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 Peyritschiella hybrida (Thaxt.) I.I.Tav. MB#105644 Fig. 67C–D Mycologia Memoirs 9: 270 ( Tavares 1985 ) . – Basionym : Dichomyces hybridus Thaxt., Proceedings of the American Academy of Arts and Sciences 35: 423 ( Thaxter 1900 ) [MB#243880]. – Type : [Not designated] [Ind. loc.] “With both types of perithecia (the type form): on Philonthus aeneipennis Boh., Paris Museum, No. 203, Gulf of Oman , India ; on Philonthus sp. , British Museum, No. 366, Sylhet, Assam , India ; Philonthus sp. , Bengal, India , Berlin Museum, No. 825: P. Lewisius Shp., Japan , Sharp Coll., No. 1122; on Philonthus sp. , British Museum, No. 368, Hong Kong , China ”; FH. Diagnostic features Thallus symmetrical, up to 300 × 150 µm (length × width). Lower tier of cells blackened, almost entirely opaque except for the central area. Middle tier of cells blackened outwards; extending with laterally superposed cells forming strip-like expansions exceeding in length the upper part of the receptacle. Perithecia 2–6 in number; with the apices usually without auricles in Danish thalli. [Detailed descriptions: Thaxter 1908 ; Terada 1976 ; Santamaria 1989 ] Distribution and hosts A species with a wide distribution. Known from Europe ( Finland , Spain , United Kingdom ), America ( Grenada , USA ), Asia ( China , India , Japan , Korea , Sri Lanka , Taiwan), Canary Islands and Madeira ( Santamaria et al. 1991 ). Recently recorded from Cambodia ( Try et al. 2017 ), and Thailand ( Rossi & Bernardi 2018 ). Found on Philonthus and Spatulonthus (Col. Staphylinidae Staphylininae ). Collections examined from Denmark On Philonthus discoideus (Gravenhorst, 1802) (Col. Staphylinidae Staphylininae ) DENMARK – Nordøstsjaelland (NEZ) • Skaerød ; 56°0.673′ N , 12°9.646′ E ; UC21; 14 Jan. 2018 ; JP 958 ; JP det.; ZMUC C-F-123464 . Remarks First record from Denmark . This is not an easily recognizable species, it can only be identified with certainty when thalli show long lateral expansions of the first tier of cells in combination with a broad upper tier ( Fig. 67C ). Auriculate and not auriculate forms have been described, a detail that seems to be related with different growing locations of thalli on the host body ( Try et al. 2017 ). The Danish material is very scarce and belongs to the non-auriculate form.