Scymnus (Pullus) impexus Mulsant

• Main Authors: Majka, Christopher G., Mccorquodale, David B.
• Format: Text
• Language: unknown
• Published: Zenodo 2006
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Insecta; Coleoptera; Coccinellidae; Scymnus; Scymnus impexus; Canada; Trinidad; Newfoundland; Alaska
• Online Access: https://dx.doi.org/10.5281/zenodo.5620933; https://zenodo.org/record/5620933

Scymnus (Pullus) impexus Mulsant NOVA SCOTIA : Colchester County: Debert, 25 June 1952, Dept. Natural Resources, 10 specimens, NSMC; Shelburne County: Shelburne, 24 June 1965, R.C. Clarke, 10 specimens, CNC; Shelburne, 7 July 1965, R.C. Clarke, 2 specimens, CNC. McNamara (1991) reported this Palearctic species in both Nova Scotia and New Brunswick based on accounts in Gordon (1976, 1985) that, in turn, are derived from reports in Clarke and Brown (1961) and CIBC (1971) of deliberate introductions made in New Brunswick, Nova Scotia, and Newfoundland between 1951 and 1955, and then again between 1962 and 1966. These were done for biocontrol of the balsam wooly adelgid, Adelges piceae (Ratzeburg). While S. impexus survived for up to five years (Gordon 1976), the introduced populations declined and there is no evidence of long­term persistence. Contemporary collecting has not found this species at sites where it was introduced or anywhere else. Since there is no evidence of persistence we do not consider it to be presently part of the fauna of Nova Scotia or New Brunswick. : Published as part of Majka, Christopher G. & Mccorquodale, David B., 2006, The Coccinellidae (Coleoptera) of the Maritime Provinces of Canada: new records, biogeographic notes, and conservation concerns, pp. 49-68 in Zootaxa 1154 on page 55, DOI: 10.5281/zenodo.273410 : {"references": ["McNamara, J. (1991) Family Coccinellidae: ladybird beetles. In: Bousquet, Y. (Ed.). Checklist of the Beetles of Canada and Alaska. Agriculture Canada Publication 1861 / E. pp. 229 - 237.", "Gordon, R. D. (1976) The Scymnini (Coleoptera: Coccinellidae) of the United States and Canada: key to genera and revision of Scymnus, Nephus and Diomus. Bulletin of the Buffalo Society of Natural Sciences, 28, 1 - 369.", "Gordon, R. D. (1985) The Coccinellidae (Coleoptera) of America north of Mexico. Journal of the New York Entomological Society, 93,1 - 912.", "Clarke, R. C. & Brown, N. R. (1961) Studies of predators of the balsam woolly aphid Adelges piceae (Ratz.) (Homoptera: Adelgidae) IX. P ullus impexus (Muls.) (Coleoptera: Coccinellidae), an introduced predator in eastern Canada. Canadian Entomologist, 93, 1162 - 1168.", "CIBC (1971) Biological control programmes against insects and weeds in Canada 1959 - 1968. Technical Committee No. 4. Commonwealth Institute of Biological Control, Trinidad. 266 pp."]}