from The Century Dictionary and Cyclopedia
- In Braner's classification of insects, a group of superordinal rank including those forms which take their food by means of jaws when young, but by suction when adult.
Sorry, no etymologies found.
Menognatha: insects in which both young and adults feed by mandibles; e.g. the Orthoptera: see menorhyncha and metagnatha.
Menorhyncha: forms in which both young and adult take food by suction e.g. Hemiptera: see metognatha and metagnatha.