
Belongs within: Phasmatodea.
The Pachymorphinae is a group of mostly small stick insects found in Eurasia, Africa and Australasia.
Characters (from Brock & Hasenpusch 2009): Wingless; either remarkably slender or rather stouter-bodied. Antennae shorter than fore femora.
<==PachymorphinaeWBM03 |--Acanthoderus Gray 1835BH07 | `--A. spinosus (Gray 1834)BH07 |--Gratidia Stål 1875WBM03, Z04 | |--G. fritzscheiWBM03 | `--G. voluptariaR13 |--SceptrophasmaWBM03 | |--S. hispidulaWBM03 | `--S. langikawicensisWBM03 `--Pachymorpha Gray 1835BH07 |--*P. squalida Gray 1835BH07 |--P. simplicipes Serville 1838 [incl. P. pasithoe (Westwood 1859)]BH07 `--P. spinosa Brock & Hasenpusch 2007BH07
*Type species of generic name indicated
References
[BH07] Brock, P. D., & J. W. Hasenpusch. 2007. Studies on the Australian stick insects (Phasmida), including a checklist of species and bibliography. Zootaxa 1570: 1–81.
Brock, P. D., & J. W. Hasenpusch. 2009. The Complete Field Guide to Stick and Leaf Insects of Australia. CSIRO Publishing: Collingwood (Australia).
[R13] Reuter, O. M. 1913. Lebensgewohnheiten und Instinkte der Insekten bis zum Erwachen der sozialen Instinkte. R. Friedländer & Sohn: Berlin.
[WBM03] Whiting, M. F., S. Bradler & T. Maxwell. 2003. Loss and recovery of wings in stick insects. Nature 421: 264–267.
[Z04] Zompro, O. 2004. A key to the stick-insect genera of the ‘Anareolatae’ of the New World, with descriptions of several new taxa (Insecta: Phasmatodea). Studies on Neotropical Fauna and Environment 39 (2): 133–144.