Often, a wooded area infested in. 1953 with cicadas, has since been cleared. The cicadas 

 will still emerge and cling to any vine, plant, or other upright object. When they 

 emerge as adults, they will fly about in search of trees in which to deposit their eggs. 



We are anxious to update our records on the distribution of this brood of cicadas in 

 Illinois, in order to make more-accurate predictions for 1987. Please send us spec- 

 imens of cicadas that you encounter, noting the date and location (nearest town). 

 Please mail the specimens to Dr. Lewis J. Stannard, 285 Natural Resources Building, 

 Urbana, Illinois 61801. 



Protect young trees and shrubs by enclosing them in cheesecloth or mosquito netting. 

 Carbaryl (Sevin) is effective as a spray. Use 2 pounds of the 50-percent wettable 

 powder per 100 gallons of water. For smaller amounts, use 2 tablespoons per gallon 

 of water. Apply the treatment when egg- laying begins, and repeat it 7 to 10 days 

 later. Do not apply carbaryl to apple trees within 2.1 days after full bloom, because 

 it may cause a thinning of the fruit. Do not apply to Boston Ivy. Repeated treatments 

 with carbaryl may produce a buildup of mites, which will cause a russetting of the 

 leaves. Adding 2 teaspoons of 57-percent malathion liquid concentrate per gallon of 

 water to the carbaryl spray mixture will control these mites. 



Brown recluse spiders . Much attention has been 

 given the brown recluse spider during the past few 

 years. Since detection in Illinois during 1957, 

 Dr. J.D. Unzicker, Taxonomist of the Illinois Natu- 

 ral History Survey, has identified brown recluse 

 spiders from 45 of the 102 counties in Illinois 

 (see map) . 



The body of this spider is about 

 1/2 inch long, the leg span 1 to 

 1-1/2 inches. The color may vary 

 from light fawn to almost dark 

 brown ; with a distinct, fiddle- 

 shaped, dark marking behind the 

 head (see picture) . 



This spider is poisonous , and is 



now considered to be of public 



health importance. It bites only 



when disturbed. The brown recluse 



spider has a habit of living in dark, sheltered 



areas (such as attics), in stored goods, basements, 



crawl. spaces,, and barns. Unlike other web-spinning 



species, it spins very small or irregular webs. 



During the past year, we have received reports of 

 bites that produced necrotic lesions that were 

 painful and slow to heal. These have been attrib- 

 uted to the brown recluse spider. Consult your 

 physician about any such bite. We are trying to 

 catalogue the distribution of this spider and 

 others , and we will identify all spiders sent to the 

 Natural Histoiy Survey in Urbana. Please send such 



specimens to Dr. John Unzicker, Room 93, Natural Resources Building, Illinois Natural 

 History Survey, Urbana, Illinois 61801. Include your name, address, and where the 



April 1, 1970 , places where the 

 brown recluse spider has been 

 found in Illinois . 



