BIOL 371 Lecture Notes - Lecture 18: Entognatha, Luehea, Thysanura
Document Summary
Except for the entognatha, they have 2 pairs of wings (not jointed) Collected the rainfall of insects that fell down. Of the 1200 species of beetles he found about 160s are found specifically on. Agriculturally they are the main enemy of farmers and gardeners. Storage pest that live in grain storages (25% loss of food) Malaria- 1/3 pop in lifetime zitra virus- microcephaly connection. Proboscis of butterflies and moth developed as a tube for sucking. Digestion and absorption in the mid gut, then goes through the intestine, and then to the rectum, and then excretion. Rectum is used to reabsorption of water resulting in very dry excretions. Smaller the animal the larger the sa to water ratio, so they need more water. Most of them use their legs for walking. Wings have veins that contain blood, tracteae, and nerves. Distort the shape of the thorax to make the wings move. Down stroke of the wing is induced by longitudinal muscles.
