (SJ) • Draved Skov ; 55°0.964′ N, 8°58.395′ E; MF99; 1 Jun. 2013; JP 305; JP det.; ZMUC C-F-122784 GoogleMaps Kollund Skov ; 54°50.219′ N, 9°25.411′ E; NF27; 8 May 2004; H. Liljehult 79; H. Liljehult det.; ZMUC C-F-122554 . – GoogleMaps Sydsjaelland (SZ) • Sorø, Kristiansminde ; 55°25.115′ N, 11°35.209′ E; PG64; 1–15 Aug. 2013; JP 525; JP det.; ZMUC C-F-123009 GoogleMaps .

On Othius subuliformis Stephens, 1833 (Col. Staphylinidae Staphylininae )

DENMARK – Østjylland (EJ) • Grejsdal syd for Hornstrup ; 55°44.791′ N, 9°33.051′ E; NG37; 8 Mar. 2014; JP 749; JP det.; ZMUC C-F-123243 GoogleMaps Hald Ege ; 56°24.287′ N, 9°20.550′ E; NH25; 19 Oct. 2013; JP 796; JP det.; ZMUC C-F-123291 GoogleMaps Hampen Sø ; 56°1.082′ N, 9°23.149′ E; NH20; 21 Mar. 2014; JP 438; JP det.; ZMUC C-F-122923 GoogleMaps Kjellerup ; 56°17.589′ N, 9°26.117′ E; NH23; 21 Oct. 2017; JP 581; JP det.; ZMUC C-F-123067 GoogleMaps Stidsmølle i Mattrup Skov ; 55°55.455′ N, 9°33.811′ E; NG39; 19 Nov. 2017; JP 808; JP det.; ZMUC C-F-123303 GoogleMaps Tange å vest for Kjellerup ; 56°17.959′ N, 9°23.462′ E; NH23; 17 Feb. 2018; JP 988; JP det.; ZMUC C-F-123495 GoogleMaps Vingsted ; 55°40.512′ N, 9°23.500′ E; NG27; 6 Oct. 2019; JP 1532; JP det.; ZMUC C-F-124291 . – GoogleMaps Lolland, Falster, Møn (LFM) • Naesby Strand ; 54°44.625′ N, 11°4.539′ E; PF36; 23 Feb. 2014; JP 552; JP det.; ZMUC C-F-123038 . – GoogleMaps Nordøstjylland (NEJ) • Bøgebakken i Tofte Skov ; 56°50.540′ N, 10°11.850′ E; NJ70; 17 May 2013; H. Liljehult 198; JP det.; ZMUC C-F-122677 GoogleMaps Bønderskoven i Tofte Skov ; 56°49.955′ N, 10°14.981′ E; NH79; 19 May 2013; JP 314; JP det.; ZMUC C-F-122793 GoogleMaps ibid.; 8–22 Aug. 2013; I. Aggerholm 932; JP det.; ZMUC C-F-123432 . – GoogleMaps Nordøstsjaelland (NEZ) • Bognaes Storskov ; 55°41.242′ N, 12°1.678′ E; UB17; 1 Aug. 2013; JP 362; JP det.; ZMUC C-F-122845 GoogleMaps Gurre Vang ; 56°1.470′ N, 12°29.486′ E; UC41; 14 Apr. 2017; JP 270; JP det.; ZMUC C-F-122749 GoogleMaps Stampeskov ved Rådvad ; 55°48.332′ N, 12°33.138′ E; UB48; 14 Apr. 2013; JP 784; JP det.; ZMUC C-F-123279 . – GoogleMaps Nordvestsjaelland (NWZ) • Bognaes Skov på Tuse Naes ; 55°44.966′ N, 11°45.817′ E; PG78; 10 Dec. 2013; JP 889; JP det.; ZMUC C-F-123387 GoogleMaps Nordbredden af Skarresø ; 55°39.425′ N, 11°22.998′ E; PG47; 19 Feb. 2017; H. Liljehult 366; JP det.; ZMUC C-F-122849 GoogleMaps Sonnerup Skov ; 55°56.525′ N, 11°33.988′ E; PH60; 1 Apr. 2017; JP 256; JP det.; ZMUC C-F-122736 . – GoogleMaps Sydjylland (SJ) • Nord for Vråby Plantage; 55°6.640′ N, 8°30.239′ E; MG60; 21 Apr. 2000; H. Liljehult 199; JP det.; ZMUC C-F-122678 . – GoogleMaps Sydsjaelland (SZ) • Krobaek i Sjolte Skov; 55°10.772′ N, 12°0.863′ E; UB11; 28 Feb. 2015; JP 444; JP det.; ZMUC C-F-122929 GoogleMaps .

