Medauroidea extradentata

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Medauroidea extradentata
2015 Patyczak rogaty (samica).jpg
Vietnamese walkingstick
Scientific classification edit
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Phasmatodea
Infraorder: Anareolatae
Family: Phasmatidae
Subfamily: Clitumninae
Genus: Medauroidea
M. extradentata
Binomial name
Medauroidea extradentata
Brunner von Wattenwyl, 1907

Medauroidea extradentata, commonly known as the Vietnamese or Annam walking stick, is a species of the family Phasmatidae. They originate in Vietnam and are commonly found in tropical forests there. They eat a variety of foliage, though in captivity they commonly eat blackberry bramble, hawthorn, oak, red maple and rose.

Physical characteristics[edit]

Vietnamese walking sticks are approximately 4-5 inches (10–12 cm) in length. Their heads are elongated and oval shaped with thread-like antennae. Their chewing mouthparts are specially adapted for eating plant material. Along its thorax are a number of small pointed bumps. Their middle set of legs show small flanges and minute spikes. These walking sticks are brownish in color and have six legs, which is a characteristic of all insects. Both male and female Vietnamese walking sticks have no wings.[1]


Medauroidea extradentata is mainly parthenogenetic, meaning they are asexual, making males very rare in the species. The female drops hundreds of eggs onto the forest floor, these eggs hatch in a few months. The eggs of this species are mottled with black and white and capped with black.

Life cycle[edit]

The Vietnamese walking stick is short lived, living between 5–7 months. Nymphs look nearly identical to their parents except in size. They molt about 6 times before they become adults. At 3 months of age they become able to reproduce. Their main predators are birds and small mammals, though their camouflage helps them combat this.



  • Stephanie Boucher, Hirondelle Varady-Szabo (2005). "Effects of Different Diets on the Survival, Longevity and Growth Rate of the Annam Stick Insect, Medauroidea extradentata (Phasmatodea: Phasmatidae)". Journal of Orthoptera Research. 14 (1): 115–118. doi:10.1665/1082-6467(2005)14[115:EODDOT]2.0.CO;2. ISSN 1082-6467. JSTOR 3657114.

External links[edit]