-2- 



Garden webworms are green worms with black spots that can be found feeding 

 in alfalfa, where they strip the leaves and web them together. In severe infesta- 

 tions, new seedings of alfalfa may be killed. If the worms are numerous and damaging 

 plants, apply 1 l/2 pounds of carbaryl (Sevin) per acre. There is no waiting period 

 for carbaryl. 



Face flies increased in numbers on pastured cattle this past week in the 

 northern half of the state. A continued build-up can be expected for the next three 

 or four weeks. 



To control face flies on pastured dairy cattle, apply 1 to 2 ounces of 

 2.0$ Ciodrin as often as needed. For pastured beef cattle, use 5.0$ toxaphene in oil 

 in a head oiler or back oiler. Allow 28 days to elapse between treatment with toxa- 

 phene and slaughter of the animals. Ronnel and phenothiazine as feed additives are 

 not effective in reducing adult face fly numbers. 



Mosquitoes are troublesome in many areas. To reduce this nuisance around 

 your home, follow these suggestions: (l) Eliminate standing water that may accumu- 

 late in eave troughs, old tires, children's toys, cans, etc. (2) Spray the shrubbery 

 and tall grass with a 1.0$ malathion water-diluted spray. To mix, use two ounces of 

 the 50-57$ malathion emulsion concentrate per gallon of water. Repeat the applica- 

 tion in two weeks if needed. (3) Keep screening on all doors and windows in good re- 

 pair, (h) In addition, hang plastic resin strips (2" x 10") containing 20$ dichlor- 

 vos (DDVP) at the rate of one strip per 1,000 cubic feet, or about one per room. 

 These strips are effective for four to six weeks. The dichlorvos vaporizes, slowly 

 killing mosquitoes, gnats and flies. These strips are safe to use around children 

 and pets. An 0.1$ pyrethrin space spray, fine mist or fog may be used indoors for 

 quick knockdown in place of the dichlorvos resin strips. Repeat treatments will be 

 needed with the pyrethrin. (5) When entering mosquito-infested areas, apply a repel- 

 lent to exposed parts of the body. The best mosquito repellent is DEET (diethyl 

 toluamide ) . 



Fleas are causing problems to returning vacationists. The adult fleas have 

 developed from the worm stage in dog or cat beds or resting areas. The worms will 

 hatch in such places as rugs or upholstered furniture and in dirt in flower and 

 shrubbery beds from eggs laid by adult fleas that drop from the dog or cat. Hungry 

 adult fleas will spread throughout the entire house and yard. 



For control, treat areas where fleas occur with carbaryl ( Sevin) or mala- 

 thion as a dust or spray. The dog or cat can also be treated with the same material. 



Caution : Before applying insecticides, read the labels carefully and fol- 

 low all precautions. This not only will insure personal safety, but will also elimi- 

 nate insecticide residue hazards. 



Prepared by H. B. Petty, Steve Moore, Roscoe Randell and Clarence E. White 

 Extension Entomologists, University of Illinois College of Agriculture 

 and Illinois Natural History Survey 



#•-*■**■*#■*-#** 



H. B. Petty 

 Extension Specialist 

 in Entomology 



