THE INSECT: ITS EXTERNAL STRUCTURE 



11 



of insects. There is a tendency in some groups, carried farthest in the 

 higher Hymenoptera, for the first segment of the abdomen to consohdate 

 more closely with the metathorax than with the second abdominal seg- 



FiG. 17. — Different forms of insect legs. A, Cicindela sexyultata Fab. (beetle) ; B, 

 Nemohius fascialus De G. (cricket) hind leg; C, Stagomantis Carolina L. (Mantis) fore leg; 

 D, Pelocoris fnnoralus P. B. (carnivorous bug) fore leg; E, GryUotalpa borcalis Burm. 

 (mole cricket) fore leg; F. Canthon IcBvis Dru. (a digging beetle) fore leg; G, Phanceus 

 carnifex L. (a digging beetle) fore tibia and tarsus of female; H, same, fore tibia of male; 

 /, Dytiscus fasciventria Say, male (water beetle) fore leg; C, coxa; /, femur; s, spine; t, 

 trochanter; tb, tibia; <s, tarsus. {From Folsom.) 



ment, which in such cases is often slender and gives thereby a semi- 

 detached appearance to the rest of the abdomen, as though the line of 

 division between thorax and abdomen were at that place instead of 



