Notes on the biology of Scymnus (Pullus) coniferarum: an adelgid predatorThis article is part of a larger document. View the larger document here.
The conifer lady beetle, Scymnus (Pullus) coniferarum Crotch 1874, was previously collected from five states in the western U.S. and from British Columbia. Whitehead, in his 1967 thesis, noted that all collection records of S. coniferarum were from pine and that he collected large numbers from lodgepole pine and Monterey pine infested with adelgids. In 2008-2009, we collected 303 S. coniferarum adults from several locations in the Seattle, WA, metropolitan area from western hemlock, Tsuga heterophylla, infested with the hemlock woolly adelgid, Adelges tsugae Annand.