86 



AN INTRODUCTION TO ENTOMOLOGY 



A similar study was made of the wings of Conocephalus, as an 

 example of the Locustidse. Figure 98 represents the wings of a male 



nymph ; and 

 Figure 99 the 

 fore wing of 

 an adult. The 

 most striking 

 feature, and 

 one character- 

 istic of the 

 family, is that 

 the musical 

 organ occupies 

 an area near 

 the base of 



the wing which 



Fig. 97. Fore wing of an adult male of (Ecanthus; /, vein : c ' O ii ^^ 

 bearing the file; s, scraper; t,t, tympana. 



pared with 



the area occupied by the musical organs of the Gryllidse. But 

 here, as in the Gryllidas, the file is borne by the basal part of Cu 2 , the 



Fig. 98. Wings of a male nymph of Conocephalus, (From Comstock and 

 Needham). 



tympana are formed between the branches of cubitus, and the scraper 

 is formed at the outer end of the anal area. 



