120 
THE STUD Y OF INSECTS. 
gus) that damages timothy and June-grass very much by 
working in the upper joints. In the early summer the dead 
and yellow heads of grasses thus destroyed may be seen 
everywhere in grass-growing regions. Some species live 
under the bark of trees. The accompanying figure repre¬ 
sents one of these insects very greatly enlarged (Fig. 137). 
Fig. 137.— Thrips. 
Fig. 138.—Mouth-parts of Thrips. (Drawn by J. 
10. 130.—muuui-pansoi / /trips. ^urawn Dy j. 
M. Stedman, under the author's direction.) 8, 
labrum; to, mandible; it, maxilla; 12, labium. 
The insect infesting grapes, called “The Thrips/’ is 
not a Thrips at all, but a leaf-hopper belonging to the 
Homoptera. 
The name Physopoda is from two Greek words : p/iysao , 
to blow up, and pous, a foot. It refers to the curious 
bladder-like feet of these insects. Figure 138 represents the 
mouth-parts of Thrips. 
