TETTIGID.'E OF NORTH AMERICA 



COLORS CLEARLY MARKED. 



After the last ecdysis the colors are most vivid and clean. 

 How long the Tettigid can continue living in its adult life is 

 not known, but certainly we know it can live as long as two 

 years, and it is not improbable it lives much longer. After a 

 year the markings usually become of duller hue, and some- 

 times the body becomes tinged greenish from the attachment 

 of a lichen growth to the surface. 



The first ecdysis takes place in about ten days;* the insect 

 then may be quite differently colored from the stage just 

 preceding, or may carry onward the same coloration, the same 

 being true of the markings. This applies to all the different 

 stages. 



FIRST ECDYSIS OF TETTIGIDS. 



We might suspect the process about to take place by the 

 quiet actions of the insects on the ground, grass-stem, or other 



Fig. 5. Larva of Teitix ohscunis, fmir millimeters in length, after the 

 second ecdysis, a and /' lateral and dorsal aspects of body. 

 Note the absence of elytral sinus. 



low plant upon which they climb. Granting we are looking 

 at a larva on the ground, the insect is seen to attach its feet 



* The females grow much faster and are bulkier than the males. This rapidity of growth 

 is^to^a great extent dependent on the food eaten, and in turn the nutrition exerts an 

 influence on the period of ecdysis. 



