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Overview of Oregon river drainage basins. This is a partial listing of rivers in the state of Oregon, United States.This list of Oregon rivers is organized alphabetically and by tributary structure.
Many species of wasp, including especially the cuckoo or jewel wasps (Chrysididae), are kleptoparasites, laying their eggs in the nests of other wasp species to exploit their parental care. Most such species attack hosts that provide provisions for their immature stages (such as paralyzed prey items), and they either consume the provisions ...
The Oregon slender salamander (Batrachoseps wrightorum) is a species of salamander in the family Plethodontidae. The Oregon slender salamander is endemic to the Northwestern United States. [14] Its natural habitat is temperate forests of moist Douglas fir, maple, and red cedar woodlands in Oregon, to 3,000 feet (910 m). [14]
Malheur River; Marys River (Oregon) McKenzie River (Oregon) Miami River (Oregon) Middle Fork Coquille River; Middle Fork John Day River; Middle Fork Owyhee River; Middle Fork Rogue River; Middle Fork Willamette River; Middle Santiam River; Mill Creek (Marion County, Oregon) Mill Creek (Mohawk River tributary) Miller Creek (Klamath County, Oregon)
Face of a southern yellowjacket (Vespula squamosa)Yellowjackets may be confused with other wasps, such as hornets and paper wasps such as Polistes dominula.A typical yellowjacket worker is about 12 mm (0.47 in) long, with alternating bands on the abdomen; the queen is larger, about 19 mm (0.75 in) long (the different patterns on their abdomens help separate various species).
Sphex pensylvanicus is a large, black wasp, significantly larger than their congener Sphex ichneumoneus (the great golden digger wasp). [6] Males are smaller than females, at only 19–28 mm (0.7–1.1 in) long compared with typical female sizes of 25–34 mm (1.0–1.3 in). [2]
The western meadowlark is Oregon's state bird. The North American beaver is Oregon's state mammal. One way of presenting the fauna of Oregon is classification by lifezone. Oregon is a vastly diverse state in terms of topography and climate. Five of the seven recognized lifezones are identified in Oregon. [1]
Orussus abietinus; Narew river near Pułtusk, Poland. The Orussidae or the parasitic wood wasps represent a small family of sawflies ("Symphyta"). Currently, about 93 extant and four fossil species are known. [2]