Reference
M.J. Chacko (1969): Superparasitism in Trichogramma evanescens minutum Riley, an egg parasite of sugarcane and maize borers in India. II. Causes of superparasitism (Hymenoptera: Trichogrammatidae). – Beiträge zur Entomologie = Contributions to Entomology – 19: 637 - 642.