Development.—If enough wasp larvae were present, they ate all eggs in an oötheca. Occasionally wasps developed in one end of an oötheca while cockroaches developed in the other; when this occurred, the cockroach nymphs always emerged last. The developmental period was 30-41 days at room temperature. There were 5-25 parasites per oötheca. The single exit hole in the oötheca varied from 0.6 to 0.9 mm. in diameter. (Lawson, 1954a.)
Distribution.—U.S.A.: New Jersey south to Florida, west to Illinois, Kansas, and Arizona. West Indies; Central and South America; Hawaii. (Burks, personal communication, 1956.)
Dicarnosis alfierii Mercet
Natural hosts.—"Phyllodromia" sp., Egypt (Mercet, 1930): According to Mercet, Dr. Alfieri claimed that this wasp parasitized one of the species of "Phyllodromia" found in Egypt, namely, Phyllodromia [= Blattella] germanica, Phyllodromia [= Supella] supellectilium and/or Phyllodromia treitliana. We do not know to which modern genus the host of this wasp belonged.
Cockroach, Egypt? (Mercet in Compere, 1938.)
Eutrichosomella blattophaga Girault
Natural host.—Cockroach, Australia, Queensland (Girault, 1915).
Family EUPELMIDAE[7]