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.
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Poinar is the author of a study on the amber-encased wasps published in the paleobiology journal Historical Biology this month.
Ensign wasps let their young handle the cockroach-killing duties. Female wasps lay eggs in