18 



AN INTRODUCTION TO ENTOMOLOGY 



CLASS PAUROPODA 

 The Pauropods 



The members of this class are small arthropods in which the head is 

 distinct, and the segments of the body form a single continuous region. 

 Most of the body-segments bear each a single pair of legs. Although 

 most of the terga of the body-segments are usually fused in couples, the 

 legs are not grouped in double pairs as in the Diplopoda, The antenna 

 are branched. The reproductive organs open in the third segment back 

 of the head. 



The Pauropoda or pauropods are minute creatures, the described 

 species measuring only about one twenty-fifth inch in length, more 

 or less. They resemble centipedes in the elongated form of the body 

 and in the fact that the legs are not grouped in double pairs as in the 

 Diplopoda, although the terga of the body-region are usually fused in 



couples. These characteris- 

 tics are well-shown by the 



dorsal and ventral views of 



Pauropus (Fig. 22 and 23). 

 Although the pauropods 



resemble the chilopods in 



the distribution of their legs, 



they differ widely in the 



position of the openings of 



the reproductive organs. 



These open in the third seg- 

 ment back of the head ; that 



of the female is single, those 



of the male are double. 

 The head is distinct from 



the body-region. It bears 



one pair of antennae and two 



pairs of jaws; the eyes are 



absent but there is an eye- 

 Fig. 22. A pauropod, like spot on each side of the Fig. 23. Pauropus 

 Pauropus huxleyi, dor- head (pie 24.} The first huxleyi, ventral as- 

 sal aspect (After Ken- pect (After Lub- 



yon). pair of jaws are large, one- bock). 



jointed mandibles; the 

 second pair are short pear-shaped organs. Between these two pairs 



