Female hump-winged grigs like to nibble on their lovers’ wings during sex. So every time a male grig mates, his wings get shorter, which makes him less desirable. When there isn’t much wing to chew on, female grigs move onto other body parts. “I’ve seen males with missing hind legs that have apparently been chewed off by females,” says Kevin Judge, an insect expert from George MacEwan University in Edmonton, Alberta, Canada. When hungry at the end of the breeding season, female grigs may even breed with males of other grig species. Judge: “They just go with what’s available.”
Source: New Scientist
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