346 AN INTRODUCTION TO ENTOMOLOGY 



tudinal vein; the membrane of the wings is not clothed with micro- 

 scopic hairs. This suborder includes a single family. 



Family PHLCEOTHRIPID^ 



The members of this family are, as a rule, considerably larger and 

 more powerfully formed than the Terebrantia, some of them being 

 the giants of the order. They live usually in secluded places, as be- 

 tween the parts of composite flowers, under the bark of trees, on the 

 underside of foliage, in galls, moss, turf, fungi, etc. Their movements 

 are very deliberate and they never run or spring (Hinds '02). 



Nearly as many species and genera of this family have been found 

 in this country as of the other suborder; but this family appears to 

 be of much less economic importance than is the Thripidse. One 

 species, Aleurddothripsfasciapennis, which is common in Florida, feeds 

 on the eggs, larvae, and pup^ of the citrus white fly, Dialeurodes citri. 



