rhysimeter (risimeter)

[ næ. They are of large size, and the females are furnished with very long ovipositors, with which they pierce to considerable depth the trunks of trees, in order to lay their eggs in the tunnels of wood-boring larvæ, upon which their larvæ are external parasites. A number of European and North American species are known. The most prominent American long-stings, formerly placed in this genus, are now considered to belong to Thale a. Rhy odes (ri-sō'dēz), n. [NL. (Dalman, 1823),