What do you do when you find a caterpillar?
Furthermore, how do you catch a caterpillar?
If you want to catch and raise monarch caterpillars, the easiest way is to gather caterpillars or eggs from milkweed plants. If you find an egg, pull the leaf off of the plant and place it in a small container lined with a moist paper towel. Each day, sprinkle a few drops of water onto the paper towel.
Similarly, you may ask, what do caterpillars need to survive?
The basics that a caterpillar needs are fresh food from its specific host plant, safety from drowning in water, ventilation, and a safe place to pupate or become a chrysalis. While the caterpillars are eating and growing they will stay on the host plant as long as the food source remains.
Caterpillars do not drink water. They normally obtain sufficient fluids from the food plants that they eat. If you are rearing some species, such as tiger moth caterpillars, it is good to add a few drops of moisture to keep them from drying out too much.