Hostname: page-component-848d4c4894-tn8tq Total loading time: 0 Render date: 2024-06-15T11:20:27.258Z Has data issue: false hasContentIssue false
  • English
  • Français

AN OUTBREAK OF A SAWFLY, PAMPHILIUS PHYLLISAE (HYMENOPTERA: PAMPHILIIDAE), ON NORTHERN RED OAK, WITH NOTES ON LARVAL MORPHOLOGY

Published online by Cambridge University Press:  31 May 2012

D. C. Eidt  and
J. O. Nichols
D. C. Eidt
Affiliation:
Forest Research Laboratory, Department of Fisheries and Forestry, Fredericton, New Brunswick
J. O. Nichols
Affiliation:
Department of Forests and Waters, Commonwealth of Pennsylvania, Harrisburg
Get access Rights & Permissions [Opens in a new window]

Abstract

An outbreak of a sawfly, Pamphilius phyllisae Middlekauff, was discovered on northern red oak at Linn Run State Park, Pennsylvania, in 1964. The outbreak was unusual and probably unique because this previously unknown species suddenly attained populations of over 1 million ultimate instar larvae per acre. The reasons for the outbreak are not known but it arose near the end of a period of abnormally low precipitation and at a time when nearly complete encapsulation of parasites by the sawfly larvae was observed. The insect is confined to northern red oak, Quercus rubra L., and has a life cycle of 1, 2, or more years of which about 6 weeks are spent on the host tree. The life history, the history of the infestation, and the immature stages are described.

Type
Articles
Information
The Canadian Entomologist , Volume 102 , Issue 1 , January 1970 , pp. 53 - 63
Copyright
Copyright © Entomological Society of Canada 1970

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Benson, R. B. 1951. Hymenoptera (Symphyta). Handbooks for the identification of British insects. Vol. 6, Part 2 (a). Royal Entomological Society of London.Google Scholar
Chambers, V. H. 1952. The natural history of some Pamphilius species (Hym., Pamphiliidae). Trans. Soc. Br. Ent. 11: 125–140.Google Scholar
Eidt, D. C. 1969. The life histories, distribution, and immature forms of the North American sawflies of the genus Cephalcia Panzer (Hymenoptera, Pamphiliidae). Mem. ent. Soc. Can., No. 59.CrossRefGoogle Scholar
Heqvist, K.-J. 1956. Studier över större granspinnarstekeln (Cephalcia abietis L.) och dess uppträdande i Skåne. Meddn St. SkogsforskInst. 46(5): 1–54.Google Scholar
Kalandra, A. 1963. Ein Beitrag zur Gradologie der Fichtengespinst-blattwespe Cephalcia abietis L. im Adlergebirge in den Jahren 1950–1960. Commun. Inst. for. Csl. 3: 45–52.Google Scholar
Kalandra, A. 1965. Příspěvek k průběhu gradace ploskohřbetky smrkové (Cephalcia abietis L.) v polesí Sedlonov u Náchoda v letech 1952–1960. Lesn. čas 9: 15–22.Google Scholar
Lorenz, H., and Kraus, M.. 1957. Die Larvalsystematik der Blattwespen. Altademie-Verlag, Berlin.Google Scholar
Middlekauff, W. W. 1940. The nearctic sawflies of the genus Neurotoma (Hymenoptera, Pamphiliidae). Can. Ent. 72: 201–206.CrossRefGoogle Scholar
Middlekauff, W. W. 1958. The North American sawflies of the genera Acantholyda, Cephalcia, and Neurotoma (Hymenoptera, Pamphiliidae). Univ. Calif. Publs Ent. 14: 51–168.Google Scholar
Middlekauff, W. W. 1964. The North American sawflies of the genus Pamphilius (Hymenoptera: Pamphiliidae). Univ. Calif. Pubb Ent. 38: 1–80.Google Scholar
Nichols, J. O. 1968. Oak mortality in Pennsylvania — a ten-year study. J. For. 66: 681–694.Google Scholar
Salt, G. 1963. The defence reactions of insects to metazoan parasites. Parasitology 53: 527–642.CrossRefGoogle ScholarPubMed
Stritt, W. 1935. Beiträge zur Biologie der Blattwespen-Gattung Pamphilius Latr. (Hym., Tenthr.). Verh. Naturw. Ver. Karlsruhe 31: 137–152.Google Scholar