﻿212 POMONA COLLEGE JOURNAL OF ENTOMOLOGY 



Pygidium (Fig. 85 A) — Lobes not very well developed. Alesal serrate 

 and approximate at base, but diverging. The second pair is distinct with 

 inner lobe largest. Of the smaller third pair the same is also true. The fourth 

 pair is not at all distinct and the fifth pair entirely wanting. All of the lobes 

 are markedly serrate. The spines are prominent and distributed as follows ; 

 short one between the mesal and second, but this is longer than the lobes ; one 

 between the second and third; one between the third and fourth and two 

 more on the margin of the pygidium towards the anterior end. These spines 

 are all large. On the abdominal lateral margins are from two to three stout 

 spines. The tubular spinnerets are few in number — six to seven on each 

 side of the anal opening. The circumgenital glands or spinnerets are arranged 

 in the following groups: upper laterals — 19, lower laterals — 24, median — 15. 



I\L\LE Sc.\LE — Resembling that of tlie Hciuichionaspis aspidistrac already 

 figured. It is white, tri-lobed, and about half as long as the female scale. 

 Adult form not obtained. 



Figure 85. Aulacaspis rosae. 



Food plants — Infesting the canes of the Rose, Blackberry, Raspberry, 

 Loganberry ; also the Grape, Strawberry, Myrtle, Pear, Ailanthus, Cycas, 

 Mango, etc. 



Habitat — Common in many parts of this state and particularly harmful 

 to berries in Ventura County. It has also been reported from Europe, Japan, 

 Australia, New Zealand, Hawaiian Islands, Demerara, China, Fiji, Chili, West 

 Indies, Mexico, Canada, New York, Florida, Ohio. 



Treatment — The Blackberry, Raspberry and Loganberry of this county 

 are often greatly damaged by this scale. Working on the canes near the 

 base or even to the crown of the roots as it does, it takes some care in applying 

 remedial measures. Kerosene Emulsion or Distillate sprays are effectual, but 

 1 have found the Crude Carbolic Emulsion more effective upon this insect. 

 Remove the soil to the crown of the roots and apply the spray in the winter 

 when the canes are bare and dormant. Cover with soil after the application 

 so as to keep roots protected. Apply again as often as the scale appears, being 

 careful each time to spray down as far as the scale go on the canes. 



