494 



The larvae of wire-worms have been injurious to newly planted potatoes 

 and other root crops near Sacramento during March. The Chryso- 

 melids, Haltica himarginata, Say, and Disonycha quinquevittata, Say, 

 were collected on willow in March in Yolo county. Adults of Eriocam- 

 poides Umacina {Caliroa cerasi), the pear slug, were taken on pear trees 

 near San Jose on 25th March. Hippodamia convergens has been 

 introduced into the Imperial Valley for use against the melon aphis 

 {Aphis i,ossypii). Adults of Tipida simplex were common during the 

 middle of March in Sacramento county. A number of larvae and one 

 pupa of Cydia pomonella were found beneath the bark of apple trees 

 on 11th March, while the trees were still practically dormant. Pseudo- 

 coccus sp. was found in certain vineyards in Fresno county early in 

 March. This species, w^hich caused considerable damage during the 

 past season, passes the early part of the year under the bark of the vine, 

 thus rendering control by spraying of httle use. Cacoecia {Archips) 

 argyrospila, the fruit-tree leaf-roller, is doing considerable damage to 

 pear buds. Twigs infested with the San Jose scale {Aspidiotus 

 perniciosus) have been received from a locality in which a parasite of 

 the scale, Prospaltella perniciosi, was abundant last year. Pseudo- 

 coccus hakeri was taken from apple trees in Yolo county. Colonies 

 of Leptomastix &p., a new Chalcidoid parasite of the mealy bug, have 

 been liberated at Alhambra, San Francisco, Ventura, etc. Tceniothrips 

 pyri has been found in the Sacramento River pear section. Spraying 

 with standard distillate oil emulsion, Black Leaf 40 formula, is being 

 carried on. The grain thrips, FrmiMinieUa {Enthrips) tritici, has been 

 reported on young apricots. Aspidiotus hederae, the ivy scale, has been 

 a serious pest of lemons and oranges in San Diego during the past 

 season. Injury is mainly caused by the insect feeding on the fruit. 

 Eriosoma lanigerum was common near Grass Valley on 11th March. 

 A number of pear trees were undersized and, in many cases, foliage 

 during the previous season had dropped early, owing to infestation 

 of the roots. A Dipterous leaf-miner, probably a Cecidomyid, was 

 recently found on boxwood in a greenhouse at Fresno. The plants 

 were said to have been impoi-ted from England. 



Maskew (F.). Quarantine Division ; Report for the Montli of February 



1915. — Mthly. Bull. Slate Commiss. Hortic, Sacramento, Cal., iv, 

 no. 4, April 1915, pp. 221-222. 



The following pests have been intercepted :— Weevil larvae in sweet 

 potatoes ; Chionaspis citri, Pseudaonidia trilobitiformis, Chrysomphalus 

 aonidum, Lepidosaphes beckii, Parlatoria pergandii, Parlatoria ziziphus 

 and PJiomopsis citri on pomelos ; Lepidosaphes uimi on boxwood ; 

 Diaspis bromeliae and Pseudococcus bromeliae on pineapples ; Coccus 

 longulus on betel leaves ; Pseudococcus sp. on sisal plants ; Aleurodes 

 sp. on Camellia ; Agromyza websteri on wistaria ; Lepidopterous 

 pupae and the Arachnid, Poliaspis pini, on pine trees ; Aulacaspis 

 pentagona on cherry tree ; Lepidosaphes gloveri on limes ; Heterodera 

 radicicola in potatoes ; Aspidiotus cydoniae on bananas ; larvae of 

 Dacus cucurbitae in watermelons ; larvae of Trypetidae in papaya ; 

 Aphis persicae-niger and Aspidiotus perniciosus on peach trees ; 

 Aulacaspis rosae on rose ; Cerataphis lataniae and Chrysomphalus 



