Rhynchacris sp. "Cerro Chucantí"
(by Bruno Kneubuehler)


General Informations

  • provenience: Cerro Chucantí, Daríen, Panama
  • collected in March 2016 by Guido Berguido (PA), Christoph Röhrs (DE)
  • taxonomical evaluation by Oskar Conle (DE), currently being described
  • F1 CB culture in 2017 by Bruno Kneubuehler (CH)
  • further taxonomical informations ➤ Phasmida Species Files
  • this is a pure culture, and serious breeders will avoid  mixing this culture with similar populations from a different provenience / location
  • when you will spreading this culture to other breeders, then always use the full species name with provenience reference 


  • study, stout
  • body length ≈ 5.5 cm
  • females coloration is variable across individuals
  • mainly brown, few females have some greenish small dots


  • slender
  • body length ≈ 4 cm
  • brown


  • newly hatched nymphs are brown
  • body length ≈ 16mm
  • on how to distinguish between male and female nymphs


  • ≈ 4.5 x 2 mm
  • brown

Food Plants

  • bramble (Rubus spp.)
    well accepted by nymphs and adults
  • other possible food plants (although not yet tested):
    Salal (Gaultheria shallon)
    hazelnut (Corylus avellana)
    raspberry (Rubus idaeus)
    oak (Quercus spp.)

Breeding, Behaviour

  • very easy to breed
  • active mainly during the night
  • they feign death when touched
  • nymphs as well as adults usually hide within dry leaves on the ground during the day
  • a defensive spray has not been observed
  • females stick their eggs into a substrate on the ground, which is preferably humid but not soaking wet
  • possible substrates are peat, soil (make sure it is pestizide free!) or just a crumbled up (organic) non-colored, old piece of cloth
  • they lay only few eggs, about 5 - 6 per female and week
  • incubation (Cup-Incubation-method, on medium damp vermiculite) about 6+ months at 20 - 24 °C
  • general note - it is quite common that, from the very same batch of eggs, some nymphs will hatch weeks or even months after the first nymphs
  • eggs can be covered with vermiculite (about 5 mm high), which makes it easier for the nymphs to hatch without getting stuck in the eggs shell
  • alternatively one can also stick the eggs into the vermiculite (egg lid must face upwards!)
  • eggs of this species are not particularely prone to get mouldy
  • nymphs hatch during the night
  • keep a constantly humid substrate in their cage, but make sure that it is not soaking wet
  • 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 30 x 30 x 30 (cm, L x B x H) for 5 - 6 adult couples
  • males will be adult after 7 months (at 20 - 24°C), females after 9 months

Basics of phasmid breeding

  • keep only one species per cage, overpopulation is one of the main reasons for breeding failures
  • different populations of the "same" species should be kept strictly seperate, cause these could be significantly different after all (cryptic species, sibling species)
  • keep nymphs seperate from the adults, mainly to protect them during the crucial moulting phases
  • choose cages 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 drop in temperature is natural (down to around 20°C) and advisable
  • 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 

direct link to this category

direct link to category: sp. (Cerro Chucantí, Darén, Panama)