Observations on <i>Eriocampa ovata</i> L. (Hymenoptera: Tenthredinidae) infesting red alder in southwestern British Columbia

Authors

  • J. H. Borden Pestology Centre Department of Biological Sciences Simon Fraser University Burnaby, B.C.
  • W. F. Dean Pestology Centre Department of Biological Sciences Simon Fraser University Burnaby, B.C.

Keywords:

<i>Eriocampa ovata</i>, Hymenoptera, Tenthredinidae, red alder

Abstract

As in Quebec, <i>Eriocampa ovata</i> L. in British Columbia is bivoltine, parthenogenetic and overwinters as a prepupa. Unlike <i>E. ovata</i> in Quebec, the first instar larvae emerge on the lower side of the leaf, and pass through 6 or 7 rather than 5 or 6 larval instars. Defoliation characteristically leaves only the midrib and main secondary veins. In limited areas, small trees may be completely defoliated.

References

Bouchard, P. 1960. La tenthrede a thorax rouge de I'aulne, Eriocampa ovata (L) (Hymenoptera: Tenthredinidae). Ann. Soc. Ent. Que. 6:69-80.

Bridgeman, J.B. 1878. On parthenogenesis in the Tenthredinidae. The Ent. 11:191-192.

Raizenne, H. 1957. Forest sawflies of southern Ontario and their parasites. Can. Dept. Agric. Publ. No. 1009.

Ross, H.H. 1951. p.61. In: C.F.W. Musebeck and K.V. Krombein, Hymenoptera of America north of Mexico, U.S. Dept. Agric., Agric. Mon. No.2.

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Published

2019-08-28

Issue

Vol. 68 (1971): Journal of the Entomological Society of British Columbia

Section

Articles

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