Entomopathogenic activity of a variety of the fungus, Colletotrichum acutatum, recovered from the elongate hemlock scale, Fiorinia externa.
Article
Marcelino, José AP, Gouli, Svetlana, Parker, Bruce L et al. (2009). Entomopathogenic activity of a variety of the fungus, Colletotrichum acutatum, recovered from the elongate hemlock scale, Fiorinia externa.
. JOURNAL OF INSECT SCIENCE, 9 13. 10.1673/031.009.1301
Marcelino, José AP, Gouli, Svetlana, Parker, Bruce L et al. (2009). Entomopathogenic activity of a variety of the fungus, Colletotrichum acutatum, recovered from the elongate hemlock scale, Fiorinia externa.
. JOURNAL OF INSECT SCIENCE, 9 13. 10.1673/031.009.1301
A fungal epizootic in populations of Fiorinia externa Ferris (Hemiptera: Diaspididae) infesting hemlock trees, Tsuga canadensis (L.) Carrière (Pinales: Pinaceae) in forests of the Northeastern US has been recently detected. The current known distribution of the epizootic spans 36 sites in New York, Pennsylvania, New Jersey and Connecticut. Colletotrichum acutatum Simmonds var. fioriniae Marcelino and Gouli var. nov. inedit. (Phyllachorales: Phyllachoraceae) was the most prevalent fungus recovered from infected scales. Bioassays indicated that this C. acutatum variety is highly pathogenic to F. externa. Mortality rates of >90 and >55% were obtained for F. externa crawlers and settlers, respectively. Significantly lower mortality levels,
