EXERCISE 63 (Continued) 



groove between the meso- and metathorax is a slitlike opening (spiracle), one of the breathing pores. 

 Aside from certain inconspicuous basal parts, each leg consists of a femur (or thigh), a tibia, and a 

 tarsus (or foot). 



3. Ten segments are easily counted in the abdomen. The basal segment bears a pair of conspicuous, 

 oval auditory organs, at the front edge of each of which is a spiracle. Each of the following segments 

 bears a pair of lateral spiracles. In the female the abdomen terminates in two pairs of short, pointed 

 organs which constitute the major part of the egg-laying organ (ovipositor) , while in the male the end 

 of the abdomen is rather blunt and bears a pair of short movable plates (claspers). 



4. Make drawings of a grasshopper similar to those shown of the cricket. 



References. Sanderson, E. D., and Jackson, C. F. Elementary Entomology, p. 372. Ginn and Company. 

 Comstock, J. H. Manual for the Study of Insects, p. 701. Comstock Publishing Company. 



THE GRASSHOPPER 



Make drawings of the parts indicated below, similar to the drawings of the cricket. 



1 . Face view : antennae ; compound eyes ; simple eyes ; mouth parts. 



2. Mouth parts: labium; mandible; maxilla; labrum; palpi. 



3. Lateral view of thorax with wings and legs removed: leg and wing attachments; spiracles; 

 intersegmental grooves. 



4. Abdomen, lateral view : ear; spiracles; abdominal segments. 



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