We found this beautiful wasps’ nest this morning – in someone’s garden hedge. The kids thought the caps on the cells looked like tiny tennis balls. These are paper wasps (ashinaga-bachi) and they feed their young on chewed-up (= masticated) insects, especially caterpillars, so they are useful to have in the garden. I’ve also read that the wasp grubs produce a nutrient secretion which the adults feed on. Symbiosis between generations!
More information about paper wasps here at Wikipedia.
Polistes rothneyi = ki-ashinaga-bachi (yellow paper wasp)
(literal translation = yellow long-legged wasp)
Location: Yokoyama Village
Google map: here