New Laboulbeniales from China (Ascomycota) Author Rossi, Walter Sect. Environmental Sciences, Dept. MeSVA, University of L’Aquila, 67100 L’Aquila (Italy) valter. rossi @ univaq. it rossi@univaq.it Author Leonardi, Marco Sect. Environmental Sciences, Dept. MeSVA, University of L’Aquila, 67100 L’Aquila (Italy) marco. leonardi @ cc. univaq. it (corresponding author) text Cryptogamie, Mycologie 2020 2020-02-24 20 1 1 7 http://dx.doi.org/10.5252/cryptogamie-mycologie2020v41a1 journal article 10.5252/cryptogamie-mycologie2020v41a1 6b003b21-f0e6-47ac-90ad-cf2837d7b05e 1776-100X 7814964 Laboulbenia assingii W.Rossi & M.Leonardi , sp. nov. ( Fig. 1A ) Thallus compact, with very short receptacle and cell V not reaching cell III; inner appendage minute, bearing a single, terminal antheridium; outer appendage unbranched and unusually stout, its basal cell as broad as cell III. ETYMOLOGY. — Named after the German entomologist Volker Assing, distinguished student of the Staphylinidae and collector of the new species. MATERIAL EXAMINED. — China . S Gansu , S Longnan , Min Shan , 1500 m , 33°05’24”N , 104°45’13”E , on the dorsal side of the abdomen of Mimogonus , sp. ( Coleoptera , Staphylinidae , Osoriinae), 06.VIII.2012 , leg. V. Assing ( holo- , FI [FI WR3766 ]). MYCOBANK. — MB 831065. DESCRIPTION Thallus short and compact, colored dirty yellow with somewhat darker perithecium. Receptacle very short, broadly triangular, with cell I slightly longer than maximum width and cell II about as long, but much broader than the former, separated from cell III by a short, horizontal septum and from cell VI by a much longer, oblique and sometimes concave septum. Cell III quadrangular, slightly longer than broad. Cell IV similar to cell III, with a small and triangular cell V in its upper, inner angle. Insertion cell dark brown, relatively thin. Outer appendage simple and unusually stout, its basal cell as broad as cell III. Inner appendage consisting of a very small basal cell bearing a single flask-shaped antheridium. Perithecium ovoid, almost one half free from the receptacle, with a short, broad and blackened tip ending in an obliquely truncate and almost flattened apex distinctly directed outwards. Length from foot to perithecial tip 123-150 µm; perithecium 76-81 × 39-41 µm. REMARKS The very stocky habitus paired with the stout outer appendage makes this new species distinguishable at first sight. Laboulbenia assingii , sp. nov. , is likely allied to L . kenyensis W.Rossi & Santam. parasitic on Mimogonus rossii Bordoni from Kenya , which also has a simple outer appendage and a single antheridium, but the latter species has a more slender appendage, elongate perithecium, much longer basal and suprabasal cells forming a geniculate receptacle, as well as other minor differences ( Rossi & Santamaría 2000 ).