Cryptic species diversity in polypores: the Skeletocutisnivea species complex Author Korhonen, Aku Author Seelan, Jaya Seelan Sathiya Author Miettinen, Otto text MycoKeys 2018 36 45 82 http://dx.doi.org/10.3897/mycokeys.36.27002 journal article http://dx.doi.org/10.3897/mycokeys.36.27002 1314-4049--45 Skeletocutis yuchengii Miettinen & A. Korhonen sp. nov. Holotype. China. Yunnan: Xishuangbanna, Menglun, alt. 640 m, indet. angiosperm wood, 4 Aug 2005 Miettinen 9950 (H 7008660, isotype BJFC, strain FBCC 1132). Description. Basidiocarps annual; resupinate to half-resupinate; small, up to 2.5 cm wide and 3 mm thick; hard when dry but easy to break apart; pilei nodulous, protruding up to 3 mm; margin blunt; upper surface minutely rough, matted, white to cream coloured when young, turning ochraceous; pore surface cream coloured with yellowish to ochraceous tints; context up to 2.7 mm thick faintly zonate in longitudinal section with fuzzy, ochraceous lines separating layers of growth; tube layer up to 0.3 mm thick; pores 8 -10(- 11) per mm. Hyphal structure: skeletal hyphae in context / subiculum 1.0 -2.9(- 3.8) µm wide, in trama (2.0 -)3.0-4.0(- 5.1) µm wide, generative hyphae in trama 1.0 -2.0(- 2.2) µm wide. Basidiospores (2.7 -)2.8-3.1(-3.2)x(0.4-)0.5- 0.7 µm , L=2.96 µm . W=0.59 µm , Q'=(4.0-)4.1-6.0(- 7.2), Q=4.99, n=90/3. Distribution and ecology. The species is known from three specimens from Yunnan, China, collected from twigs of unidentified woody angiosperm. Etymology. In honour of the Chinese polypore researcher, Prof. Yu-Cheng Dai. Specimens examined. CHINA. Yunnan: (holotype, see above); Xishuangbanna Biosphere Reserve, alt. 700 m, indet. angiosperm wood (dead standing tree), 9 Aug 2005 Miettinen 10150.2 (H); Xishuang Banna Primeval Forest Park, indet. angiosperm wood (fallen branch), 16 Aug 2005 Miettinen 10366.1 (H). Rejected names