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Habits of the Greenhouse White Fly 



short pair anterior to the vasiform orifice ; a dorsal short pair in the 

 first abdominal segment. 



Fig. 12. Antenna. 



Fi2. 13. Dorsal view of vasiform orifice. 



Fig. 14. Lateral view of hind end. 



histar II (Fig. 15). 



This (and all stages previous to the imago) emerges from the 

 anterior end of the old larval skin by pushing it off, partly with the 

 aid of its short stumpy legs, but mainly by the flexure and alternate 

 contraction and expansion of the abdomen. The eyes are bright 

 red, and divided. When newly moulted, the larva flattens itself 

 against the leaf, and, being transparent, is very difficult to see. It 

 is a pale greenish-yellow in colour, with a length of from 0-37 to 



