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- © Joseph Redtenbacher: Die Insektenfamilie der Phasmiden. Vol. 1. Phasmidae Areolatae. Tafel/plate I, Abb./pict. 15. Wilhelm Engelmann, Leipzig 1906
- Copyright licence: Marked as being in the public domain
- Provenance: http://media.eol.org/content/2013/12/07/11/41427_orig.jpg