Medaurini sp. "Khao Yai"
(by Dr. Sascha Eilmus, Germany, Biologist)
 

OrderPhasmatodea
 
SuborderVerophasmatodea 
InfraorderAnareolatae 
FamilyPhasmatidaeGray, 1835
SubfamilyClitumninaeBrunner v. Wattenwil, 1893
TribeMedauriniBrunner v. Wattenwil, 1893
Genus (not yet determined)
Species (not yet determined)


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General Notes

  • PHASMA assessed this species in the "protected status",  because it is relatively rare reared

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Orgin

  • stock 1
    Thailand, Nakhon Ratchasima Region, leg. Ingo Fritzsche IX.1997 - I.1998. [this culture stock might be lost
  • stock 2
    Thailand, Khao Yai National Park, leg. Allan J. E. Harman VIII.2000

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Females

  • typical brown, bright green or beige phasmids
  • size varies around 9 to 9.5 cm
  • not winged
  • entire body is covered with small bright spots
  • the front legs bulge (femora) is colored red
  • the overall appearance is reminiscent of the Mediterranean stick insect Bacillus rossius. However, they are not closely related

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Males

  • also typical phasmids
  • about 8 cm long
  • they are not winged
  • males are red-brown in color

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Eggs

  • dark grey
  • round
  • bright operculum and micropylar plate
  • very small, only 1 mm

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Food Plants

  • bramble (Rubus spp.)
    easily accepted by both nymphs and adults
  • other plants which are eaily accepted:
    hazel (Corylus avellana), oak (Quercus spp.), beech (Fagus spp.), rose (Rosa spp.), raspberry (Rubus idaeus) and many other plants 
  • natural host plant is unknown but it is likely that this species is polyphagous

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Behaviour

  • freshly hatched nymphs are very small (less than 1 cm) and prefer to rest on dry leaves on the ground of the cage
  • therefore it is recommended to offer fresh food plants also on the ground of the cage when hatching starts
  • during the day, young nymphs are usually on the leaves of the food plants
  • older nymphs and adults prefer to rest on the screen of the cage with head down.

Developement

  • incubate the eggs at room temperatures (18-25°C) on some slightly humid substrate, e.g. vermiculite
  • incubation time is about 6 - 7 months at 23°C (but sometimes it can take much longer – up to 1 year)
  • they will be adult after about 3 to 4 months at about 23°C
  • females lay several eggs per day, which they just drop to the ground

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Breeding Notes

  • an easy to breed species
  • one just needs to be patient because the development in the egg takes some time
  • adults and nymphs can be kept together in a big and quite airy cage
  • young nymphs have been sprayed with water 3 to 4 times a week, older nymphs an adults do not need additional water spraying
  • for a successful development and molting the terrarium was filled with a thin layer of slightly moist vermiculite on the cage floor
  • best rearing results have been achieved by just leaving the tiny eggs in the cage and keeping the vermiculite slightly moist. Drought for a few weeks does not seem to affect the eggs

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References

  • Phasmida Species Files  (www.phasmida.orthoptera.org)

 

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direct link to category: sp. (PSG 229)