The external and internal morphology are considered and important morphological characters are found which relate Macrovelis to the family Mesoveliidae. Both macropterous and Brachypterous forms occur throughout the western half of the United States. The adults and nymphs are restricted to the margins of springs and streams during the reproductive...
The purpose of this study was to determine what insect species
occurred in waste water facilities at Corvallis, Oregon, and to
correlate these species with the chemical, physical, and biological
features common to these facilities. Data collected on a routine
basis included dissolved oxygen, temperature, algal density, and
insect population...
The insect fauna of a small second order intermittent stream
near Corvallis, Benton County, Oregon was studied. The species
composition was determined, attempts were made to monitor migration
to the stream, qualitative and quantitative benthos samples were
taken, emergence was sampled, the dry stream bed was examined
for forms of...
