REPORT OF STATE ENTOMOLOGIST 1899 



579 



14 English oyster scale (Aspidiotus ostreaeformis). 

 Resembles San Jose scale in appearance and like it infests fruit trees. 

 Occurs in several localities in this state and should be guarded against. 



Treatment : spray infested -trees with kerosene emulsion or whale oil 

 soap solution. Fumigate with gas. 



15 Putnam's scale (Aspidiotus ancylus). Resembles the 

 two preceding species, but is less injurious. Attacks various trees. 



Treatment : same as preceding. 



SMALL FRUIT AND VINE INSECTS 



1 6 Currant worm (Pteronus ribesii). Greenish, black- 

 dotted saw fly larvae feeding on currant leaves in May, the common 

 currant worm. 



Treatment : spray with hellebore or poison. 



17 Currant span worm (Diastictis ribearia). Yellowish, 

 black-dotted span worms feeding on leaves in May and June. 



Treatment : spraying with poison, or handpicking. 



18 Currant stem borers (Sesia tipuliformis, Janus 

 integer, Tenthredo rufopectus). The caterpillars boring 

 in the woody stems are sesians. The maggots working in the tender 

 tips may be either those of Janus or Tenthredo. 



Treatment : burn stems infested with sesians and the wilting tips 

 infested by the others. 



19 Raspberry gouty gall beetle (xAgrilus ruficollis). 

 Irregular swellings on canes are produced by larvae of this pest. 



Treatment : cut and burn infested canes during winter or early spring. 



20 Light-loving grape vine beetle (Anomala lucicola). 

 Brownish or black beetles about in. long, resembling a small June 

 beetle. 



Treatment : dust vines with lime. Collect and destroy beetles. 



2 1 Spotted grape vine beetle (Pelidnota punctata). 

 Brown, black-spotted beetles about 1 in. long, resembling a June beetle. 



Treatment : handpicking. 



22 Grape vine flea beetle (Haltica chalybea). Greenish 

 or blue beetles about }i in. long, feeding on buds, or brownish, black 

 dotted larvae about *4 in- long, skeletonizing leaves. 



Treatment : spray with poison, using a large amount on buds, less for 

 young on leaves. 



