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12 TEACHERS' MANUAL.
Q.—Describe the characteristics by which True Caterpillars
are known, also those by which False Caterpillars are known ?
Q.—What are the legs attached to the thoracic segments
termed; also those attached to the abdominal segments ?
Q.—What are the legs attached to the anal segment termed ?
Q.—What figures represent the pro leg of a Caterpillar ?
Q.—Describe a pro-leg ?
Q.—What common name is given to Caterpillars having only
four, six, or eight pro-legs ?
Q.—From what do they derive their name ? A.—From
their mode of locomotion.
Q.—When larvae are destitute of legs and apparently headless,
what are they termed ?
Q.—Name the examples given ?
Q.—In what state or stage of life do insects increase in size ?
Q.—What are larvae termed which have only six legs, and to
what kind of insects do they belong ?
Q.—Describe the example given ?
Q.—Do Butterflies or any other insects increase in size after
their wings and other members have acquired their proper
form and degree of firmness ?
[The pupil should be taught the difference between the proleg
of a True Caterpillar, having from ten to sixteen legs, and
that of a False Caterpillar, having twenty or twenty-two legs,
the former having a hook on the tip, the latter having none.]
Q.—What is meant by dorsum ; venter ; piliferous ; tubercle
; thorax ; abdomen ; spiracle ?
Fig. 41—a, larva; b, pupa; c, perfect insect.
Fig. 42—Larva of Thrip, (natural size, one twenty-eighth of an inch in length).
Fig. 43—e, egg; b, larva; a, pupa.
Fig. 52—Cut-worm and joint showing piliferous spots, enlarged.
Fig. 60—a, a, a, larva; b, enlarged joint of body showing black tubercles.