HOW TO KNOW THE IMMATURE INSECTS 



15a. Antennae inserted high on side of head, about the position of the 

 upper half of the eye. Fig. 368 Family LYGAEIDAE 



About 2,000 species are de- 

 scribed. Most of them are de- 

 structive to crops: the chinch 

 bug, Blissus leucopterous (Say), 

 and the false chinch bugs, Nys- 

 ius spp. are serious pests. 

 Some species belonging to the 

 genus, Geocoiis are predacious 

 on other injurious insects. 



Fig. 368. Chinch bug, Blissus leucopter- 

 ous (Soy): a-e, 1st to 5th instars; f, 

 adult; g, eggs. 



15b. Antennae inserted low on side of head, about the position of the 

 lower half of the eyes. Fig. 369 Family COREIDAE 



About 1,000 species have been de- 

 scribed. They are destructive to crops. 

 The squash bug, Anasa iristis (DeGeer) 

 is very injurious to pumpkins, melons, 

 gourds and squashes. The nymphs are 

 often associated with the adults. 



Fig. 369. a, Leptocorixa vori- 



cornis Fab., 5th (last) instar; 

 b, Squash bug, Anasa tristis (De 

 Geer). 



16a. Body spinous; meso- and metapleuron fused into a single piece. 

 Fig. 370 Family TINGITIDAE 



About 700 species of lace bugs have been de- 

 scribed. They are plant feeders. The eggs are 

 laid in the plant tissues and the young are 

 spinous. Look on the underside of leaves for 

 them. 



Fig. 370. Corythucho 

 orcuata (Say). 



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