427 



QuiNN (G.). The Orange in South Australia.— JZ. Dejpt. Agric, South 

 Australia, Adelaide, xix, no. 11, June 1916, pp. 967-980. 

 [Received 17th August 1916.] 



The most serious pests of orange trees in South Australia are the 

 scale-insects Chryso7nphalus (Aspidiotus) aurantii, Mask., and Saissetia 

 {Lecanium) oleae, Bernh. The former species can be controlled with 

 kerosene emulsion, resin wash or hydrocyanic acid gas. If fumigation 

 is used, 1 oz. potassium cyanide and 1 oz. sulphuric acid should be 

 allowed for every 100 cubic feet enclosed, and treatment should con- 

 tinue for not less than 45 minutes. ;S. oleae occurs chiefly on dense, 

 strongly growing trees. Such trees should be thinned out and sprayed 

 with kerosene or oil emulsion. The orange aphis attacking young 

 shoots in spring may be destroyed by the use of kerosene emulsion or 

 tobacco and soap wash. This Aphid is usually controlled by a parasitic 

 Ichneumonid. Injury to leaves and twigs of young trees by the 

 weevil, Otiorrhynchus cribricollis, may be prevented by placing a band 

 of woolly sheep skin round the trunk of the tree or by spraving with 

 lead arsenate solution at the rate of 1 lb. lead arsenate paste to 8 gals, 

 water. 



Maskew (F.). Quarantine Division ; Report for the Month of May 



1916. — Mthly. Bull. Cal. State Comyniss. Hortic, Sacramento, v, 

 no. 7, July 1916, pp. 270-272. 



The following insect pests were intercepted : — From Australia : 

 A Coccid on Kentia palm. From the Azores : Lepidosaphes beckii and 

 Pseudococcus sp. on lemons. From British Columbia : Chionaspis 

 pinifoliae on a conifer. From Central America : Aspidiotus 

 (■yanophylli, A. palmae, Pseudococcits sp., and Chrysomphalus scutiformis 

 on bananas. From China : Phomopsis citri on pomelos ; weevil larvae 

 in sweet potatoes, and Aidacaspis rosae on an unknown plant. From 

 Hawaii : Diaspis hromeliae, Pseudococcus bromeliae, and Saissetia sp. 

 on pineapple, Coccus longulus on betel leaves, Cylas formicarius in 

 sweet potatoes, and Tr}^etid larvae in mangoes. From Japan : weevil 

 larvae in sweet potatoes, and Ceroplastes ruhens on camellia. From 

 New Jersey : Cerataphis lataniae on palms ; and Pseudococcus sp., 

 Pulvinaria sp., Chrysomphalus aonidum and the weevil, Ampeloglypler 

 sp., on orchids. From Oregon : larvae of Epochra canadensis in 

 gooseberries, and Aleurodes sp. on ornamental plants. From Alabama : 

 Pseudococcus sp. on Coleus. From Arizona : weevil larvae in acorns. 

 From Cuba : Pseudococcus bromeliae on pineapple. From lUinois : 

 Pseudococcus sp. on Coleus. From Massachusetts : Euthrips sp. on 

 lemon trees. From Mexico : Chloridea obsoleta on tomatoes, and 

 Lepidosaphes gloveri on oranges. From New York : Pseudococcus 

 sp. and Aphids on gardenias. From Ohio : Orthezia insignis on 

 Strobilanthus dyerianus ; and Pseudoccocus sp., Saissetia hemisphaerica, 

 and Coccus hesperidum on crotons. From Pennsylvania : Aphids on 

 chrysanthemum plants ; Pseudococcus sp. on roses, and ChrysompJialus 

 aonidum on Ulies. From Wisconsin : Pseudococcus adonidum 

 {longispinus) and Coccus hesperidum on crotons. 



(C311) b2 



