Hemideina ricta The thorax contains the front, middle and hind legs of the weta, each leg is made up of six segments; the coxa, the trochanter, the femur, the tibia, the tarsus and the pretarsus. The ear of the weta can be found at the top of the tibia near the knee joint of the front legs. The tibia of the hind legs are covered in spines, that can be rubbed against the stridulatory ridges on the side of the body to produce a sound, these can also be used as a defence mechanism against predators. Banks Peninsula tree weta can be
Oruza wings with stalked veins 3 and 4. Larva with two pairs of abdominal prolegs. The genus has previously been classified in the subfamily Aventiinae within Erebidae or in the subfamily Acontiinae of the family Noctuidae. Oruza Oruza is a genus of moths of the family Erebidae. Palpi upturned, reaching vertex of head, where the second joint hairy in front and third joint minute. Antennae of male ciliated and with bristles at the joints. Thorax and abdomen slightly scaled. Fore legs with hairy tibia and femur. Hind legs of male with outer side hairy tibia and tarsi, with long short scaly