ILLUSTRATIONS 



I'l.ATK.'- 



I'iige. 



Platk I. Work 111" the pear Ihrips {Enthrips pyri Daniel). Fig. 1. — Iin})erial 

 prune, showing buds and blossoms injured by feeding of adult 

 thrips. Fig. 2. — Unfolding leaves of Hemskirk apricot injured 

 by young thrip.s. Fig. 3. — Madeline pear, showing cup-.-^haped 

 deformities of the larger and rolling of the smaller leaves, the injury 



cau.sed by young thrips (i 



II. Work of the pear thrijas {Enthrips pyri Daniel). Fig. 1. — Black 

 Tartarian cherry blossoms killed by adult thrips and leaves injured 

 by you;ig thrips. Fig. 2. — Bartlett pear, showing all except very 

 late Ijlassoms dead from thrips and leaves injured by feeding of 

 young thrips (j 



TEXT FKiURES. 



Fig. 1. Euthrips pyri: head and prothorax from side, showing mouth-parts. ... 3 



2. Enthrips pyri: eggs 7 



3. Enthrips pyri: ovipositor and end of abdomen from side .... 7 



4. Enthrips pyri: larva 9 



5. Enthrips pyri: nymph or jmpa JO 



6. Enthrips pyri: adult J ] 



7. A fungus wbich attacks the pear thrips: active fruiting stage on adult 



thri])s, branching mycclia, forming spores 1-3 



8. Resting spores of a fungus found within dead thrips larva 16 



IV 



