/preuh toor"euhn, -tyoor"-/, n.1. a proturan insect; telsontail.adj.2. belonging or pertaining to the order Protura, compromising the telsontails.
* * *▪ insectany of a group of about 150 species of minute (0.5 to 2 mm [0.02 to 0.08 inch]), pale, wingless, blind, primitive insects that live in damp humus and soil and feed on decaying organic matter. Proturans, frequently known as telsontails, include some of the most primitive hexapods (i.e., animals with six legs). They are worldwide in distribution, although the group was unknown before 1907.Unlike most insects, proturans lack antennae and possess 12 abdominal segments (instead of the typical 11), 3 of which are added postembryonically in successive nymphal molts, or sheddings of skin (anamorphosis). The front legs, carried like antennae, serve a sensory function. The cone-shaped head has anterior sucking mouthparts. There is a pair of ventral styli on each of the first three abdominal segments. Some authorities consider the proturans distinct from true insects (class or order Protura), and place them in the class Parainsecta along with the springtails (order Collembola).
* * *
Look at other dictionaries:
proturan — noun any of several minute primitive wingless and eyeless insects having a cone shaped head; inhabit damp soil or decaying organic matter • Syn: ↑telsontail • Hypernyms: ↑insect • Member Holonyms: ↑Protura, ↑order Protura * * * … Useful english dictionary
proturan — 1. noun Any of many primitive insects, of the order Protura, that lack eyes or wings 2. adjective Of or pertaining to these insects … Wiktionary
proturan — pro·tu·ran … English syllables
apterygote — /ap ter i goht , ap teuhr /, adj. belonging or pertaining to the Apterygota, a subclass of primitive wingless insects that undergo little or no metamorphosis. Also, apterygotous /ap ter i goh teuhs/. [ < NL Apterygota name of the subclass, equiv … Universalium
insect — insectival /in sek tuy veuhl/, adj. /in sekt/, n. 1. any animal of the class Insecta, comprising small, air breathing arthropods having the body divided into three parts (head, thorax, and abdomen), and having three pairs of legs and usually two… … Universalium
order Protura — noun minute wingless arthropods: telsontails • Syn: ↑Protura • Hypernyms: ↑animal order • Member Holonyms: ↑Insecta, ↑class Insecta, ↑Hexapoda, ↑class Hexapoda … Useful english dictionary
Protura — noun minute wingless arthropods: telsontails • Syn: ↑order Protura • Hypernyms: ↑animal order • Member Holonyms: ↑Insecta, ↑class Insecta, ↑Hexapoda, ↑class Hexapoda … Useful english dictionary
telsontail — noun any of several minute primitive wingless and eyeless insects having a cone shaped head; inhabit damp soil or decaying organic matter • Syn: ↑proturan • Hypernyms: ↑insect • Member Holonyms: ↑Protura, ↑order Protura * * * /tel seuhn tayl / … Useful english dictionary
pseudocellus — |süd+ noun (plural pseudocelli) Etymology: New Latin, from pseud + ocellus 1. : one of a pair of minute structures of unknown function on the head of a proturan 2. : one of the simple eyes of a larval insect … Useful english dictionary
pro|tu|ran — «proh TYUR uhn», noun, adjective. –n. any one of a group of tiny primitive insects that live under bark and in damp places. Proturans are blind and wingless and are believed to represent a very early stage in the evolution of insects. »A new… … Useful english dictionary