IV. INSECTA: UEXAPODA, NEUB.OPTERA. 



481 



of chirps per minute. The females may readily be recognized by the ovi- 

 positor. AcridiiDjE ; antennae and ovipositor short ; tympani abdomi- 



FiG. 509.— Locwsfa caudata. (After von Wattenwyii.) /, ovipositor. 



nal. Acridium* ; Melanoplus* (31. sjj/ctiis, the 'grasshopper' which 

 did such damage in the Missouri River States in 1873-75); Qidipoda* ; 

 Tettix* LocusTlDiE ; antennae long; tympani on first tibiae ; ovipositor 

 long, flattened ; tarsi four-jointed. Hadeiitecus* wingless, blind, in caves; 

 Conocephalus* ; Cyrtop'hilus''' and Microeentru^n, katydids; Artabrus* 

 wingless. Gryllid^, Crickets : antonnse long ; ovipositor long, cylindri- 

 cal ; tarsi three-jointed ; tympani on first tibia. Oryllus* ; (Ecanthus* 

 tree crickets ; Qryllotalpa,* mole crickets, burrowing. 



Order IV. Neuroptera. 



The Neuroptera closely parallel the Archiptera, and the two 

 were formerly united, since they have the same wmg structure and 



Fig. h]().~M</rinelfo forniicariit.^. (From Schmarda.) /, iinago; C', larva; .?, pupa in it.s 



cocoon. 



show in general appearance great similaritiies. Thr;s the ant lions 

 (fig. 510) recall the dragon flies; the Chrysopinte, the Perlidas. 

 The Neuroptera, however, are holometabolous and have a resting 

 stage, although the j^upaa (pupa3 libera?) are capable of some mo- 

 tion. The mouth parts are for biting, and i)\ some the labium has 

 no notcli in tlie middle. 



