419 



Whitney (L. A.). The small Sweet Potato Weevil— Mthh/. Bull. Slate 

 Cominiss. Hortic, Sacramento, Cal., iv, no. 3, March 1915, pp. 162- 

 164, figs. 24-28. 



Euscepes {CryptorrJujnchus) batatae has been found on tubers imported 

 from Honohihi. It is ahnost impossible to detect its presence from 

 external conditions, as the larvae enter the tuber while very small and 

 the only evidence of their presence would be a slight exudation of gum 

 which is easily brushed off. The only certain method of determining 

 infestation is examination with a knife. The eggs of the weevil are 

 laid on the surface of the sweet potato and the larvae bore into the 

 interior. The larval and pupal stages are passed within the tuber, 

 which gradually decays. 



VosLER (E. J.). Calendar of Insect Pests and Plant Diseases. — Mthly. 

 Bull. State Commiss. Hortic., Sacramento, Cal., iv, no. 3, March 

 1915, pp. 165-169. 



The adults of Fuller's rose beetle {Pantomorus fulleri) feed on the 

 foliage of citrus trees. Eggs are deposited on the bark, and the larvae 

 feed on the roots, the adults crawling up the trunks to attack the leaves. 

 Bands of cotton batting about 4 inches wide placed round the trunk 

 prevent the ascent of the adult. The Diabrotica beetle, also attacking 

 citrus foliage, can be controlled by shaking the tree over a tarred 

 screen, or by spraying with lead arsenate, 5 lb. to 50 gals, water. The 

 larvae of the peach twig borer {Anarsia lineateUa) emerge in early 

 spring and bore into the new shoots. Spraying with lime-sulphur 

 solution, 1 part in 10 parts water, just as the blossoms begin to open, is 

 very effective. This may be followed by a later spraying with lead 

 arsenate, 4 lb. to 50 gals, water. Against the larvae, the most common 

 remedial measure is to cut out the borer with a sharp knife. The 

 resistant Myrobalan cherry plum can be used as a stock upon which 

 the peach is grafted. Hard asphaltum, applied when warm, 5-6 inches 

 below the surface of the soil, has been found useful. In spraying for 

 the codling moth {Cydia pomonella), lead arseiiate, at a strength of 

 5 lb. to 100 gals, water, should be applied when the flower petals are 

 falHng. The brown day moth {Pseudohazis eglanterina) feeds on the 

 leaves of deciduous fruit trees. The eggs are deposited in clusters 

 round the twigs. The larvae, when full gro^\Tl, drop to the ground to 

 pupate. There are several broods in the year. The larvae can be 

 destroyed by lead arsenate, 3 lb. to 50 gals, water. The rose aphis 

 {Macrosiphum rosae), can be coiitrolled by spraying with soap solution 

 or " Black Leaf 40," 1 to 1,000 parts water. The raspberry honitail 

 {Hartigia cressoni) attacks raspberry, blackberry and loganberry. 

 The eggs are inserted in the tips of the shoots ; the larvae, as they 

 burrow outwards, kill the terminal part of the cane. The best control 

 measure is to destroy the eggs by pressure before they hatch ; the 

 shoots will not be injured by this treatment. Cutworms can be killed 

 by a poison bait, composed of 1 lb. Paris green, 50 lb. bran, molasses 

 and water, made into a stiff paste. 



Insect Notes. — Mthhj. Bull. State Commiss. Horiic., Sacramento, Cal, 

 iv. no. 3, March 1915, p. 170. 



The larvae and pupae of Scutellista cyanea, the predaceous egg- 

 parasite of the black scale, Saissetia oleae, Bern., have been found in 



(C180) A 2 



