Canadian Forest Service Publications

Two species of Entomophthora pathogenic to the eastern hemlock looper (Lepidoptera: Geometridae) in Newfoundland. 1973. Otvos, I.S.; MacLeod, D.M.; Tyrrell, D. The Canadian Entomologist 105: 1435-1441.

Year: 1973

Issued by: Atlantic Forestry Centre

Catalog ID: 25735

Language: English

CFS Availability: Order paper copy (free)

Mark record

Abstract

Two fungi, Entomophthora sphaerosperma and E. egressa, were collected and identified from larvae of the eastern hemlock looper, Lambdina f. fiscellaria (Guen.), in Newfoundland. These two fungi appear to play themost important role in the decline of looper infestations. Field trials indicate that the disease can be transmitted from laboratory-reared larvae artificially infected with the protoplast stage of E. egressa, to uninfected larvae. This suggests that infection may be established artificially within a population of the looper prior to the "natural" occurrence of the epizootic.