unknown

Specimens were found on the underside of living leaves of forest plants. Hosts are leafhoppers (Hemiptera: Cicadellidae). The stroma covering the insect forms a compact white film, spreading over the leaf. A single synnema (rarely double) usually arises from between the head and thorax of the host, needle-like, 7-15 mm long, 200-300 μm wide at the base, tapering to the tip. Conidiogenous cells monophialidic, subulate, 12.5-15.5 μm long, base 1-2 μm across, hyaline. The phialidic conidiogenous cells are scattered over the outer strands of the loose mycelium making up the synnema. One or more phialides arise from each basal cell. Conidia acerose, hyaline, aseptate, smooth-walled, 5.5-9.5 μm long and 0.5 μm wide, lacking a mucilaginous coat. The conidia will germinate after 24 h on PDA. Colonies are slow-growing, attaining a diam. of 10 mm in 1 mo at 25°C and produce only sterile white mycelia. Hirsutella nivea has been found mostly in the central parts of Thailand, especially at Khao Yai National Park, but collections have also been made throughout the country.