Order: Mantophasmatodea (Heelwalkers):
The most obvious differences between the sexes
lies in the structure of the external genitalia. The female has a complicated
ovipositor, while the male has internal phallic structures, and well developed
cerci which are used as claspers. The female abdomen is widest in the middle
(where the ovaries are situated) in contrast to the male, which has an abdomen
that is widest near the tip. Males are considerably smaller and always more
slender than females.