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 Laboulbenia lichtensteinii F.Picard MB#222216 Fig. 36C–D Bulletin Scientifique de la France et de la Belgique 50: 449 ( Picard 1917 ; as L. lichtensteini ) . – Type : [Type lost!] “ Sur le thorax, les élytres et les pattes de Cillenus lateralis Curt. , … trouvés en juin 1915 à Roscof ( Finistère ) par M. Jean Lichtenstein ”. [ France ] Diagnostic features Cell V obtriangular, similar in size and shape to cell IV. Septum IV–V vertical, connected with septum III–IV. Insertion cell forming a black horizontal furrow. Appendages get damaged early, can only be seen to be well-organised in young thalli ( Fig. 36D ). Outer appendage consisting of 3–4 simple, short branches, arising from an irregular and almost flattened basal cell; basal and dorsal margins darkened. Inner appendage consisting of 1–2 simple branches, each bearing one solitary antheridium; basal cell minute. Perithecium ovoidal, with a broadly obtuse apex filled with joining irregular black spots [Detailed description: Santamaria 1998 ] Distribution and hosts Exclusive on the Col. Carabidae Cillenus lateralis (sometimes as Bembidion in old literature), a bizarre carabid stenotopic for sheltered, usually estuarine, mudflats with fine sand or gravel on the upper middle and upper shores. Typically found under stones or deposits of Ulva and Enteromorpha on or near the strandline, but can withstand considerable periods of immersion in saltwater. It feeds largely on talitrids. It is a suboceanic southern-temperate species found on coasts from southern Denmark and the British Isles south to the Iberian Peninsula and North Africa but not in the Eastern Mediterranean ( Anderson & McFerran 2001 ). The fungus has been reported in France ( type ), Spain ( Santamaria 1993b ), United Kingdom (Weir 1996), and the Netherlands ( Haelewaters et al. 2012 ). The record from Belgium by De Kesel (1998) is erroneous because the host was truly collected in the Netherlands according to De Kesel et al. (2020) . Collections examined from Denmark On Cillenus lateralis Samouelle, 1819 (Col. Carabidae ) DENMARK – Fyn (F) • Sprogø ; 55°20.012′ N , 10°58.263′ E ; PG23; 7 Sep. 2013 ; JP 101 ; JP det.; ZMUC C-F-122576 . – Sydjylland (SJ) • Sønderstrand på Rømø ; 55°6.373′ N , 8°29.380′ E ; MG60; 14 Mar. 2020 ; JP 1615 ; JP det.; ZMUC C-F-124364 . Remarks First record from Denmark . Laboulbenia lichtensteinii is related to other species of the L. pedicellata - complex. The appendage is the more remarkable characteristic, similar to the appendage of L. egens ( Santamaria 1998 ) . It is a rare species that should only be sought where its particular host is found.