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Science 23 October 1998:
Vol. 282. no. 5389, p. 589
DOI: 10.1126/science.282.5389.589k
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This Week in Science

Some of the oldest (paleozoic) dragonfly-like insects have "smart" structures on their wings. Wootton et al. (p. 749; see the news story by Vogel) show that these ancient insects had devices analogous to those seen in modern dragonflies that deform the wing in response to aerodynamic loading. Despite the analogies, the two types of structures are not homologs--in one case (the triangle-subtriangle complex) they are effectively built the opposite way around, thus providing a vivid illustration of adaption arriving at the same functional solution through different morphological routes.




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Science. ISSN 0036-8075 (print), 1095-9203 (online)