Most insects are herbivores 50 B Herbivores are found in most major orders 1

Most insects are herbivores 50 b herbivores are found

This preview shows page 11 - 25 out of 25 pages.

Most insects are herbivores (50%) B. Herbivores are found in most major orders 1. Orthoptera (grasshoppers) 2. Hemiptera (true bugs, aphids, planthoppers) 3. Thysanoptera (thrips) 4. Diptera (flies) 5. Lepidoptera (butterflies and moths) 6. Coleoptera (beetles) 7. Hymenoptera (woodwasps, gall wasps, ants)
Image of page 11
What insects do for a living: phytophages II. Parts of plants fed on or in by insects A. Flowers B. Fruits C. Seeds D. Leaves E. Stems and trunks F. Roots G. Sap
Image of page 12
Pollinators Evolution of flowering plants. Excellent video “Sexual Encounters of a Floral Kind.”
Image of page 13
What insects do for a living: phytophages III. Types of feeding A. External feeders (exposed): defoliators, suckers, skeletonizers B. External feeders (protected): leaf rollers, case bearers, root feeders C. Internal feeders : gall formers, miners, borers
Image of page 14
White grubs (beetle larvae)
Image of page 15
White grub transforms to beetle adult
Image of page 16
Dead trees Rhinoceros beetle
Image of page 17
Thrips feeding on apple leaf Note: fringed wings
Image of page 18
Aphid – feeding externally piercing-sucking mouthparts Caterpillar - skeletonizer Chewing mouthparts Caterpillars defoliators Chewing mouthparts
Image of page 19
Leafminer - fly Grasshopper - defoliator Larva Adult
Image of page 20
Wormy apple - codling moth
Image of page 21
Tree borer – clear wing moth Galls caused by flies Caterpillar boring in corn stalk Pupa
Image of page 22