Synonyms and other taxonomic changes
Efferia interruptus
Identification
Large, gray, abdominal pattern of dark dashes on segments is distinctive, at least in eastern United States--see photos. Ovipositor of female is long, but somewhat rounded at tip, not sharply pointed.
Range
Across southern United States. Noted from Arizona, California, New Mexico, Arkansas, Missouri, Illinois, Texas, North Carolina, Georgia, Florida.
Habitat
Typically open, grassy areas
Season
June-September (eastern North Carolina)
Food
Predatory. Often takes very large insect prey, such as grasshoppers, dragonflies, horseflies. See Internet references.
Internet References
North Carolina State University Entomology Collection--listed as
Efferia interruptus, common, with 66 specimens pinned
Record from Arizona--
Efferia interruptus
Robber Flies of Illinois--good photos of specimens, gives range
