Paul D Stewart / Illustration of 'The Entomologist'. Rare copper print with original hand colouring, drawn by George Spratt, printed by George Madely, and sold individually as part of a series through Charles Tilt's F...

Robert Thompson / Gypsy Moth (Lymantria dispar) caterpillar climbing a twig. Near Neum at border between Croatia & Bosnia, May.

Robert Thompson / Gypsy Moth (Lymantria dispar) caterpillars feeding on a leaf. Near Neum at border between Croatia & Bosnia, May.

Robert Thompson / Gypsy Moth (Lymantria dispar) caterpillar on a leaf. Near Neum at border between Croatia & Bosnia, May.

Gerry Ellis / Gypsy Moth (Lymantria dispar) collection containers, Olympic National Park, Washington

Hans Christoph Kappel / Male and female Gypsy moths (Lymantria dispar) on twig, Germany

Hans Christoph Kappel / Female Gypsy moth (Lymantria dispar) on leaf, Germany, possibly laying eggs

Hans Christoph Kappel / Female Gypsy moth (Lymantria dispar) on twig, Germany

Paul Hobson / Gypsy moth caterpillar, England, UK, Europe.

Doug Wechsler / Gypsy moth pupa, Connecticut, USA.

Mitsuhiko Imamori / Gypsy Moth (Lymantria dispar) close up on leaf, front view, Shiga, Japan