328 INJURIOUS INSECTS, WITH TREATMENT 



Treatment. Arsenate of lead in summer to kill larvae of second 

 brood. Lime-sulfur and arsenate of lead in dormant season just 

 before buds open, to destroy hibernating larvae.' 

 CASE-BEAKER (Acrobasis nebulella). A small caterpillar living in- 

 side a case which it carries with it. It attacks the opening buds. 

 Treatment. Arsenate of lead as soon as the buds begin to 

 open. Repeat if necessary. 



BORER (Sesia scituta). A wood-boring caterpillar working in the 

 sapwood. 



Treatment. Digging out. 

 TWIG-GIRDLERS. See under PERSIMMON below. 

 ROSE-BEETLE. See under GRAPE and APPLE, pp. 308, 322. 

 ROUND-HEADED BORER. See under APPLE. 

 SLUG. See under CHERRY, p. 313. 



TWIG-GIRDLER (Oncideres cingulatus) . A brownish-gray beetle, 

 about one-half inch long, which girdles twigs in August and Sep- 

 tember. The female lays eggs above the girdle. The twigs soon 

 fall. 



Remedy. Burn the twigs, either cutting them off or gather- 

 ing them when they fall. 

 TWIG-PRUNER. See under AppLE, p. 309. 

 Persimmon. WHITE PEACH-SCALE (Diaspis pentagona). 



Remedy. Lime-sulfur when the trees are thoroughly dormant. 

 TWIG-GIRDLERS (Oncideres cingulatus and 0. texand) . Dark gray 

 long-horned beetles that girdle the twigs, causing them to drop. 

 Remedy. Pick up and burn fallen twigs in fall and winter. 

 Pineapple. KATYDID (Acanthacara similis). A large katydid which 

 attacks, among other plants, the leaves of the pineapple. 



Remedy. Arsenicals, before the plants are mature. 

 MEALY-BUGS (several species). These mealy white insects attack 

 the plant at the base of the leaves, usually underground. 



Treatment. Set only clean plants, or dip them in resin wash 

 or kerosene emulsion. In the field apply tobacco dust freely in 

 the bud before the bloom begins to appear, or spray with kerosene 

 emulsion. 



RED-SPIDER (Stigmceus fioridanus). Minute mites occurring in 

 great number at the base of the leaf, where they induce rot. 

 Treatment. Tobacco dust applied to bud. 



