GREENHOUSE PLANTS INSECTS 133 



The OBLIQUE-BANDED LEAF-ROLLER ^ (ArcIupS 



rosace ana) 

 Order — Lepidoptera 



The light-brown moth has three, more or less, 

 dark-brown, broad oblique bands on each wing; she 

 deposits her yellowish-green eggs in patches on 

 the leaves; they hatch in 8 to 12 days and the green 

 caterpillars eat the leaves and petals and buds of 

 the rose and become grown in 3 to 6 weeks; each 

 caterpillar pupates for two weeks in a folded leaf; 

 there are at least two generations a season. 



Control — Hand-pick larvae; spraying with ar- 

 senate of lead, 2 pounds to 50 gallons of water, has 

 given good results where the plants were not too 

 crowded. 



The ROSE midge ^ (Dasynetira rhodophaga) 

 Order — Diptera 



The mosquito-like midge lays its eggs just under 

 the sepals of the flower buds or between the leaves 

 of the leaf buds; they hatch in 2 days and the 

 maggots suck the sap from the petals and leaves 

 and become grown in from 5 to 7 days; they 

 then go into the ground and pupate in tiny silken 

 cocoons; the whole life cycle is passed in 12 to 16 

 days. 



Control — In latter part of October cover 

 ground all over in rose benches with tobacco dust 

 ^ to J4 inch in depth; this will kill the maggots as 

 they try to enter ground; fumigate house every 

 night for two weeks and then every other night for 

 a week with nicotine paper or nico-f ume ; spray dirt 

 walks with 5% kerosene emulsion. 



6^ 7^ 8 Davis— 27th Rept. 111. State Ent, p. 98- 

 9 Sasscer and Borden— U. S. Bu. Ent, Bull. 778. 



