New species of cockroach-killing wasps discovered in 25-million-year-old amber

This ensign wasp was trapped in amber 25 million years ago.


George Poinar Jr./Oregon State University

If you hate cockroaches, then you might find some satisfaction in a fascinating piece of ancient insect history that recently came to light. 

Oregon State University entomologist George Poinar Jr. discovered four new species of ensign wasps in 25-million-year-old amber found in the Dominican Republic and Mexico. These cockroach-killing wasps are still around today, and the amber finds offer an intriguing glimpse into their past.

Poinar is the author of a study on the amber-encased wasps published in the paleobiology journal Historical Biology this month.

This is one of four new species of ensign wasp found trapped in 25-million-year-old amber.


George Poinar Jr./Oregon State University

Ensign wasps let their young handle the cockroach-killing duties. Female wasps lay eggs in

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