Cicada-predator
Guides
Sphecius
Cicada-killer Wasps, Cicada Killers
Sphecius is a genus of large, solitary, ground-dwelling predatory wasps commonly known as cicada-killer wasps. The genus comprises 21 recognized species worldwide, with highest diversity in the region between North Africa and Central Asia. Females hunt adult cicadas, sting them into paralysis, and provision underground nests with these prey items for their larval offspring. The genus is notable for pronounced sexual size dimorphism, with females approximately twice the size of males, and for complex male territorial behavior. Four species occur in the Americas: S. speciosus (eastern), S. grandis (western), S. convallis (Pacific), and S. hogardii (Caribbean).
Sphecius convallis
Pacific cicada killer, Pacific cicada-killer wasp
Sphecius convallis, the Pacific cicada killer, is a large solitary wasp in the family Crabronidae. Females hunt cicadas, paralyze them with venom, and transport them to underground burrows as food for their larvae. The species occurs in arid and semi-arid regions west of the 100th meridian in North America, with populations studied intensively in Arizona mine tailings. Research has documented complex behavioral ecology including kleptoparasitism, thermal regulation strategies, and sex-specific provisioning behaviors.
Sphecius grandis
Western Cicada Killer, Western Cicada-killer Wasp
Sphecius grandis is a large, solitary wasp endemic to western North America, ranging from Central America through Mexico to the Western United States. Females construct burrows in sandy, well-drained soils, often forming nest aggregations with hundreds of individual nests. They provision underground cells with paralyzed cicadas (primarily Tibicen duryi, T. dealbata, and T. parallela) as food for their larvae. The species exhibits pronounced sexual dimorphism: females are larger (forewing length 2.5–3 cm, mass ~256 mg) and live approximately one year, while smaller males (~95 mg) emerge earlier, live only a few days, and engage in aggressive territorial competition for mating access. Activity is concentrated in July and early August, synchronized with cicada emergence. Despite their large size and formidable appearance, they are not habitually aggressive toward humans.
Sphecius hogardii
Caribbean cicada killer, Caribbean Cicada-killer Wasp
Sphecius hogardii, commonly known as the Caribbean cicada killer, is a large solitary wasp in the family Crabronidae. It is one of four North American species in the genus Sphecius, all of which specialize in hunting cicadas to provision underground nests. The species is found in the Caribbean region and extends into southern Florida. Like other cicada killers, females paralyze cicadas with venom and transport them to burrow cells as food for their developing larvae.
Sphecius speciosus
Eastern cicada-killer wasp, cicada killer, cicada hawk
Sphecius speciosus is a large, solitary digger wasp and one of the largest wasps in eastern North America. Females hunt cicadas, paralyzing them with venom to provision underground nest cells for their larvae. Despite their formidable size and appearance, they pose minimal threat to humans—females rarely sting unless roughly handled, and males lack stingers entirely. The species exhibits pronounced sexual dimorphism, with females substantially larger to accommodate egg-laying and prey transport duties.