33 



and the wing cases are reddish-brown (Plate V., Fig. 3). 

 The male is very hairy. The beetles, unlike the two 

 preceding, are active during the day time. They deposit 

 their eggs as the others do, but the grubs only live 

 a year. This is known as the Coch-y-bonddu in Wales. 



PREVENTION AND REMEDIES FOR CHAFERS. 



The rootage of Rose bushes should be examined 

 when signs of unhealthiness are noticeable and the grubs 

 picked out by hand. They may be attracted away from 

 the soil by placing grass turves upside down under the 

 earth where the grubs collect and can then be easily 

 picked out and killed. The Large and Summer Chafers 

 may be collected off the bushes in day time. The 

 Garden Chafer is best sought for when the sun is going 

 down and also the Green Rose Chafer, or on dull days. 

 Nothing but hand picking can be resorted to for these 

 adult Lamellicorns. 



BEES AND SAWFLJES (Hymenoptera) INJURIOUS 

 TO ROSES. 



The only hymenopterous insects which are injurious 

 to Roses are the Leaf-cutting Bees, the Sawflies, and to 

 a very small extent Ants. The latter may be excluded 

 as pests as they are mainly found on the Rose bushes 

 when the latter are infested with Green-fly, and they 

 will be mentioned when dealing with those insects. 



The Rose Leaf-cutting Bee (Megachile centuncularis). 



This bee is frequently very annoying to Rose growers, 

 by the frequent incursions it makes on the foliage, not for 

 feeding purposes, but for taking parts of the leaves 

 bodily away. So persistent are they in attacking certain 

 bushes that they cause almost complete defoliation 

 (Plate V., Fig. 6). 



