310 INJURIOUS INSECTS, WITH TREATMENT 



WOOLLY APHIS (Schizoneura lanigerd) . Small reddish-brown plant- 

 lice covered with a conspicuous mass of white, waxy fibers, found 

 on the branches, sprouts, trunks, and roots. 

 Preventive. Do not set infested trees. 



Treatment. For the form above ground drench the infested 

 parts with 15 per cent kerosene emulsion ; for the underground 

 form remove the earth beneath the tree to a depth of 3 inches, 

 and apply 10 per cent kerosene emulsion liberally, and replace 

 the earth. In the case of nursery stock the emulsion may be applied 

 in a shallow furrow close to the row. 

 Apricot. PEAR TWIG-BEETLE. See under PEAR, p. 326. 

 PIN-HOLE BORER. See BARK-BEETLE under PEACH, p. 325. 

 PLUM-CURCULIO. See under PLUM, p. 329. 



BROWN APRICOT-SCALE (Eulecanium armeniacum). A soft brown 

 scale infesting the under side of the smaller branches. 



Treatment. Spray with resin and fish-oil compound, taking 

 care to hit the underside of the twigs. In California the applica- 

 tion should be made in January and February. 



Asparagus. COMMON ASPARAGUS-BEETLE (Crioceris asparagi). 

 Beetle, less than one-fourth inch in length, yellow, red, and shin- 

 ing black, with conspicuous ornamentation, feeding upon the 

 tender shoots. Larva feeds upon the leaves and tender bark. 



Treatment. Freshly slaked lime dusted on before the dew 

 has disappeared in the morning. Poultry. Cut down all plants 

 in early spring to force the beetles to deposit their eggs upon the 

 new shoots, which are then cut every few days before the eggs 

 hatch ; or leave a row or so around the field as a lure for the 

 beetles where they may be killed with arsenicals. 

 THE TWELVE-SPOTTED ASPARAGUS-BEETLE (Crioceris 12-punctata}. 

 Similar to the last, but with twelve spots on the wing- 

 covers. 



Treatment. Similar to that used above, except that the grubs 

 cannot be destroyed by lime, since they live within the berry. 

 ASPARAGUS MINER (Agromyza simplex). A maggot mining under 

 the skin near the base of the plant. 



Treatment. Leave a few volunteer plants as a trap in which 

 the fly will deposit her eggs. Pull and burn these plants in late 

 June and early July. 



