Domed part of the occiput also with two rows of three smaller tubercles each, converging backwards.

They are covered with 0.22 millimetres (0.0087 in) long hairs and the shape of the operculum and micropylar plate correspond to that of many other Orestes species.

[2][3] 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).

The species name was chosen in honor of German hobby entomologist Ulrich Ziegler, who died in 1994 and whom both authors thank for his support in the early years.

They further pointed out that both the publication by Zompro (2004) and that by Brock and Okada (2006) contained identification keys in which a mesonotum is typical for Pylaemenes, which is more than twice as long as the pronotum, which is the case with Orestes ziegleri according to the first description.