112 



both alone and with nicotine was very successful. Orchard experi- 

 ments with lime-sulphur, 1:9, both alone and combined with Black 

 leaf 40, 1 : 500, gave good results in killing eggs of A. avenae and A. sorbi 

 when the spray was applied as the buds started to swell ; Scalecide, 

 1 : 15, applied at the same time did not give a satisfactory result 

 against A. sorbi. Carbolic acid and substances containing phenol 

 derivatives give some promise of becoming important agents in the 

 control of Aphid eggs. Crude carbolic acid in strengths up to 5 per 

 cent, acid will not injure young or old apple trees in a dormant 

 condition. Miscible oils containing phenol derivatives show a higher 

 toxic action than those without. 



Felt (E. P.). Asphondylia websteri, sp. n. — Jl. Econ. Entom.., Concord^ 

 N.H., X, no. 6, December 1917, p. 562. 



The alfalfa gall midge, Asphondylia websteri, sp. n., which has 

 formerly been treated as identical with the European species, A. tniki, 

 is here described. 



Herms (W. B.). The Indian Meal Moth, Plodia interpundella, Hubn., 

 in Candy and Notes on Its Life-History. — Jl. Econ. Entom., 

 Concord, N.H., x, no. 6, December 1917, p. 563. 



The larvae of Plodia inter punctella, Hb., were found in San 

 Francisco infesting chocolate-coated marshmallow confectionery stored 

 in pasteboard boxes, the eggs evidently having been laid just before 

 packing or before the boxes were closed. Adults were reared from 

 these larvae and the life-history studied. Eggs were laid at night 

 directly on the sweets, and hatched in about two days. The young 

 larvae ate small pits in the sweets and gradually disappeared within, 

 maturing rapidly during a feeding period of some 4 weeks. Fully 

 grown larvae leave the sweets and crawl into corners or crevices where 

 they pass a prepupal period of 9 to 12 days, during which time they 

 spin a crude web in which pupation takes place. The pupal period 

 requires from 10 to 14 days under temperature conditions of 66° to 

 72° F., or 24 to 28 days under room temperatures of 60° to 68° F. 

 The life-cycle therefore occupies some 40 days at warm temperatures 

 and the insect may be of considerable importance to makers of 

 confectionery. 



Benson (A. H.). Citrus QuMme.— Queensland Agric. Jl, Brisbane, 

 viii, no. 5, November 1917, pp. 253-258. 



The great value of spraying in citrus culture is emphasised, especially 

 when carried out thoroughly, at the right time and with the right 

 materials. The usual lead arsenate spray against biting insects, and 

 contact sprays for scale-insects are recommended, a 1 in 40 red oil spray 

 as the insects are hatching being more efficacious than a 1 in 20 when 

 the scales are fully matured. The young scales may also be destroyed 

 with a weak solution of lime-sulphur (1 part standard solution to 

 30-35 parts water). This remedy is also very valuable for the 

 destruction of spinning and other mites, such as the red spider 

 \Tetranychus telarius], the Bryobia mite [Bryobia jyretiosa] and the 

 Maori mite, which are killed by the fumes of sulphur given off by the 

 spray. 



