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 305924 10.5852/ejt.2021.781.1583 592281fb-ec34-447a-869b-e2722722534e 2118-9773 5828924 Genus Eusynaptomyces Thaxt. MB#1947 Memoirs of the American Academy of Arts and Sciences 16: 340 ( Thaxter 1931 ) . – Type species: E. borealis Thaxt. Brief description Monoecious. As Ceratomyces , but differing from it by the preapical simple or bifurcate horns on the perithecium and by the multicellular lower receptacle consisting of more than five cells. Remarks The genus consists of six species on Hydrophilidae (Coleoptera) , of which four in Europe, two in Denmark . The most recently described species is E. cornutus ( Santamaria 2006 ) . Key to the Danish species (partially following Majewski 1994b ) 1. Receptacle three- to five-celled. Between the claws of anterior tarsi in Enochrus Thomson, 1859 (Col. Hydrophilidae ).................................................................................................. E. enochri Scheloske – Receptacle consisting of more than 10 cells. On other host locations. On Hydrobius Leach, 1815 (Col. Hydrophilidae )............................................................................... E. hydrobii (T.Majewski) I.I.Tav.