History of a pine false webworm (Hymenoptera: Pamphiliidae) outbreak in northern New York

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Abstract:

A sustained outbreak of pine false webworm, Acantholyda erythrocephala (L.) (Hymenoptera: Pamphiliidae), in northern New York is unprecedented in its extent and duration. White pine, Pinus strobus L., is the preferred host in this region. What began as a 30-ha infestation of this introduced sawfly in 1981 affected 5440 ha of white pine distributed throughout 231 000 ha in St. Lawrence and Franklin counties by 1995. Occurrence of A. erythrocephala in the United States has been documented in eight northeastern and one north-central state (Connecticutt, Massachusetts, Maine, New Hampshire, New Jersey, New York, Pennsylvania, Vermont, and Wisconsin) and three Canadian provinces (Alberta, Newfoundland, and Ontario). Possible explanations for the occurrence and tenure of the current outbreak in New York are discussed.

Une épidémie persistante du pamphile du pin (Acantholyda erythrocephala (L.)) (Hyménoptère : Pamphiliidae) dans le nord de l'état de New York est sans précédent par sa durée et son étendue. Le pin blanc (Pinus strobus L.) est l'hôte favori dans cette région. Ce qui avait débuté par une infestation de 30 ha par cette mouche à scie introduite en 1981 affectait en 1995 5440 ha de pin blanc répartis sur 231 000 ha dans les comtés de St-Lawrence et de Franklin. La présence de A. erythrocephala a été rapportée dans huit états du nord-est et un état du centre-nord : (Connecticutt, Massachusetts, Maine, New Hampshire, New Jersey, New York, Pennsylvania, Vermont et Wisconsin) et dans trois provinces canadiennes (l'Alberta, Terre-Neuve et l'Ontario). Les auteurs tentent d'expliquer la présence et le déroulement de l'épidémie actuelle qui sévit dans l'état de New York.[Traduit par la Rédaction]

Document Type: Research Article

Publication date: January 1, 2001

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  • Published since 1971, this monthly journal features articles, reviews, notes and commentaries on all aspects of forest science, including biometrics and mensuration, conservation, disturbance, ecology, economics, entomology, fire, genetics, management, operations, pathology, physiology, policy, remote sensing, social science, soil, silviculture, wildlife and wood science, contributed by internationally respected scientists. It also publishes special issues dedicated to a topic of current interest.
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