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 Stigmatomyces constrictus Thaxt. MB#189362 Fig. 56E–G Proceedings of the American Academy of Arts and Sciences 36: 401 ( Thaxter 1901a ). – Type : “ On the legs and abdomen of a small fly . Ralum , New Pomerania . Berlin Museum, No. 1294 ”; FH . [ Papua New Guinea ] Stigmatomyces elachipterae Thaxt. ( Thaxter 1905: 323 ) [MB#191996] Diagnostic features Basal cell of appendage small, supporting a lower elongate cell bearing three antheridia, and two additional cells with two and three antheridia from bottom to top cell respectively. Perithecium with a venter distally producing four rounded prominences, and four more prominences on the transition between tiers w 2 and w 3 . [Detailed description: Weir & Rossi 1995 ] Fig. 56. Stigmatomyces spp. A –D . S. burdigalensis (Balazuc) A.Weir & W.Rossi. A –B . Mature thalli showing labelled cells I, II, III, VI, and basal cell of primary appendage (bc a). C . Primary appendage in detail from an immature thallus. D . Perithecial apex in detail showing slightly undulate margins and a conical tip. – E–G . S. constrictus Thaxt. Mature thalli. Surface of basal cell I appears characteristically striated (arrows in E and G). Scale bars: 50 µm. Photographs from slides ZMUC C-F-123707 (A–D), ZMUC C-F-124084 (E–G). Distribution and hosts Occurs on several genera of Diptera Chloropidae from the five continents: Papua New Guinea ( type ), Panama , Cameroon , Grenada , Jamaica , Trinidad & Tobago ( Thaxter 1917 ), USA ( Seymour 1967 ), Italy ( Rossi 1993 ), United Kingdom ( Weir & Rossi 1995 ), Bolivia ( Rossi 1998 ), Brazil ( Bergonzo et al. 2004 ), Uganda , Portugal , Sierra Leone , Taiwan , Germany , Yemen , Greece , Cuba ( Rossi et al. 2013 ), and Slovenia ( Rossi & Christian 2020 ). Collections examined from Denmark On Elachiptera brevipennis (Meigen, 1830) ( Diptera Chloropidae ) DENMARK – Sydsjaelland (SZ) • Østerskov ved Langebaek ; 54°59.421′ N , 12°6.435′ E ; UA19; 19 Aug. 2019 ; JP 1497 ; JP det.; ZMUC C-F-124084 . Remarks First record from Denmark . Its presence in Denmark is not surprising according to the cosmopolitan distribution of the species. The surface of basal cell (I) appears characteristically striated ( Fig. 56E–G , arrows).