Chelonus
noun
Che·lo·nus
kəˈlōnəs
: a genus of small ichneumon wasps (family Braconidae) parasitic on various lepidopterous larvae and introduced in many regions in attempts at biological control of plant-eating larvae
Word History
Etymology
borrowed from New Latin, masculine noun formed on the basis of Greek chelṓnē "tortoise"; so named because the abdomen lacks segments, appearing to form a solid piece like a turtle's shell