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 Chitonomyces melanurus Peyr. MB#169599 Fig. 21C–D Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften. Wien . Mathematischnaturwissenschaftliche Classe. Abteilung 1 68: 250 ( Peyritsch 1873 ). – Heimatomyces melanurus (Peyr.) Saccardo ( Saccardo 1895: 448 ) [MB#250301]. – Type : [Not designated] [Ind. loc.] [Type lost?!] “Diese merkwürdige Art kommt stets in Gemeinschaft der nächst folgenden auf Wasserkäfern vor. Zuerst entdeckte ich sie auf Laccophilus minutus Sturm , dann auf Laccophilus hyalinus Degeer ”. [ Austria ] Heimatomyces melanurus (Peyr.) Saccardo ( Saccardo 1895: 448 ) [MB#250301] Diagnostic features Cell IIIa blackened, supporting an elongate, dark, hooked basal cell of the primary appendage ( Fig. 21D , arrow). Perithecial apex with two enlarged or lobulate lip cells formed by the uppermost wall cells from the anterior and posterior vertical rows ( Fig. 21C , *). [Detailed descriptions: Thaxter 1896 ; Sugiyama & Hayama 1981 ; Majewski 1994b ; Santamaria 2001b , 2003 ; De Kesel & Werbrouck 2008 ] Distribution and hosts A common species that can be found on the posterior lateral margin of the left elytron in Laccophilus (Col. Dytiscidae ) from Europe : Austria ( type ), Finland , France , Germany , Hungary , Italy , Poland , Spain , United Kingdom ( Santamaria et al. 1991 ), Belgium ( De Kesel & Werbrouck 2008 ), Sweden ( Huggert 2010 ), the Netherlands , Croatia , and Ukraine ( Haelewaters & De Kesel 2020 ); Africa : Algeria ( Maire 1920 ), Cameroon , Morocco ( Santamaria et al. 1991 ); Asia : China , Japan , Taiwan ( Santamaria et al. 1991 ), Korea ( Lee & Kim 1990 ), Turkey ( Rossi 2016 ), Cambodia ( Try et al. 2017 ), but not found in America and Oceania. Collections examined from Denmark On Laccophilus minutus (Linnaeus, 1758) (Col. Dytiscidae ) DENMARK – Bornholm (B) • Raghammer Odde ; 55°1.193′ N , 14°55.777′ E ; VA99; 22 Jun. 2018 ; JP 1146 ; JP det.; ZMUC C-F-123671 . – Vestjylland (WJ) • Simmelmose ; 55°46.299′ N , 9°3.519′ E ; NG08; 2 Jun. 2019 ; JP 1478 ; JP det.; ZMUC C-F-124062 . Remarks First record from Denmark . The finding of this species is not surprising because of its cosmopolitan distribution.