[2] The first and probably only females of Sungaya inexpectata were found near Mount Sungay in the province of Batangas-associated township Talisayon on the Philippine island of Luzon.

[3] The first males were found near Mount Cayapo in the Mariveles Mountains in Baranggay Alangan of the province of Bataan in the associated township Limay.

[4] The first males were found near Mount Cayapo in the Mariveles Mountains in the Limay municipality of Bataan Province.

[4][5] Oliver Zompro leave out the genus he described in an identification key for the Obriminae published in 2004 in his work on the former partial order Areolatae.

In the generally slimmer Sungaya, the mesonotum is only moderately widened towards the back and at its widest point is no more than twice the width of the front edge.

Females are particularly noticeable with either a very narrow white or a rather broader beige longitudinal stripe across their entire body.

The two accidentally created females grew into adult animals, but turned out to be infertile and did not produce any eggs.

In a later publication in 2008, of which Zompro is the editor, it is announced that the holotype will be given to the Museum of Natural History of the University of the Philippines in Los Baños, where also the first two males collected by Eusebio, Yap and Larona are deposited.

The generic name “Sungaya” refers to the location where the holotype was found in Barangay Sungay in the municipality of Talisay, which belongs to the province of Batangas.

[2][10] After it was controversial for a long time whether the animals collected in the meantime all belonged to the type species of the genus, Sarah Bank et al show in their genetic analysis based studies to clarify the phylogeny of the Heteropterygidae, that in addition to this one, there are two to three other previously undescribed species.

2 (Limay “Lowland”) were not described because it could be a breeding strain hybridized with Sungaya inexpectata and there were no wild-caught specimens.

[1] The species described so far are:[1] From 1996 to 2009, all breeding animals of the genus were traced back to the adult female Sungaya inexpectata found by Zompro.

[1] The genus is one of the most commonly kept stick insects, with Sungaya aeta mostly being kept, although rarely as pure breeding strains of the same species or location.