Fig. 161.—Wasp using pebble.
From Peckham’s “Solitary Wasps,” Houghton, Mifflin & Co.
The digging wasp (Figs. [160] and [161]) supplies its larva with caterpillars and closes the hole, sometimes using a stone as pounding tool. Among the few other uses of tools among lower animals are the elephant’s use of a branch for a fly brush, and the ape’s use of a walking stick. This wasp digs with fore feet like a dog and kicks the dirt out of the way with its hind feet.
Are the wings of bees and wasps more closely or less closely veined than the wings of dragon flies? (Fig. [177].)
Illustrated Study of Beetles.
Fig. 162.—Diving beetle (Dytiscus), with larva, a.
Fig. 163.—Weevil.
Fig. 164.