How to Collect Moth Larvae

Not all moths are nondescript little brown insects. Many species are large and colorful, with equally bright caterpillars. The bigger moths in the United States include the garden tiger moth and dozens of species of sphinx and hawk moth. Such moths make a suitable subject for a science project on insect life cycles, or just to keep as a pet. Bear in mind that some moths, even the dramatic, colorful ones, are agricultural pests. Do not release any home-reared moths into the wild unless you are certain they are native to your area and not a pest. Depending on the moth you wish to rear, moth eggs and larvae are available from biological suppliers. You can also find many species in local gardens or parks.

Things You'll Need

  • Artist's paintbrush or cosmetic brush
  • Glass jar
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Instructions

    • 1

      Determine which species of moth you wish to rear. If it is a local species, investigate what the caterpillars look like, what time of year they are active and which plants they eat. Moth caterpillars vary dramatically in appearance. Some are brightly colored and furry, while others are a subdued brown or green. If the moth is an exotic species, or a domestic one like the silkmoth, check online for listings of biological or educational suppliers. They will send you eggs to hatch at home, or newly hatched larvae.

    • 2

      Locate the host plants in your area and check them for the moth caterpillars. Some caterpillars hide from predators on the undersides of leaves, so examine all parts of the host plant carefully.

    • 3

      Brush the caterpillars into the jar. Collect several leaves from the host plant for the caterpillars to eat, and make a mental note of its location for future supplies.