This thesis is a discussion of the major bee diseases
found in Oregon with notes on minor ailments of bees and
on diseases not yet present followed by a history of the
introduction and spread of the more important diseases,
a history of bee legislation in Oregon and a discussion...
This study was conducted to test the performance of
four species of stored grain beetles in competition at
three levels of moisture and temperature. The insects
used in these tests were the granary weevil, the rice
weevil, the saw-toothed grain beetle and the red flour
beetle. The experiments were conducted...
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...