18 



PESTS OF COFFEE 



moves sideways apparently working the proboscis some- 

 what Hke a drill. When part of it has thus penetrated 

 the tissues, the hng completes the process by gently cm'v- 



4^5 ^^;S^^ §TTss5TT5e®irre76 



t 



Text-FictTjee 4. 



Charts showing the production of joiuig by two coffee gioeu hng(<. Explanation 

 of ohartB as for Text-Figure 8. 



ing the abdomen downwards and upwards, probably so as 

 to make the thoracic portion tense. This has apparently 

 the oi^ect of bringing the buccal apparatus more at right 



