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Biology of the yellowjacket parasitoid Bareogonalos canadensis (Harrington) (Hymenoptera: Trigonalyidae)

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Title Biology of the yellowjacket parasitoid Bareogonalos canadensis (Harrington) (Hymenoptera: Trigonalyidae)
Names Carmean, David (creator)
Miller, Jeffrey C. (advisor)
Date Issued 1988-10-11 (iso8601)
Note Graduation date: 1989
Abstract The known biology of Bareogonalos canadensis
(Harrington) is based on literature records of six
collections from three areas in the Pacific Northwest.
The objective of this study was to obtain fundamental
knowledge on the biology of B. canadensis, especially
its distribution, abundance, and host species, as well
as its potential for biological control of
yellowjackets. This was accomplished by analyzing
yellowjacket colonies from the Willamette Valley and the
adjacent Coast Range forest.
In 1986 and 1987 B. canadensis was found in 50 of
89 yellowjacket colonies collected from the Coast Range
foothills of Oregon bordering the Willamette Valley. No
B. canadensis were found in 103 colonies collected in
the Willamette Valley. The parasitoid was reared from
colonies of Vespula vulgaris (L.), V. Densylvanica
(Saussure), V. atropilosa (Sladen) (new host record), V.
consobrina (Saussure) (new host record), and
Dolichovespula arenaria (F.), but was absent in nests of
D. maculata (L.). Significant control of nests or
worker populations was not shown. Females were found to
oviposit primarily in Douglas-fir needles [Pseudotsuga
menziesii (Mirb.) Franco] but also in other foliage
including western hemlock [Tsuga heterophylla (Raf.)
Sarg.], huckleberry (Vaccinium parvifolium Smith), and
snowberry [Symphoricarpos albus (L.) Blake]. They did
not oviposit in leaves of grass (Poa sp.), cultivated
bean (Phaseolus vulgaris L.), or pitch pine (Pinus
resinosa Ait). All collections of this parasitoid came
from areas with Douglas-fir.
The taxonomic history of the Trigonalyidae is
presented. It was shown that the holotype of B.
canadensis had its labels switched with an autotype, and
another autotype is mislabeled as the holotype. A note
on the yellowjacket parasitoid Sphecophaga vesparum
burra (Cresson), and a list of trigonalyid species,
hosts, and distribution are given as appendices.
Genre Thesis/Dissertation
Topic Trigonalidae
Identifier http://hdl.handle.net/1957/40503

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