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 Hydraeomyces halipli (Thaxt.) Thaxt. MB#148360 Fig. 21F–G Memoirs of the American Academy of Arts and Sciences 12: 293 ( Thaxter 1896 ) . – Basionym : Heimatomyces halipli Thaxt., Proceedings of the American Academy of Arts and Sciences 29: 32 ( Thaxter 1893 ) [MB#462738]. – Type : [Not designated] [Ind. loc.] “ On Haliplus ruficollis and Cnemidotus muticus , Connecticut ”; FH . [ USA ] [According to Tavares 1985 , the type are the fungi from H. ruficollis ] Hydraeomyces cnemidoti Thaxt. ( Thaxter 1908: 267 ) [Not registered in MycoBank] Hydraeomyces venetus Speg. ( Spegazzini 1915b: 52 ) [MB#187540] Parahydraeomyces italicus Speg. ( Spegazzini 1915b: 70 ) [MB#146173] Diagnostic features See genus description. [Detailed descriptions: Sugiyama 1973 ; Sugiyama & Hayama 1981 ; Weir 1994 ; Majewski 1994b ; Santamaria 2003 ; De Kesel & Werbrouck 2008 ] Distribution and hosts On species of the aquatic beetles belonging to the genera Haliplus and Peltodytes (= Cnemidotus Illiger, 1802 ) (Col. Haliplidae ). This fungus is widely distributed in Europe : Croatia , Czech Republic , Finland , France , Germany , Italy , Poland , Russia , Spain , United Kingdom ( Majewski 2008 ), Hungary ( Bánhegyi 1950 ), Belgium ( De Kesel & Werbrouck 2008 ), Sweden ( Huggert 2010 ), Bulgaria ( Rossi et al. 2019a ), Slovenia ( Rossi & Christian 2020 ), and the Netherlands ( Haelewaters & De Kesel 2020 ); Africa : Tunisia and Morocco ( Maire 1916a ); America : USA ( Thaxter 1892 ), and Argentina ( Spegazzini 1917 ); Asia : China ( Thaxter 1924 ), Japan ( Sugiyama 1973 ), and Taiwan ( Sugiyama & Hayama 1981 ). Collections examined from Denmark On Haliplus apicalis Thomson, 1868 (Col. Haliplidae ) DENMARK Lolland, Falster, Møn (LFM) Ulvshale ; 55°3.218′ N , 12°15.801′ E ; UB20; 10 Jun. 2017 ; JP 427 ; JP det.; ZMUC C-F-122912 . On Haliplus immaculatus Gerhardt, 1877 (Col. Haliplidae ) DENMARK Nordøstsjaelland (NEZ) NordhavnstippenKøbenhavns Nordhavn ; 55°43.091′ N , 12°37.088′ E ; UB57; 29 Apr. 2018 ; JP 1094 ; JP det.; ZMUC C-F-123611 . On Haliplus ruficollis (Degeer, 1774) (Col. Haliplidae ) DENMARK Lolland, Falster, Møn (LFM) Busemarke Mose ; 54°57.688′ N , 12°26.619′ E ; UA39; 19 Aug. 2019 ; JP 1495 ; JP det.; ZMUC C-F-124081 Ulvshale ; 55°2.729′ N , 12°16.354′ E ; UB20; 2 May 2018 ; JP 1101 ; JP det.; ZMUC C-F-123619 . – Nordøstsjaelland (NEZ) Heatherhill ; 56°5.240′ N , 12°8.611′ E ; UC21; 22 May 2016 ; JP 93 ; JP det.; ZMUC C-F-122568 . Remarks First record from Denmark . The presence of this species in Denmark is not surprising according to its cosmopolitan distribution.