[3] The species of the genus Haaniella reach a body length of 4.5 to 16.5 cm in the female sex.

The species was discovered by Jimmy Gideon Ginting in November 2010 in northern Sumatra near Mount Sibayak at an altitude of 1400 to 1600 m.[10][11] The females lay their relatively large eggs several centimeters deep in the ground using the ovipositor.

With a length of up to 12 mm and a weight of almost 0.3 g, Haaniella echinata produces the largest known phasmid eggs.

Many other Haaniella species not only take longer to develop, but also reach a significantly older age.

Oskar V. Conle was able to document an age of more than five years in a female wild caught by Haaniella scabra.

[3] The genus was founded in 1904 by William Forsell Kirby in honor of the Dutch zoologist Wilhem de Haan who had described the type species.

This synonymization was canceled through an extensive publication by Frank H. Hennemann et al from 2016, in which five more species were newly described.

The result showed that the representatives of the Heteropterygini form a common clade, but the genus Heteropteryx is phylogenetically placed in the middle of several lines of species currently listed in Haaniella.

'Bidoup Nui Ba' from Vietnam as the eighth species introduced to Europe and in breeding under PSG number 404.

[10][12][16] The breeding of Haaniella species is generally considered to be a bit tricky due to its slow development.

Although the insects accept most forage plants without any problems, they tend to have diarrhea in spring and early summer when feeding on leaves that are too fresh, which can lead to the total loss of entire breeding stocks.