Evidence of pheromonal constancy among sexual and asexual females in a population of fall cankerworm,Alsophila pometaria (Lepidoptera: Geometridae)

1987 ◽  
Vol 13 (8) ◽  
pp. 1823-1831 ◽  
Author(s):  
C. Mitter ◽  
J. A. Klun
Keyword(s):  
Fall Cankerworm

A Note on the Association of Fall Cankerworm (Alsophila pometaria (Harr.)) with Winter Moth (Operophtera brumata (Linn.)) (Lepidoptera: Geometridae)

1958 ◽  
Vol 90 (9) ◽  
pp. 538-540 ◽  
Author(s):  
C. C. Smith
Keyword(s):  
Tree Species ◽  
Life Histories ◽  
Quercus Rubra ◽  
Acer Platanoides ◽  
Operophtera Brumata ◽  
Ulmus Americana ◽  
Winter Moth ◽  
The Third ◽  
Norway Maple ◽  
Fall Cankerworm

The fall cankerworm, Alsophila pometaria (Harr.), and the winter moth, Operophtera brumata (Linn.), both feed to a great extent on the same tree species and prefer apple, Malus spp., red oak, Quercus rubra L., basswood, Tilia spp., white elm, Ulmus americana L., and Norway maple, Acer platanoides L. They also have similar life-histories and habits (Smith 1950 and 1953). Both lay their eggs on the trees in the fall and overwinter in this stage. The eggs hatch about the same time and the larvae of (both species mature about the third week in June. They drop to the ground and form cocoons at a depth of about an inch. The adults emerge about the same time, commencing usually during the last week in October and continuing until early December or until the ground freezes.

Re-evaluating fall cankerworm management thresholds for urban and suburban forests

2016 ◽  
Vol 18 (2) ◽  
pp. 145-150 ◽  
Author(s):  
Jonathan A. Walter ◽  
Frank T. Finch ◽  
Derek M. Johnson
Keyword(s):  
Fall Cankerworm ◽  
Suburban Forests

scholarly journals An Assessment Of Tree Banding Techniques To Capture Cankerworm Defoliators Of Elm And Ash Trees In Winnipeg, Manitoba, Canada

2006 ◽  
Vol 32 (1) ◽  
pp. 10-17
Author(s):  
Kerienne La France ◽  
A. Richard Westwood
Keyword(s):  
North America ◽  
Tree Species ◽  
Tree Mortality ◽  
Upward Movement ◽  
Urban Street ◽  
Tree Defoliation ◽  
Significant Difference ◽  
Ash Trees ◽  
Fall Cankerworm ◽  
Capture Rates

Fall cankerworm (Alsophila pometaria L.) and spring cankerworm (Paleacrita vernata Peck) are widely distributed across North America. The larvae feed on the leaves of several species of urban street trees, and repeated severe defoliation can cause a reduction in growth and may contribute to tree mortality. This study examined the effectiveness of Tanglefoot-covered tree bands and the Bug Barrier Tree Band in preventing the upward movement of female cankerworms on the trunk by comparing capture rates of adult moths. There were no significant differences among tree species in the number of A. pometaria adults caught, while P. vernata showed a preference for elm (Ulmus spp.) over ash (Fraxinus spp.). Up to 25% of female moths crossed the Bug Barrier Tree Band, and up to 20% of females crossed the Tanglefoot-covered bands in three experiments in 2002 and 2003. There was no significant difference between the two band types in the proportion of females crossing bands. Larval populations were not large enough to determine the effect of the bands on reducing tree defoliation. The Bug Barrier Tree Band was easier to install and remove than the Tanglefoot-covered bands and required considerably less clean-up afterward.

A geographic comparison of pseudogamous populations of the fall cankerworm (Alsophila pometaria)

1987 ◽  
Vol 43 (2) ◽  
pp. 133-143 ◽  
Author(s):  
C. Mitter ◽  
J. W. Neal ◽  
K. M. Gott ◽  
E. Silverfine
Keyword(s):  
Fall Cankerworm ◽  
Geographic Comparison

Sequential Sampling for Larvae of the Winter Moth, Operophtera brumata (Linn.). (Lepidoptera: Geometridae)

1956 ◽  
Vol 88 (6) ◽  
pp. 241-246 ◽  
Author(s):  
W. A. Reeks
Keyword(s):  
Life Histories ◽  
Sequential Sampling ◽  
Maritime Provinces ◽  
Operophtera Brumata ◽  
Larval Population ◽  
Winter Moth ◽  
Fall Cankerworm ◽  
South Shore ◽  
Population Counts ◽  
The Relationship

The Forest Insect Survey of the Maritime Provinces has been observing an outbreak of the winter moth, Operophtera brumata (Linn.), since its discovery in Nova Scotia in 1949. In addition to noting annual changes in distribution, the Survey has made population counts on 8 to 20 tagged trees of red oak, Quercus rubra L., at each of seven locations along the south shore of the Province. These trees were sampled each year to show the abundance of larvae of the winter moth and the fall cankerworm, Alsophila pometaria (Harr.). Both species are commonly found on the same trees, and their life histories are similar. The collections and subsequent rearings also showed the degree of parasitism by native or introduced species of parasites. The defoliation of the trees was estimated at the time of sampling and again at the end of the feeding period to determine the relationship between larval population and defoliation. Some of the sampling data, which were collected from 1952 to 1955, are used to develap the sequential plan of sampling described herein. Use of the plan at the sampling stations should reduce the number of samples while retaining accuracy within predetermined limits.

PARASITOIDS OF A LOOPER COMPLEX (LEPIDOPTERA: GEOMETRIDAE) IN WEST VIRGINIA

1990 ◽  
Vol 122 (5) ◽  
pp. 1041-1043 ◽  
Author(s):  
Linda Butler
Keyword(s):  
West Virginia ◽  
Hardwood Forests ◽  
Fall Cankerworm ◽  
Study Sites

From 1981 to 1984, a “looper” complex was responsible for the defoliation of approximately 648 000 ha of hardwood forests in several counties of eastern West Virginia. The complex consisted primarily of four species of Geometridae (Lepidoptera) with larval composition at three study sites in 1983 ranging from 77 to 94% for the half-wing geometer, Phigalia titea (Cramer); 2-13% for the linden looper, Erannis tiliaria (Harris); 8% for Phigalia strigataria (Minot); and 1–2% for the fall cankerworm, Alsophila pometaria (Harris) (Butler 1985a, 1985b, 1986).

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