332 INSECTS 



by Mr E. E. Green as occurring on a species of Adiantum introduced 

 from Fiji. Mr Brittin states: "I am rather doubtful as to whether 

 this is imported or not." 



Lepidosaphes pinnaformis, Bouche {Mytilaspis citricola, Packard). 

 Lemon Scale ; Purple Scale 



In 1889 this scale insect was found on the rind of some oranges 

 forwarded to Mr Maskell from Inangahua ; the oranges came originally 

 from Fiji. In 1895-96 it was found on lemons imported from Portugal. 

 In the report of the Department of Agriculture for 1909 the species 

 is reported as occurring among lemon trees in New Zealand. 



Lepidosaphes ultni, Linn. {Mytilaspis pomorum, Bouche). 

 Apple Scale 



Probably introduced very much earlier, but first recorded by 

 Mr Maskell in 1878, when it was quite common in New Zealand. 

 It is a most abundant, and extremely destructive species. While 

 chiefly attacking apple trees, it is stated by Mr Maskell to occur on 

 pears, hawthorn, walnut, plum, peach, apricot, lilac, Cotoneaster, 

 sycamore, ash, and many other plants. According to Dr Hilgendorf 

 this pest has been tending to disappear during the last ten years 

 in North Canterbury, but from natural (unknown) causes. A very 

 minute white acarid (mite) has been observed among the eggs of 

 this scale insect. 



Lepidosaphes nullipara, Froggart 



Mr Brittin informs me that he has found this species very plenti- 

 fully in North Otago, on Eucalyptus, wattle and walnut. It has 

 probably been introduced from Australia. It may be easily mistaken 

 for L. ulmi. 



Aspidiotus aurantii, Maskell {A. coccineus, Gennadius). 

 Red Scale of Orange 



In 1878 Mr Maskell reported this species as occurring on orange 

 and lemon trees, growing at Governor's Bay, near Lyttelton. It 

 occurs, he says, in immense numbers on the oranges and lemons sold 

 in our shops, and which are imported from Sydney. It was also 

 reported from Auckland. 



The Agricultural Department report for 1909 speaks of "the 

 immense quantities of scale-infested Citrus fruits which both Australia 

 and Italy have for years poured into the Dominion." Energetic 

 measures are taken, however, to arrest the introduction and spread 

 of the pest. 



