Cicada killer wasps are large, solitary, ground dwelling, predatory wasps. They are so named because they hunt cicadas and provision their nests with them, after stinging and paralyzing them. Adults emerge in summer, typically beginning around late June or early July and die off in September or October. They are present in a given area for 60 to 75 days, usually until mid-September. The large females are commonly seen skimming around lawns seeking good sites to dig burrows and searching for cicadas in trees and taller shrubs. The males are more often seen in groups, vigorously challenging one another for position on the breeding aggregation from which they emerged, and generally investigate anything that moves or flies near them. It is not unusual to see two or three male wasps locked together in apparent midair combat, the aggregate adopting an erratic flight path until one of the wasps breaks away. The male wasp's aggressive behavior is similar to that of another robust insect of the area, the male carpenter bee. In both cases, while the males' vigorous territorial defense can be frightening and intimidating to human passersby, the males pose no danger whatsoever. Male cicada killers will only grapple with other insects, and cannot sting.
Service area's in Illinois includes: Orland Park, Orland Hills, Tinley Park, Oak Forest, Palos Heights, Palos Hills, Palos Park, Matteson, Flossmoor, Olyimpia fields, Country Club Hills, Harvey, Markham, Midlothian, Crestwood, Hazel Crest, Alsip, South Holland, Homewood, Lansing, Forest Park, Richton Park, Crete, Glenwood, Saulk Village, Chicago Heights, Posen, Blue Island, Beverly Chicago. Will counties Joliet and suburbs and in Shorewood, Lockport IL., New Lenox, Mokena, Frankfort IL., Frankfort Square, Homer Glen, Manteno, Peotone, Green Garden, University Park, Indiana's Lake County, Dyer, Schererville, St. John, Lowell, Cedar Lake, Munster, Crown Point, Griffith, Merrillville, IN., Valparaiso, and Winfield IN. Area in Cook county Illinois, Will County Illinois , and Lake County Indiana. .