Systematic revision of species of Atractilina and Spiropes hyperparasitic on Meliolales (Ascomycota) in the tropics Author Bermudez-Cova, Miguel A. https://orcid.org/0000-0002-7712-7347 Mycology Research Group, Faculty of Biological Sciences, Goethe University Frankfurt Am Main, Frankfurt Am Main, Germany & Departamento de Biologia de Organismos, Division de Ciencias Biologicas, Universidad Simon Bolivar, Caracas, Venezuela miguelangelbermudez11@hotmail.com Author Hofmann, Tina A. https://orcid.org/0000-0003-1124-402X Centro de Investigaciones Micologicas (CIMi), Herbario UCH, Universidad Autonoma de Chiriqui, David, Panama Author Yorou, Nourou S. https://orcid.org/0000-0001-6997-811X Research Unit Tropical Mycology and Plants-Soil Fungi Interactions (MyTIPS), Faculty of Agronomy, University of Parakou, BP 123, Parakou, Benin Author Piepenbring, Meike https://orcid.org/0000-0002-7043-5769 Mycology Research Group, Faculty of Biological Sciences, Goethe University Frankfurt Am Main, Frankfurt Am Main, Germany text MycoKeys 2024 2024-04-11 103 167 213 http://dx.doi.org/10.3897/mycokeys.103.115799 journal article http://dx.doi.org/10.3897/mycokeys.103.115799 1314-4049-103-167 CF837EBCE0335B0E974E3AE4A1798F4A Spiropes carpolobiae Berm.-Cova & M. Piepenbr. sp. nov. Fig. 6 Holotype. On Meliola cf. carpolobiae on living leaves of Carpolobia lutea ( Polygalaceae ), Benin, Atlantique, Attogon, Niaouli Forest, 6°44'41"N , 2°7'52"E , 68 m a.s.l., 28 February 2022, M.A. Bermudez , A. Tabe , D. Dongnima, I. Agonglo, O.P. Agbani, M. Piepenbring, N.S. Yorou, MB166 (M). Figure 6. Spiropes carpolobiae (MB 166) a conidiophores growing intermingled with hyphae of Meliola sp. on a leaf of Carpolobia lutea b conidiophore with scars c Conidia shown in optical section. The thickness of the wall is shown in the left-hand drawing d, e as seen by SEM d conidiophore with scar e conidium. Scale bars: 0.3 mm ( a ); 5 μm ( b, c ); 5 μm ( d ); 3 μm ( e ). Etymology. Named after the genus of the host plant. Description. Colonies effuse, dark brown to black, velvety to hairy. Hyphae superficial, branched, anastomosing, septate, 1-2 µm wide, straw-coloured, smooth. Conidiophores arising singly, erect or ascending, straight to flexuous, septate, up to 250 µm long, 2-5 µm thick, sometimes thicker at the apex, brown, not smooth, with scattered scars mostly in the upper parts of the conidiophores. Conidia solitary, straight or slightly curved, ovate to slightly fusiform, 3-septate, (12.5-)13-16(-19) x 5-7 µm , 2-2.5 µm wide at the base, brown, the cells at each end pale brown, septa darker, surface verrucose. As seen by SEM, the ornamentation of the conidia is distinctly reticulated, with thin to thick networks that can form ridges. Known distribution. On colonies of Meliola cf. carpolobiae on living leaves of Carpolobia lutea in Benin. Notes. S. carpolobiae is the only known species of Spiropes with ovate to slightly fusiform conidia.