Laboulbeniomycetes (Fungi, Ascomycota) of Denmark Author Santamaria, Sergi Unitat de Botànica, Departament de Biologia Animal, de Biologia Vegetal i d’Ecologia, Facultat de Biociències, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès (Barcelona), Spain. sergi.santamaria@uab.cat Author Pedersen, Jan Natural History Museum of Denmark (Zoological Museum), University of Copenhagen, Universitetsparken 15, 2100 København Ø, Denmark. japedersen@snm.ku.dk text European Journal of Taxonomy 2021 2021-11-26 781 1 425 http://dx.doi.org/10.5852/ejt.2021.781.1583 journal article 10.5852/ejt.2021.781.1583 2118-9773 5828924 Rhachomyces canariensis Thaxt. MB#189311 Fig. 17A–B Proceedings of the American Academy of Arts and Sciences 35: 436 ( Thaxter 1900 ) . – Type : “ On Trechus flavomarginatus Woll. , British Museum., No. 419. Teneriffe . On elytra”; FH . [ Canary Islands ] Rhachomyces bolivarii Gonz. Fragoso ( González Fragoso 1924: 405 ) [MB#189408] Rhachomyces reymondii Lepesme ( Lepesme 1942: 66 , as reymondi ) [MB#290453] Rhachomyces vayssierei Lepesme ( Lepesme 1942: 65 ) (sensu Balazuc 1971e: 114 ) [MB#290455] Diagnostic features Main receptacle axis consisting of 6–23 cells. Appendages of type “a” and “b” very similar, consisting of 3–5 brownish cells. Those of type “b” mostly abundant, surrounding ± the base of the perithecium. Appendages of type “c” consisting of a solitary flask-shaped, somewhat falcate antheridium, above a darkened supporting cell, which is separated from cells of the tertiary receptacle by a dark and constricted septum ( Fig. 17A , *). Perithecium rather stout; septa between wall cells slightly prominent. [Detailed descriptions: Thaxter 1908 ; Santamaria 1989 ; Majewski 1994b ; De Kesel 2002 ] Distribution and hosts Occurs on species of the genus Trechus and Epaphius Leach, 1819 (Col. Carabidae ), including caveinhabiting and surface species.According to Santamaria et al. (1991) appears to be widespread in Europe ( Austria , Bulgaria , France , Germany , Hungary , Italy , Poland , Portugal , Spain , Sweden , Russia ), Canary Islands, Madeira, Morocco and Turkey . Also from Bosnia-Herzegovina ( Balazuc 1971d ). Reported later from Belgium ( De Kesel & Rammeloo 1992 ), United Kingdom ( Weir 1994 ), Czech Republic ( Rossi & Máca 2006), Denmark ( Høier 2009 ), Switzerland ( Hoess & Senn-Irlet 2009 ), and the Netherlands ( Haelewaters & De Kesel 2020 ). Collections examined from Denmark On Epaphius secalis (Paykull, 1790) (Col. Carabidae ) DENMARK Nordøstjylland (NEJ) Bønderskoven i Tofte Skov ; 56°49.955′ N , 10°14.981′ E ; NH79; 8–22 Aug. 2013 ; I. Aggerholm 941 ; JP det.; ZMUC C-F-123444 Engskoven i Tofte Skov ; 56°51.525′ N , 10°15.065′ E ; NJ70; 8–22 Aug. 2013 ; I. Aggerholm 937 ; JP det.; ZMUC C-F-123438 . On Trechus obtusus Erichson, 1837 (Col. Carabidae ) DENMARK Fyn (F) Gyldenstens inddaemmede Strand ; 55°34.447′ N , 10°7.211′ E ; NG75; 2 Apr. 2014 ; JP 703 ; JP det.; ZMUC C-F-123192 Knudshoved Marina ; 55°17.781′ N , 10°50.542′ E ; PG12; 18 Oct. 2017 ; JP 587 ; JP det.; ZMUC C-F-123073 . – Lolland, Falster, Møn (LFM) Naesby Strand ; 54°44.625′ N , 11°4.539′ E ; PF36; 23 Feb. 2014 ; JP 550 ; JP det.; ZMUC C-F-123036 Rødbyhavn ; 54°39.569′ N , 11°21.958′ E ; PF55; 7 May 2017 ; JP 398 ; JP det.; ZMUC C-F-122881 . – Nordøstjylland (NEJ) Bønderskoven i Tofte Skov ; 56°49.955′ N , 10°14.981′ E ; NH79; 8–22 Aug. 2013 ; I. Aggerholm 927 ; JP det.; ZMUC C-F-123426 , C-F-123442 Engskoven i Tofte Skov ; 56°51.525′ N , 10°15.065′ E ; NJ70; 8–22 Aug. 2013 ; I. Aggerholm 936 ; JP det.; ZMUC C-F-123436 Havgranerne i Tofte Skov ; 56°50.576′ N , 10°15.552′ E ; NJ70; 5–19 Sep. 2013 ; I. Aggerholm 925 ; JP det.; ZMUC C-F-123423 Knarmod i Tofte Skov ; 56°51.824′ N , 10°15.470′ E ; NJ70; 22 Aug.–5 Sep. 2013 ; I. Aggerholm 948 ; JP det.; ZMUC C-F-123453 Toftgården i Tofte Skov ; 56°50.789′ N , 10°12.918′ E ; NJ70; 22 Aug.–5 Sep. 2013 ; I. Aggerholm 945 ; JP det.; ZMUC C-F-123449 . – Nordøstsjaelland (NEZ) Kagsmose ; 55°42.698′ N , 12°27.378′ E ; UB47; 19 Sep. 2013 ; H. Liljehult 1397 ; JP det.; ZMUC C-F-123940 . – Nordvestsjaelland (NWZ) Bognaes SkovTuse Naes ; 55°44.966′ N , 11°45.817′ E ; PG78; 10 Dec. 2013 ; JP 879 ; JP det.; ZMUC C-F-123377 Maglesø Plantage ; 55°38.136′ N , 11°41.186′ E ; PG66; 18 Feb. 2017 ; JP 286 ; JP det.; ZMUC C-F-122765 . On Trechus quadristriatus (Schrank, 1781) (Col. Carabidae ) DENMARK Nordøstsjaelland (NEZ) Vest for Trørød ; 55°50.223′ N , 12°31.185′ E ; UB50; 13 Nov. 2016 ; JP 139 ; JP det.; ZMUC C-F-122616 . Remarks There are no important differences between thalli found on surface beetles ( type specimens) and those collected on cave beetles (described as R. bolivarii , R. reymondii and R. vayssierei ). The species is very common in Denmark .