How To Study Living Animals


THE LIVING BUTTERFLY OR MOTH
Materials.

Individual specimens in large jars or cages, and other specimens in cages with foliage; simple lenses and a needle or pin herunterladen.

Observations.

Butterflies may generally be distinguished from moths by their habit of holding their wings together above them when at rest, by the feelers which are knobbed at the end, and by the rather slender abdomen herunterladen. Moths generally either fold their wings or hold them outstretched, their feelers are not knobbed, and their bodies are rather bulky.

Observe these points in your specimen and the colors of the upper and under sides of the wings microsoft office kostenlos downloaden vollversion deutsch chip. Find the large eyes and examine them with a lens. With the needle or pin carefully uncoil the sucking tube which you may find under the head between two shields. Note the fuzziness of the body and the “dust” which covers the wings. Examine some of this dust under a lens.

Questions.

1. Is your specimen a butterfly or a moth? Prove your statement. If possible, give the name of your specimen.

2. Write a description of your specimen—its size, general color, and special color pattern.

3. Describe the sucking tube, or “proboscis,” and name some flowers from which it might obtain nectar. Try to find out how the tube is operated.

4. Why is it that moths and butterflies never bite? Do they sting? How do you think they protect themselves from enemies?

5. State how the fuzz and dust on your specimen might influence a bird’s liking for it.

6. Contrast the size and usefulness of the wings of the butterfly with those of some other insect you know about; contrast their legs; state how development of one set of structures may cause another set to be simple or feeble.

7. Most moths are active by night. What explanation can you give for their large eyes and expanded feelers? Feelers of insects may be for any or all of the following: touch, taste, smell, and hearing.

Suggested drawings.

a. The butterfly or moth.

b. An antenna (feeler).