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 divergatus Thaxt. MB#263386 Figs 57G–K , 106B Memoirs of the American Academy of Arts and Sciences 16: 122 ( Thaxter 1931 ) . – Type : “ On the superior tip of the abdomen of Leptocera sp. , No. 3479 , Fort de Kock , Sumatra ”; FH . Stigmatomyces chthonicus Huldén ( Huldén 1983: 65 ) [MB#108564] Stigmatomyces subterraneus Huldén ( Huldén 1983: 68 ) [MB#108570] Diagnostic features Basal cell of appendage slightly darker, supporting a series of 3–10 flattened, oblique, dorsally almost inflated cells, each giving rise to rather elongated antheridia on the inner margin. Perithecium with an oval venter, showing distal knobs below the neck ( Fig. 57K ) and a well-distinguished, slightly bent, gradually tapering neck ending in a distinct, asymmetrical tip which shows two protruding lips. [Detailed descriptions: Majewski 1994b – as S. chthonicus and S. subterraneus –; De Kesel & Hanssens 2007 ] Distribution and hosts Reported from Indonesia ( type ), USA ( Rossi et al. 2013 ), and some European countries like Finland ( Huldén 1983 , as S. chthonicus and S. subterraneus ), Poland ( Majewski 1990a , 1990b as S. subterraneus and S. chthonicus , respectively), Spain ( Santamaria & Rossi 1993 ), Belgium ( De Kesel & Hanssens 2007 ), and Portugal ( Rossi et al. 2013 ). Occurs on Leptocera , Spelobia , Apteromyia , and Limosina ( Diptera Sphaeroceridae ). Fig. 57. Stigmatomyces spp. A –F . S. crassicollis Thaxt. A –D . Mature thalli, from Leptocera fontinalis (A–B), from Spelobia luteilabris (C), and from Spelobia rufilabris (D). E–F . Primary appendages in detail. – G–K . S. divergatus Thaxt. G –I . Mature thalli. J . Primary appendage in detail. K . Perithecial tip in detail. Scale bars: 50 µm. Photographs from slides ZMUC C-F-124097 (A, E), ZMUC C-F-124017 (B, F), ZMUC C-F-124018 (C), ZMUC C-F-124019 (D), ZMUC C-F-123720 (G–H, J–K), ZMUC C-F-123717 (I). Collections examined from Denmark On Spelobia clunipes (Meigen, 1830) ( Diptera Sphaeroceridae ) DENMARK Nordøstsjaelland (NEZ) Stampeskov ved Rådvad ; 55°48.332′ N , 12°33.138′ E ; UB48; 14 Apr. 2013 ; JP 1191 ; W. Gritsch det.; ZMUC C-F-123715 . – Sydsjaelland (SZ) Gammel Dyrehave ved Edelesminde ; 55°16.930′ N , 11°58.348′ E ; PG83; 27 Nov. 2016 ; JP 1192 ; W. Gritsch det.; ZMUC C-F-123716 Haslev ; 55°19.669′ N , 11°58.206′ E ; PG83; 19 Jun. 2016 ; JP 1190 ; W. Gritsch det.; ZMUC C-F-123714 . On Spelobia luteilabris (Rondani, 1880) ( Diptera Sphaeroceridae ) DENMARK Fyn (F) Skovsgårds Mølle ; 54°50.339′ N , 10°44.594′ E ; PF17; 5 Oct. 2016 ; JP 1195 ; W. Gritsch det.; ZMUC C-F-123719 . On Spelobia palmata (Richards, 1927) / talparum (Richards, 1927) ( Diptera Sphaeroceridae ) DENMARK Nordøstsjaelland (NEZ) Indelukket ved Frederiksborg Slot ; 55°56.191′ N , 12°17.861′ E ; UC30; 19 Mar. 2017 ; JP 1194 ; W. Gritsch det.; ZMUC C-F-123718 . – Sydsjaelland (SZ) Gammel Dyrehave ved Edelesminde ; 55°16.930′ N , 11°58.348′ E ; PG83; 27 Nov. 2016 ; JP 1193 ; W. Gritsch det.; ZMUC C-F-123717 . On Spelobia sp. ( Diptera Sphaeroceridae ) DENMARK Østjylland (EJ) Kjellerup ; 56°17.644′ N , 9°25.850′ E ; NH23; 16 Feb. 2018 ; JP 1196 ; W. Gritsch det.; ZMUC C-F-123720 . Remarks First record from Denmark . This species may be difficult to distinguish from S. crassicollis in the absence of the four knobs on the perithecial venter as in S. divergatus .