Journal of Entomological Science (2001) 36, 214-217

Waheed Ibrahim Bajwa and M.T. AIiNiazee (2001)
A survey of spiders in apple trees in the Willamette Valley of Oregon
Journal of Entomological Science 36 (2), 214-217
Abstract: A four-year survey was conducted in one abandoned and two highly managed apple orchards in Oregon, U.S.A. to investigate the fauna of predator spiders, regarded as natural enemies of plant-feeding mites, scales, aphids and lepidoptera. 1,144 specimens, representing 12 families, 26 genera and 30 identifiable species were collected. The most common sepcies were: Metaphidippus aeneolus (22%), Spirembolus mundus (14%), Cheiracanthium inclusum (13%), Philodromus spectabilis (8%), Eris marginata (6%), and Theridion lawrencei (5%).
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): Waheed Bajwa

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
surveys/distribution/isolation
population dynamics/epizootiology

---

Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
Pelegrina aeneola (predator)			U.S.A. (NW)
Cheiracanthium inclusum (predator)			U.S.A. (NW)
Spirembolus mundus (predator)			U.S.A. (NW)
Philodromus spectabilis (predator)			U.S.A. (NW)
Eris marginata (predator)			U.S.A. (NW)
Theridion lawrencei (predator)			U.S.A. (NW)