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Insect wings are adult outgrowths of the insect exoskeleton that enable insects to fly. They are found on the second and third thoracic segments (the mesothorax and metathorax), and the two pairs are often referred to as the forewings and hindwings, respectively, though a few insects lack hindwings, even rudiments.
Feb 7, 2024 · While most flightless birds retain non-functional wings or wing vestiges, a small number of species are truly wingless, lacking any wing remnants. These include the Inaccessible Island Rail (extant) and the extinct upland moa and elephant birds.
Wingless insect. There are various disparate groups of wingless insects. Apterygota are a subclass of small, agile insects, distinguished from other insects by their lack of wings in the present and in their evolutionary history. They include Thysanura (silverfish and firebrats).
The Pterygota (/ ˌtɛrəˈɡoʊtə / terrə-GOH-tə[2] Ancient Greek: πτερυγωτός, romanized: pterugōtós, lit. 'winged') are a subclass of insects that includes all winged insects and the orders that are secondarily wingless (that is, insect groups whose ancestors once had wings but that have lost them as a result of subsequent evolution). [3]
Jan 16, 2003 · Here we show that stick insects (order Phasmatodea) diversified as wingless insects and that wings were derived secondarily, perhaps on many occasions.
- Michael F. Whiting, Sven Bradler, Taylor Maxwell
- 2003
May 27, 2003 · Secondary loss of wings has occurred in many lineages and a few orders, such as the Siphonoptera (fleas), have become completely wingless. Detailed phylogenetic study of the stick insects has now indicated the converse: that wings may have been regained by some members of an ancestrally wingless group [1].
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Feb 21, 2022 · The mechanism of wing development in hemimetabolous insects, in which the first functional wings evolved, is key to understand where and how insect wings evolutionarily originate.
