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 J 



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 1 



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

 species, Aleurodothripsfasciapennis, which is common in Florida, feeds j 



on the eggs, larvae, and pupas of the citrus white fiy, Dialeurodes citri. ^ 



