Entomology 462 Insect Morphology. David J. Shetlar, Ph.D. The “BugDoc”. The Ohio State University, OARDC & OSU Extension Columbus, OH. © October, 2004, D.J. Shetlar, all rights reserved. External Morphology (grasshopper). Antenna. Compound eye. Wing. Abdomen. Head. Thorax.
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David J. Shetlar, Ph.D.
The Ohio State University,
OARDC & OSU Extension
© October, 2004, D.J. Shetlar, all rights reserved
Generalized Diagram (typical of grasshopper)
Caterpillar Digestive System
Milkweed Bug Digestive System
Spiracles, Tracheae, Tracheal Trunks & Air Sacs, Tracheoles
Cana lily skipper (a butterfly) larvae have an almost completely transparent exoskeleton, thereby allowing a good view of the tracheal system.