Basionym: Verticillium cinnamomeum Petch 1932

Teleomorph state: Conoideocrella luteorostrata (Zimm.) D. Johnson, G.H. Sung, Hywel-Jones & Spatafora 2009

Specimens were found on the underside of dicotyledonous leaves of forest plants. Hosts are scale insect nymphs (Hemiptera). Mycelia covering the scale insect, cin-namon-brown to pale brown color, with lines of hyaline to white mycelia radiating out of the scale insect. Stromata, up to 3 mm in diam., smooth-walled to slightly roughened. Conidiophores erect, hyaline, scattered, surrounding stroma and on the leaf surface near the stroma, 100-250 x 2-3 µm, consisting of verticillate branches with whorls of 2-6 phialides. Phialides flask-shaped, 6-12 x 2 µm. Conidia in chains, fusiform, smooth-walled, hyaline, 5-6 x 2 µm. Colonies on PDA are slow-growing, attaining a diam. of 70-80 mm within 14 d at 20oC. Colonies are at first white turning cin-namon-brown to pale brown with age. Paecilomyces cinnamomeus is a very common species in Thailand. Collections have been from Doi Inthanon National Park in the far north until Khao Pu - Khao Ya National Park in the far south. To date there have been no records from monocotyledonous plants (eg. bamboo).

Hywel-Jones, N.L. (1993). Torrubiella luteorostrata a pathogen of scale insects and its association with Paecilomyces cinnamomeus with a note on Torrubiella tenuis. Mycological Research 97: 1126–1130 Johnson D., Sung G.-H., Hywel-Jones, N.L., Luangsa-ard, J.J., Bischoff, J.F., Kepler, R.M. & Spatafora J.W. (2009). Systematics and evolution of the genus Torrubiella (Hypocreales, Ascomycota). Mycological Research 113: 279-289. Samson, R. A. (1974). Paecilomyces and some allied Hyphomycetes. Studies in Mycology 6: 1–119.