Hemimetabolism
Hemimetabolism or hemimetaboly, also called partial egg, nymph, and the adult stage, or imago. These groups go through gradual changes; there is no pupal stage. The nymph often has a thin exoskeleton and resembles the adult stage but lacks wings and functional reproductive organs.[2] The hemimetabolous insects differ from ametabolous taxa in that the one and only adult instar undergoes no further moulting.[3]
Orders
All insects of the Pterygota except Holometabola belong to hemimetabolous orders:
- true bugs)
- Orthoptera (grasshoppers, locusts, and crickets)
- praying mantises)
- termites)
- earwigs)
- damselflies)
- stick insects)
- sucking lice)
- mayflies)
- stoneflies)
- icebugs and gladiators)
Terminology of aquatic entomology
In aquatic
Ephemeroptera, and Odonata. Aquatic entomologists use this categorization because it specifies whether the adult will occupy an aquatic or semi aquatic habitat, or will be terrestrial. This classification system is similar to previously used nomenclature in terrestrial entomology.[citation needed
]
See also
- Holometabolism
- Subimago
- Metamorphosis
References
- ^ McGavin, George C. Essential Entomology: An Order-by-Order Introduction. Oxford: Oxford University Press, 2001. pp. 20.
- ^ Baluch, Page (April 29, 2011). "Incomplete Metamorphosis Has Three Stages: Egg, Nymph, and Adult". ASU - Ask A Biologist. Arizona State University School of Life Sciences Ask A Biologist. Retrieved 2 September 2019.
- ^ Gullan, P. J.; Cranston, P. S. (2014). The Insects: An Outline of Entomology (5th ed.). John Wiley & Sons, Ltd. p. 241.