SCALE-INSECTS. 43 



Adult male very small, brown or yellow in colour. The 

 antennae have ten joints : the two first joints are very small, 

 round, and smooth ; the third, fourth, fifth, and sixth equal in 

 length ; the seventh, eighth, and ninth half as long ; the tenth 

 somewhat shorter still, and pointed. All the last eight joints 

 show numerous hairs. The thorax is short and thick, the 

 thoracic band occupying more than one-half the width; the 

 abdomen short, the double spike of some length. The wings are 

 oval, about as long as the body. The legs are hairy, femora 

 thick, tibiae longer, thicker at the end next the tarsus than at 

 the other end ; tarsi broad at the top, tapering gradually down 

 to the usual single claw. The hairs on the femora are much 

 fewer than those on the tibiie and tarsi. 



Habitat On oranges and lemons in shops, very abundant, 

 often several hundreds on a single fruit ; on orange- and lemon- 

 trees, Governor's Bay, Canterbury; and Auckland. 



This insect is European, and has been introduced here from 

 Australia. It is exceedingly destructive to orange arid lemon 

 groves in America and Australia. Mr. Comstock (Report of the 

 Entomologist, U.S. Dep. of Agric., 1881, p. 295) records an in- 

 stance where a grove of thirty-three acres, which in 1872 pro- 

 duced a rental of 1,800, could fetch in 1878 only =120, on 

 account of the ravages of this insect. 



Orange- and lemon-growers in the north of New Zealand 

 should beware of this pest. It is scarcely likely that it should 

 be harmless here when it is so destructive elsewhere. 



The remedies most likely to be efficacious have been men- 

 tioned in the introductory chapters of this work. 



6. ASPIDIOTUS DYSOXYLI, Maskell. 



N.Z. Trans., Vol. XI., 1878, p. 198. 



Female puparium circular, somewhat convex, brown in 

 colour ; diameter, about -^-in. 



Male puparium smaller, oval, brown. 



Adult female bright-yellow, corrugated, the corrugations- 

 overlapping the abdominal region, which is comparatively small. 

 There are four groups of spinnerets, the upper pair with ten 

 openings, the lower with nine, many scattered oval and oblong 

 spinnerets. The abdomen ends in six lobes, of which only the 

 two median are conspicuous ; between the lobes fine serrated 

 hairs. The abdomen is very velvety. 



