Lymantria-dispar
Guides
Calosoma sycophanta
forest caterpillar hunter, Agreeable Caterpillar Hunter
Calosoma sycophanta is a large, metallic ground beetle renowned for its specialized predation on caterpillars. Adults reach 21–35 mm in length and display striking iridescent green elytra with a bluish scutellum, though coloration shifts with light angle to show blue, bronze, copper, gold, or black tones. Both adults and larvae are arboreal hunters, ascending trees to prey on caterpillars including Lymantria dispar (gypsy moth), Thaumetopoea processionea (oak processionary), and Thaumetopoea pityocampa. The species is diurnal and visually orients toward dark objects and tree bases in forests. Native to Europe, it has been introduced to North America for biological control and is now established in the northeastern United States.
Ooencyrtus kuvanae
gypsy moth egg parasitoid, spongy moth egg parasitoid
Ooencyrtus kuvanae is a solitary egg parasitoid wasp in the family Encyrtidae, originally introduced to North America in 1908 for biological control of Lymantria moths. It has since become established as a natural enemy of the spongy moth (Lymantria dispar) and has been documented parasitizing the invasive spotted lanternfly (Lycorma delicatula) in North America. The species exhibits quasi-gregarious development, with females typically laying one offspring per host egg and adjusting sex ratios based on resource availability and local mate competition. Development from egg to adult takes 18–24 days, with males emerging approximately one day earlier than females.