Remarks

Perhaps one of the most common species of Laboulbeniales in Denmark, where it is infrequent to find specimens of Othius free of this fungus. Also remarkable is the observation of severely infected hosts.

De Kesel A. & Haghebaert G. 1991. Laboulbeniales (Ascomycetes) of Belgian Staphylinidae (Coleoptera). Bulletin Annuel de la Societe Royale Belge d'Entomologie 127: 253 - 270.

De Kesel A. 2002. Het genus Rhachomyces (Ascomycetes, Laboulbeniales) in Belgie. Sterbeeckia 21 / 22: 74 - 84.

Haelewaters D., Nuytinck J. & De Kesel A. 2012. Laboulbeniales in Nederland: een introductie. Natuurhistorisch Maandblad. 101 (5): 88 - 93.

Majewski T. 1994 b. The Laboulbeniales of Poland. Polish Botanical Studies 7: 1 - 466.

Rossi W. & Maca J. 2006. Notes on the Laboulbeniales (Ascomycetes) from the Czech Republic. Sydowia 58 (1): 110 - 124.

Rossi W., Maca J. & Vavra J. 2010. New records of Laboulbeniales (Ascomycota) from the Czech Republic and Slovakia. Polish Botanical Studies 55 (2): 343 - 351.

Rossi W., Gueorguiev B., Georgiev G. & Stoianova D. 2019 a. Laboulbeniales (Ascomycota) from Bulgaria and other countries. Plant Biosystems 153 (1): 48 - 59. https: // doi. org / 10.1080 / 11263504.2018.1454531

Rostrup O. 1935. Bidrag til Danmarks Svampeflora. II. Dansk Botanisk Arkiv 8 (8): 1 - 74.

Santamaria S. 1989. El orden Laboulbeniales (Fungi, Ascomycotina) en la Peninsula Iberica e Islas Baleares. Edicions Especials de la Societat Catalana de Micologia 3: 1 - 396.

Santamaria S., Balazuc J. & Tavares I. I. 1991. Distribution of the European Laboulbeniales (Fungi, Ascomycotina). An annotated list of species. Treballs de l'Institut Botanic de Barcelona 14: 1 - 123.

Thaxter R. 1893. New species of Laboulbeniaceae from various localities. Proceedings of the American Academy of Arts and Sciences 28 (10): 156 - 188. https: // doi. org / 10.2307 / 20020515

Thaxter R. 1895. Notes on Laboulbeniaceae, with descriptions of new species. Proceedings of the American Academy of Arts and Sciences 30 (20): 467 - 481. https: // doi. org / 10.2307 / 20020600

Thaxter R. 1896. Contribution towards a monograph of the Laboulbeniaceae. Memoirs of the American Academy of Arts and Sciences 12 (3): 187 - 429.

Gallery Image

Fig. 17. Rhachomyces spp. A–B. R. canariensis Thaxt. Mature thalli from Trechus obtusus (A) and Epaphius secalis(B). Appendages type “c” are labelled in A (*). – C–D. R. furcatus (Thaxt.) Thaxt. Mature thalli with appendages of type “c” labelled in D (*). – E–F. R. lasiophorus (Thaxt.) Thaxt. Mature thalli. F. Short form from tarsi. Scale bars: 50 µm. Photographs from slides ZMUC C-F-122765 (A), ZMUC C-F-123438 (B), ZMUC C-F-122521 (C–D), ZMUC C-F-122906 (E–F).

Gallery Image

Fig. 102. Habitus of hosts with fungi. Some thalli are zoomed in, and others are encircled. A. Othius punctulatus with thalli of Rhachomyces furcatus. B. Philonthus fumarius with thalli of Rhachomyces philonthinus on the ventral side of the last 4 abdominal segments and a few on the left hind leg. C. Catops tristis heavily infested with Asaphomyces cholevae all over the body, even on the ventral side this specimen has just as many thalli. Scale bars: 1 mm. (Photos: Aslak Kappel Hansen).

Kingdom

Fungi

Phylum

Ascomycota

Class

Laboulbeniomycetes

Order

Laboulbeniales

Family

Laboulbeniaceae

SubFamily

Laboulbenioideae

Tribe

Teratomyceteae

SubTribe

Rhachomycetinae

Genus

Rhachomyces