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Mantophasmatodea (Heelwalkers):
recognition
Mantophasmatodea can easily be mistaken for
juveniles of Praying Mantids, Stick insects (order
Phasmida), or Grasshoppers
(order Orthoptera). The adults are only 2-3cm in length and do not have wings.
Superficially they look remarkably like a nymph of a Praying Mantid (which do
not have wings in the juvenile stage), except that they do not have well
developed raptorial fore legs (their forelegs are somewhat enlarged). They
differ from the plant feeding stick insects in that they are carnivorous, have
longer antennae (with a terminal bend) and, among other characters, a head that
is pointed downwards as opposed to forwards. Mantophasmatodea do not have
jumping hind legs as do most grasshoppers and crickets, but are technically
separated from Orthoptera based on characters present on the thorax and
ovipositor. Their remarkable resemblance to juvenile stages of other insect
orders is probably why this new order was overlooked for so many years. Live
specimens, however, are easily recognised by their habit of keeping the last
tarsal segment and enlarged pad (arolium) up in the air, and off the substrate.
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Web page development and text by Simon
van Noort (Iziko South African Museum) and Mike
Picker (University of Cape Town). |