The first new species is Idris bianor, named after the spider genus it parasitizes, according to the study. Its body length ...

The egg sacs were collected from “guarding mother spiders,” researchers said.

The egg sacs were collected from “guarding mother spiders,” researchers said.

A study in West Bengal uncovered four parasitic wasp species emerging from spider egg sacs, shedding light on the hidden lives of these unique insects.