262 



Aspidiotus perniciosus, Comst. (San Jose scale) has five or six 

 generations annually in Georgia. The host frequently dies as the 

 result of attack, but the author beheves that death is due rather to the 

 effect of poisons introduced by the insect than to the amount of sap 

 \vithdrawn in feeding. Two applications of lime-sulphur spray are 

 recommended for the control of this scale. 



Conotrachelus nenuphar, Herbst (plum curculio) attacks peach, 

 plum and other fruit trees in Georgia. Hibernation occurs in the adult 

 stage among grass, etc., in and near orchards. Egg- laying continues 

 throughout the summer, the eggs being deposited in a specially pre- 

 pared cavity in the fruit. The incubation period is about five days, 

 and the larva becomes mature in three weeks. Pupation takes place 

 in the soil at a depth of 3 inches or less. The adult emerges in about 

 three weeks and feeds on leaves and fruit until hibernation. Treatment 

 for this insect should include three sprayings for mid-season varieties, 

 the first, consisting of f lb. lead arsenate and 3 lb. lime to 50 gals, 

 water, applied as soon as the petals have fallen, the second, consisting 

 of self -boiled lime-sulphur and ^ lb. lead arsenate powder, applied three 

 weeks later, and a third similar to the second, given a month before 

 the ripening period. For early varieties two sprays are sufficient, 

 while a fourth spray should be added for late-ripening fruit. 



Scolytus Tugulosus, Ratz. (shot-hole borer) confines its attacks to 

 unhealthy trees. Hibernation takes place in both larval and pupal stages. 

 Adults emerge in March or later, and deposit eggs in holes in the bark. 

 The egg stage lasts three days, the larval three weeks, and the pupal 

 one week ; there are several generations each year. [See this Review, 

 Ser. A, ii, p. 432.] 



Eulecanium nigrofasciatum, Perg. (terrapin scale) occurs in middle 

 and south Georgia and at intervals causes severe injury. The female 

 hibernates in a state of partial development and reaches maturity in 

 the following spring. The eggs hatch in late April or early May, and 

 the larvae become temporarily fixed to the leaves. Fertilisation takes 

 place from four to eight weeks later, when the partially developed 

 females migrate to the woody parts of the tree. Eulecanium {Lecanium) 

 jjersicae is occasionally present to an injurious extent in the middle and 

 lower parts of the State. The hfe-history is similar to that of E. nigro- 

 fasciatum. Soluble oil preparations, such as Scalecide, apphed in 

 spring just before the buds open, at a dilution of 1 to 15, are the most 

 satisfactory materials for destroying these scales. 



The fungus and Nematode pests of peaches are also described and 

 the method of manufacturing hme-sulphur concentrates is given. 



Woods (W. C). Blueberry Insects in Maine. — Maine Agric. Expt. 

 Sta., Orono, Bull. no. 244, December 1915, pp. 249-288, 3 figs., 

 4 plates. [Received 2nd May 1916.] 



Three species of blueberries occur in Maine, namely Vaccinium 

 pennsylvanicum. Lam., V. canadense, Kalm, and V. vacillans, Kalm. 

 The plants are attacked by several insects. Ehagoletis pomonella, 

 Walsh (apple maggot) is restricted to the barrens of Washington 

 County. Adults begin to appear in the middle of July ; egg-laying 

 has been observed during August, when the incubation period is two 

 or three days. The average duration of the larval stage in the berry 



