Orestes ziegleri

The only female known to date is 45.7 millimetres (1.80 in) long, with 6.3 millimetres (0.25 in) on the head, 3.3 millimetres (0.13 in) on the pronotum, 8.3 millimetres (0.33 in) on the mesonotum and 1.9 millimetres (0.075 in) fall into the median segment. The coloration is given as chocolate brown, whereas the photo of the living animal attached to the first description shows a very light, rather beige coloration, which corresponds to the darkening of adult females of other Orestes species. On the head there are two rows tubercles converging from the vertex towards the occiput. They each consist of three large tubercles, which correspond to the supraantennals, the anterior and posterior supraoccipitals. Domed part of the occiput also with two rows of three smaller tubercles each, converging backwards. The bulge itself has laterally flat tubercles. The cheeks (genae) behind with an approximately tooth-shaped, large tubercle. The eyes are hemispherically protruding. The first five tergite of the abdomen are equal in length and widen posteriorly. Tergites seven to nine are parallel-sided, the tenth rectangular. Males of Orestes ziegleri are not known. The dark brown eggs are 3.3 millimetres (0.13 in) long, 2.7 millimetres (0.11 in) wide and 2.9 millimetres (0.11 in) high. …

The female of this species on which the first description is based was collected by Ingo Fritzsche between October 19 and 25, 1997 in the south of Khao Mai Pok in the Thai Nakhon Ratchasima province collected at an altitude between 900 and 1,000 metres (3,000 and 3,300 ft).