HAIRY CATERPILLARS EATING THE LEAVES 



181 



The pupal sta^o is passed in the soil. The only means of control avail- 

 able is deep fall plowing. 



Rose Slugs 



Three species of " slugs," the larvae of sawflies, commonly infest the 

 foliage of roses in this country. The surface of the leaves may be 

 skeletonized, as with the native American species, Endelomyia rosce 

 Harr, ; or holes may be eaten in the leaves, as with an imported species, 

 the Bristly Rose Slug, Cladius pecti- 

 nicornis Fourer ; or the larva may 

 attack the edge of the leaf, eating 

 out large sections, as with another 

 imported species, the Coiled Rose 

 Slug, Emphjtus cinctus L. 



Either arsenate of lead or Paris 

 green will readily poison the slugs. 

 Or, they may be dislodged by a fig. 215. — The Yellow-bear Cater- 

 strong stream of water. pillar. Original. 



The Yellow-bear Caterpillar {Diacrisia virginica Fab.) 



Rather large and hairy caterpillars attack the leaves of a great 

 variety of vegetables as well as many kinds of weeds. Usually they 



are not abundant enough 

 to do serious injury. A full- 

 grown cat(Tpillar is 2 inches 

 long. Th(^ hairs arise in 

 tufts on the l)ack and sides, 

 and vary from light yellow 

 to brown. The adult is a 

 light-colored moth, expand- 

 ing 1| to If inches, marked 

 with a few small dark 

 dots. There are two gen- 

 erations, the second lot of 

 caterpillars appearing in August or September. 



Hand picking will suffice to control this insect when present in moder- 



FlG. 21G. — Adult of the Yellow-bear Cater- 

 pillar, Original, 



