B. Species or Genera
| Characters of Species | Common Name | Groups |
|---|---|---|
| Large size, brown color | American cockroach | Cockroaches |
| Small size, pale brown | "Croton bug" | |
| Dark color, often wingless | Oriental cockroach | |
| Body long, anterior portion slender | Mantis or rear horse | Mantis |
| Long body, long legs, no wings | Walking stick | Walking sticks |
| Very large size, wings very small | Lubber grasshopper | Short-horned grasshoppers |
| Small to medium size, legs marked with red | Red-legged grasshopper | |
| Large size, greenish brown color | Differential locust | |
| Medium to large size, sand color (gray) | Carolina locusts | |
| Rather large, green, wings large and angled | Angle-wing katydid | Long-horned grasshoppers |
| Small to rather large, usually green | Meadow grasshopper | |
| Wingless, brown color | Cricket grasshopper | |
| Usually rather large, black | Field cricket | Crickets |
| Wingless, front legs shovel-shaped | Mole cricket |
5. THE DRAGON FLY
An Insect adapted to Aerial Life
Materials.
Mounted specimens of dragon flies, some moist preserved specimens, living specimens if practicable, simple lenses.
Observations.
- Identify the three regions of the body and note the presence of a distinct neck. What is the length of the insect? What is its general form? If you have living specimens, discover what movements the head and abdomen are capable of making.
- What is the position and general character of the wings? Explain how these wings are made very efficient for flying. Why should they not fold?
- For what do the legs seem best adapted? Why?
- Note the size of the eyes and of the antennæ? How do you account for the great size of the eyes and the relatively small antennæ?
- What is the type of mouth parts, biting or sucking? If you have living dragon flies, try feeding them flies or mosquitoes and note how they are seized.
- The food of dragon flies is mosquitoes and flies caught while on the wing. In what various ways is the dragon fly specialized for getting food in this manner?