remedies suitable to its form and habits. In the following list the more 

 prominent and best known species are included, as also representatives of 

 the various classes : 



AjJrides. Several species of " fly " are more or less injurious to trees 

 of the Citrus family, the most prominent and troublesome one being the 

 Orange Aphis (Sipkonophora attrantii). This is a small dark-coloured 

 fly somewhat similar in appearance to the Black Peach Aphis. It chiefly 

 attacks the young shoots and buds, and often causes much injury. 



ORANGE APHIS. 



Winged Female (Magnified). 



Insects (Natural Size) 



Pupa (Magnified) . 



Wingless Female (Magnified). 



Another very troublesome species is Sipltonophura citrifolii, which has 

 proved to be very injurioute in some parts of New South Wales and 

 Queensland. It is somewhat similar to the previously mentioned species 



