Undergrad entomologist Joseph Schubert tweeted this picture of an unfortunate insect getting chomped by a ground-dwelling spider.
Entomologist Nancy Miorelli snapped a photo of this fungus-infested bullet ant in the Cuyebano Reserve in Ecuador. “The fungus controls the ant's nervous system, making it climb to the top of a tall stem, then bursts from the back of the head capsule to spread its spores,” she says.
Illustrator Joschua Knüppe created this painting of a Mononsmilus, a newly discovered large-bodied anchovy from the Eocene.