HEMIPTERA 331 



Siphonaphora roses, Reaum. Rose Fly 



This pest has long been known in the country, and apparently 

 is common everywhere. 



Siphonophora gr anuria, Kirby 

 This species is also widespread throughout New Zealand. 



Mystis cerasi, Fabr. Black Aphis ; Black Fly 



This pest has been known in New Zealand since the early fifties, 

 and appears to be common throughout the Dominion. It particularly 

 attacks peach, cherry and plum trees, making its appearance in the 

 early spring, and doing most damage when the trees are in bloom, 

 and the foliage and fruit are young. 



Family CocciDiE 



The nomenclature of this family has recently undergone a com- 

 plete revision, and I am indebted to Mr Guy Brittin of Christchurch 

 for a correct list of the species. As, however, most fruit growers only 

 know the names which appear in Maskell's papers, and in the publica- 

 tions of the Agricultural Department, I have retained these in paren- 

 theses for the sake of reference. 



Aulacaspis rosce, Sandberg {Diaspis rosce) 

 This species, which attacks rosaceous plants — roses, blackberries, 

 raspberries, etc. — has been reported from Canterbury and Hawke's 

 Bay. It was first recorded by Maskell in 1878. 



Diaspis boisduvalii, Signoret 

 This scale has been found on various species of wattles (Acacia), 

 and on some hot-house plants. It was also recorded by Maskell in 1878. 



Chionaspis citri, Comstock 

 Originally imported from America, this destructive insect is found 

 on species oi Citrus in the north of New Zealand ; it is also commonly 

 introduced on oranges from Sydney. 



Chionaspis dubia, Maskell 

 Originally described by Mr Maskell in 1881, who stated that it 

 was common on many plants, Coprosma, Rubus, Asplenium, etc. In 

 re-describing it in 1887, he added Pellaa to the plants on which it 

 feeds, and gave Canterbury and Auckland as habitats. In 1891 a 

 small form of it was taken at Reefton on leaves of Leptospermum, and 

 at Wellington on Asplenium and Cyaihodes. In 1915 it was reported 



