ILLUSTRATIONS 



PLATES. 



Plate I. Work of the pear thrips {Euthrips pyri Daniel). Fig. 1. — Imperial 

 prune, showing buds and blossoms injured by feeding of adult 

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

 by young thrips. Fig. 3. — Madeline pear, showing cup-shaped 

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



caused by young thrips (> 



II. Work of the pear thnps .{Euthri ps pyri Daniel). Fig. 1. — Black 

 Tartarian cherry blossoms killed by adult thrips and leaves injured 

 by young thrips. Fig. 2. — Bartlett pear, showing all except very 

 late blossoms dead from thrips and leaves injured by feeding of 

 young thrips (> 



TEXT FIGURES. 



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



2. Euthrips pyri: eggs 7 



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



4. Euthrips pyri: larva 9 



5. Euthrips pyri: nymph or pupa , 10 



6. Euthrips pyri: adult 11 



7. Clcflosporium sp., a fungus which attacks the pear thrips: active fruit- 



ing stage on adult thrips, branching mycelia, forming spores 15 



8. ( 'hidnsporium sp.: resting spores within dead thrips larva Ki 



IV 



