ABOVE: New World stick insects, from left to right: Pseudosermyle phalangiphora, Metriophasma diocles, and Peruphasma schultei
CHRISTOPH SEILER
The scientific order Phasmatodea, or stick and leaf insects, is known for a variety of camouflage that allows the animals to blend in with their surroundings. They diversified after the dinosaurs went extinct, suggesting their variation developed as a result of the rise of predatory mammals and birds, according to a study published in Frontiers in Ecology and Evolution October 7.
An international team of researchers led by Sven Bradler at the the University of Göttingen constructed the first phylogenomic tree of these foliage-mimicking insects by analyzing the genes of 38 species. The researchers also found that Old and New World groups of stick insects diversified separately, showing that their lineages are based more on geography than on the type of foliage they resemble, such as sticks, leaves, or tree bark. In ...
