9. What kind of metamorphosis has the grasshopper? _Drawings suggested._ a. Side view with the legs and wings removed. Label all parts shown in this drawing. (See Definitions on pages 23 and 24 for names of parts.) b. Face view of the head, showing the simple and compound eyes, the antennæ, labrum, and palps. c. One of the third pair of legs. Label parts. d. A fore and a hind wing arranged in natural position. e. A young grasshopper. 3. COMPARATIVE STUDY OF ORTHOPTERA _Materials._ Mounted specimens of various common species of orthoptera. _Observations._ 1. Where does the insect live? What is its color? 2. What is the size and shape as compared with the grasshopper? 3. What is the length of the antennæ as compared with the length of the body? 4. To what kind of locomotion are the legs adapted? How? Are the forelegs specially adapted for grasping? 5. What is the position of the wings when at rest? Are they large or small as compared with the size of the body? 6. Are the ovipositors long or short? (Compare with those of the grasshopper.) 7. Find the group to which the insect belongs and its name by the key in the following section. 4. KEY TO SOME COMMON ORTHOPTERA A. Groups ============================================================================= LEGS |ANTENNÆ| OTHER CHARACTERS | GROUPS -----------------+-----------------------------------------+----------------- Similar, fitted | Long | Body flattened, wings folded on | Cockroaches for running | | dorsal surface of the abdomen | (_Blattidæ_) -----------------+-------+---------------------------------+----------------- First pair of | Rather| Prothorax long and slender, | Mantis legs enlarged | long | wings folded on dorsal | (_Mantidæ_) for grasping | | surface of abdomen | -----------------+-------+---------------------------------+----------------- Similar, fitted | | Body usually greatly elongated | Walking stick for walking | Long | and stick-like, usually no | (_Phasmidæ_) | | wings | -----------------+-------+---------------------------------+----------------- Hind legs fitted | | Body somewhat compressed, | Short-horned for jumping | Short | wings folded on side of | grasshoppers | | abdomen | (_Acrididæ_) |-------+---------------------------------+----------------- | | Body compressed, wings folded | Long-horned | Long | on sides, tarsus four-jointed | grasshoppers | | | (_Locustidæ_) |-------+---------------------------------+----------------- | | Body somewhat flattened, wings | Crickets