431 



\R.A.E., A, vi, 352-356 ; vii, 434-435]. The first two arc usually iu 

 the pupal state in the pods when the beans are harvested, while in the 

 case of P. gonagra the eggs usually hatch about the time the beans are 

 stored, almost all the damage being done in the warehouse, while the 

 larva rarely finds enough food in a single bean, as do the others, but 

 devours two or three before it reaches full growth. All these Bruchids 

 are attacked by an egg-parasite, Uscana semifmnipennis. In the case 

 ot P. gonagra 70-90 per cent, of the eggs are parasitised, infestation 

 of the other species being rather less, probably because they often 

 oviposit in clumps in which some eggs are protected from attack. 

 A larval parasite, Heterospilus prosopidis, infests the two species of 

 B ruckus, but is irregular in its attacks. 



Remedial measures in the warehouse may prevent the damage done 

 by P. gonagra, and the spread of the other Bruchids. Heating is not 

 possible in practice owing to the cost ; but fumigation, either in the 

 public fumigating rooms at Honolulu or in others similarly constructed, 

 is suggested. 



In the field, where most of the damage by B. prosopis and B. sallaei 

 is done, there seems no means of reaching the injury except by the 

 introduction of natural enemies. Both the Bruchids in question occur 

 in the south-western United States, and larval parasites may be found 

 there, while some species of fossorial wasps of the genus Cerceris 

 may be found to serve as an enemy of the adults. 



Plodia inter punctella attacks many kinds of stored food, and breeds 

 in considerable numbers in algaroba warehouses. The eggs are laid 

 on the bags, and the caterpillars feed on the sugary pith inside the pods. 

 Cocoons are made in crevices on the surface of the bag or elsewhere. 

 While the caterpillars are crawling about in search of hiding places for 

 making their cocoons they are attacked by red fire ants, a small 

 predaceous bug, and a Hymenopterous parasite which deposits its 

 eggs on them. 



The best remedial measure is to heat or fumigate the bags after use, 

 as infestation of new beans sometimes takes place because the cater- 

 pillars or pupae have been sent out with the bags, and escaped destruc- 

 tion in handling. 



Ehrhorn (E. M.). Division of Plant Inspection. — Hawaiian Forester 

 and Agriculturist, Honolulu, xxii, no. 6, June 1920, pp. 174-175. 



The pests intercepted during April included weevils in a package of 

 chestnuts from Japan : mites in tree seeds from Java ; moth larvae in 

 herbs from China ; Aphids on an undetermined plant, and mealy-bugs 

 [Pseudococcus] on orchids, from California ; pineapple mite [Stigmaeus 

 floridamis] from Guatemala, and pineapple weevil [Metamasius ritchiei] 

 and mealy-bug from Mexico, on pineapple suckers. 



RoDDA (T. E.). Woolly-Aphis Control. — New Zealand Jl. Agric, 

 Welliiigton, xx, no. 6, 21st June 1920, pp. 372-374. 



Experiments to control woolly aphis [Eriosoina kmigerujn] show that 



I the best results are obtained by spraying with oil (1 : 10) heated to 120° 



'[F.] during the dormant period ; this also proved most effective against 



red mite [Tetrani/chus]. Oil (1:1) heated to 120° [F.] and painted on 



the trees proved fairly effective. Crude vaseline was very effective 



