Phryganistria grandis "Cham Chu"
(by Bruno Kneubuehler)


General Informations

  • provenience: Cham Chu NP (Vietnam)
  • collected in June / July 2015 by Joachim Bresseel (BE) and Jérome Constant (BE)
  • ID and taxonomic evaluation by Joachim Bresseel (BE)
  • F1 CB culture in 2016 by Bruno Kneubuehler (CH)
  • further taxonomical informations ➤ Phasmida Species Files
  • this is a pure culture, and serious breeders are requested to avoid mixing this culture with similar populations from a different provenience. When spreading this culture to other breeders, then always use the full name with provenience
  • this culture has the number CLP   (Online Phasma Culture List)


  • very big, long-legged species
  • body length 25 - 32 cm
  • females are greenish-brown


  • very big, long-legged phasmids
  • body length 18 - 25 cm
  • turquoise thorax, reddish-brown abdomen and legs


  • freshly hatched nymphs are green with dark reddish-brown, banded legs
  • body length 27 mm, 50 mm with outstreched forelegs
  • on how to distinguish between male and female nymphs


  • 5.5 x 3 mm
  • light brown
  • slightly glossy

Food Plants

  • bramble (Rubus spp.)
    well accepted by nymphs and adults
  • hazelnut (Corylus avellana)
    well accepted by nymphs and adults

Breeding, Behaviour

  • easy to breed
  • active mainly during the night
  • nymphs and adults often drop to the ground when touched
  • a defensive spray has not been observed
  • eggs just drop to the ground
  • about 10 - 15 eggs per female and week
  • incubation (Cup-Incubation-method, on medium damp vermiculite) about 4 - 5 months at 20 - 24 °C
  • eggs can be covered by vermiculite (about 5 mm high), which makes it easier for the nymphs to hatch without getting stuck in the eggs shell
  • eggs of this species are not prone to get mouldy
  • nymphs hatch during the night
  • these nymphs are already very big upon hatching, thus a big incubation container is needed
  • a humidity of about 65 - 70 % rH seems to be good enough for nymphs and adults
  • one can spray them regularly with chlorine-free water, but allow the water to dry up before spraying again
  • small nymphs can be kept in a Faunabox (or a similar cage), which shall not be too small
  • provide a cage of about 50 x 50 x 90 (cm, L x B x H) for 2 adult couples
  • males will be adult after 4 months (at 20 - 24°C), females after 5 months

Basics of phasmids breeding

  • keep only one species per cage, overpopulation is one of the main reasons for breeding failures
  • keep nymphs seperate from the adults, mainly to protect them during the crucial moulting phases
  • choose the cage big enough. When in doubt, too big is (usually) better than too small
  • a ventilator often supports good breeding results, as it seems to increase activity and feeding
  • provide enough light, but avoid direct sunlight (overheating)
  • try to keep day time temperatures below 25°C
  • a nocturnal fall of temperature is natural, and thus advantageous
  • do not spray too much, phasmids are no fish ! Allow the water to dry up before you spray again
  • minimize disturbances (loud music, commotions, light at or during the night, opening up cages in the morning [often a moulting phase] ect.)

Useful informations

detailed infos on how to breed phasmids

infos on newly cultured phasmid species

how to recognize the difference between male / female nymphs

eggs for breeding


direct link to this category

direct link to category: grandis (Cham Chu, Vietnam)