At this time of year, some nurseries start selling the egg cases of Chinese mantis as a biological control for the garden. These alien-looking insects are praying mantis and are harmless to humans, ...

For a praying mantis, eating the wrong insect can be a one-way ticket to a watery grave. Some of its typical bug prey contain horsehair worms, Chordodes fukuii, which grow in a mantid's gut—and ...