In 1992-1993, Centistes gasseni Shaw was imported into the United States, and in the laboratory successfully parasitized: southern corn rootworm, Diabrotica undecimpunctata howardi Barber; banded cucumber beetle, D. balteata LeConte; western corn rootworm, D. virgifera virgifera LeConte; and striped cucumber beetle, Acalymma vittatum (F.). Males and females of C. gasseni lived an average of 15.4 and 12.9 days (with a maximum of 30 and 29 days), respectively. A single female oviposited in 383 host Diabrotica over her lifetime, from which 158 cocoons were recovered. Additional observations on the biology and rearing of the parasitoid are presented.