\\.\Tn\n \M I'll 





in this respect. Tin. 



10) and (ieometrida- tw<> (segment I 10), while a few ;i trrpillar- 



(Tisc/icriii, Limacodcs) have none. I 

 saw Hit- I enthredinida-) have MA en <>r ei^ht 

 pairs of abdominal le.t^s and larva' .l 

 Panorpida-, ei^ht pairs. Not 

 OUS larva- ( >>nie ( Yrambycida-, II \pcrn) 

 have abdominal tubercles that reproenl 



but are incompletely developed as comp 



with those of Lepidoptera. 



The legless, or apodous, condition occurs 

 frequently among larvae and always in correla- 

 tion with a sedentary mode of life; as in the 

 larva; of many Cerambycidae, almost all Rhyn- 

 chophora, a few Lepidoptera, all Diptera, and FIG. 65. Foot of honey bee, 



,, TT ^ ., j. .j . . . Apis mellif era. c.c,c\ws;p, 



all Hymenoptera except Tenthredimdae, Sinci- puiviiius; /'-/, tarsai seg- 

 dffi, and other Terebrantia. ments.-After CHESHIRE. 



Among adult insects, female scale insects are exceptional in being 

 legless. 



Walking. An adult insect, when walking, normally uses its legs in 

 two sets of three each; thus the front and hind legs of one side and the 



FIG. 66. Caterpillar of Protoparce sexta. Natural size. 



middle leg of the other move forward almost simultaneously though 

 not quite, for the front leg moves a little before the middle one, which, 

 in turn, precedes the hind leg. During these movements the body is 

 supported by the other three legs, as on a tripod. The front leg, 

 having been extended and its claws fixed, pulls the body forward by 



