Wisconsin Pesticide Applicator Test for Private Greenhouses and Nurseries 2023

Arachnid features - ANSWER--four pairs of legs -two body regions (thorax and abdomen) -no wings Insect features - ANSWER--wings -three pairs of legs -antennae -three body regions (head, thorax, abdomen) Chewing mouthparts - ANSWER-tearing damage, notched/ragged leaves, holes in fruit and seeds, girdled stems, chewed-off roots (grasshoppers, caterpillars, beetles) Piercing-sucking mouthparts - ANSWER-yellowed leaves, galls, misshapen fruit, transmitting diseases (plant bugs, aphids, leafhoppers) Simple metamorphosis - ANSWER-egg, nymph, adult Complete metamorphosis - ANSWER-egg, larva, pupa, adult Explain why it is important to know what kind of metamorphosis a particular pest goes through - ANSWER--in complete metamorphosis, larvae and adults live and feed in different habitats and eat different things How does temperature affect insect development? - ANSWER-determines -activity level -rate of development -reproduction (need optimal temperature range) How does humidity affect insect development? - ANSWER--increased humidity increases disease (esp fungal) -need moisture for body (temperature-humidity interactions have greater effects than either alone) Mites - ANSWER--egg- 6 leg larvae - 8 leg nymph - adult -sucking mouthparts Aphids - ANSWER--sucking mouthparts -occur in colonies Scale - ANSWER--can produce coverings that make them appear not insects/alive -soft-bodied