Phryganistria tamdaoensis "Da Krong"
(by Bruno Kneubuehler) 

 

OrderPhasmatodea
 
SuborderVerophasmatodea 
InfraorderAnareolatae 
FamilyPhasmatidaeGray, 1835
SubfamilyClitumninaeBrunner v. Wattenwyl, 1893
GenusPhryganistriaStål, 1875
SpeciesPhryganistria tamdaoensisBresseel, Constant, 2014

 

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General Notes

  • 2011 – this species is momentarily under taxonomical examination by Joachim Bresseel (Belgium)
  • 2012 – first successful culture by Bruno Kneubuehler (Switzerland)
  • 2012 – distributed as Phryganistria sp. „Da Krong"
  • 2014 - described as Phryganistria tamdaoensis by J. Bresseel and J. Constant
     
  • two cultures of this species from different locations are in culture:
    Phryganistria tamdaoensis "Tam Dao", Phryganistria tamdaoensis "Da Krong"
  • coloration of adult males of Phryganistria tamdaoensis "Da Krong" is significantly different from males of Phryganistria tamdaoensis "Tam Dao". Therefore these two cultures should be kept strictly seperate

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Origin

  • Joachim Bresseel (Belgium) and Jérôme Constant (RBINS) collected this species in July 2011 in Da Krong,  Vietnam (No. 11 and 12, "Phryganistria sp. Cerci 1", Vietnam 2011)
    They also found another color-variation of this species in Tam Dao (Vietnam) – which is quite distant from Da Krong. Although these belong to the same species, these two color variations should be kept seperat !

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Females

  • sturdy and very long phasmids
  • about 22 cm
  • upper side (dorsally) speckled with different brown
  • lower side (ventrally) greenish-brown
  • a fine red line runs alongside the lateral side of meso- and metathorax
  • legs with numerous spines and a reddish-brown stripe
  • antennae short
  • red inner side of the forelegs (in the area of the head)
  • cerci broad and much longer than the abdominal ending
  • subgenital plate just slightly longer than abdominal ending
  • praeopercular organ (the structure at the ventral end of the 7th abdominal segment, which serves as an anchorage for the male during mating) is very well developed
  • no wings (apterous)

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Males

  • sturdy and big phasmids
  • about 17 – 17.5 cm
  • thorax (dorsally and ventrally) grey-bluish with light brown areas
  • abdomen upper side (dorsally) is light brown
  • abdomen lower side (ventrally) is greenish-brown
  • legs with numerous, fine, black spines
  • legs are brown, with greenish-brown and reddish stripes
  • head light brown with a darker stipe across the eyes
  • antennae about ¾ of the forelegs
  • no wings (apterous)

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Nymphs

  • lenght (L1) 22 mm
  • coloration (L1) green-brown
  • antennae very short and brown
  • it is quite easy to draw a distinction between ♀♂ (by the naked eye) in L1

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Eggs

  • rather big
  • about 5 x 3 mm
  • olive-brown
  • elongate-oval
  • smooth surface
  • shiny
  • distinct, dark brown capitulum

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Food Plants

  • bramble (Rubus sp.)
    is very well accepted by freshly hatched nymphs (L1), older nymphs and adults
  • other plants have not been tested so far

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Behaviour

  • usually passiv during the day
  • if being touched, nymphs and adults try to escape. They either try to drop to the ground (nymphs and adult males) or try to crawl away (adult males and females)
  • matings are common during the night. And males stay with the female for several hours, sometimes even more than one day

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Developement

  • incubation time (HH-incubation on slightly damp sand at 20 - 23 °C) is about 5 months
  • spread some dry moss over the eggs - this will make it much easier for the nymphs to hatch unscathed and it also reduces mould growth to some extend
  • hatching ratio in F1 was very high (> 50%)
  • males will be adult after about 3 months (at 20 – 23°C), females after about 3.5 months
  • egglaying starts after about 2 – 3 weeks
  • about 35 eggs per female and per week
  • adults can live for several months

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Breeding Notes

  • it is  easy to breed this nice and big species
  • as the freshly hatched nymphs are already quite big, therefore the incubation container should be big enough
  • keep the nymphs in a cage with good ventilation, but take care that the humidity does not drop too low
  • a constantly wet paper towel on the floor of the cage helps raising humidity
  • a humidity level of about 60 – 65 % rH is sufficient
  • nymphs can be kept in a Faunabox (or similar cages)
  • move nymphs to a bigger cage as they grow bigger
  • as the adults are very long, a cage of at least 40 x 40 x 70 cm should be provided for 2 - 3 couples
  • generally I advise to keep different phasmid species seperately (overcrowed cages are unfortunately still very common ...)
  • I have never sprayed nymphs or adults with water
  • make shure that nymphs, which are about to undergo their adult moult, do not find places in the cage which would not offer them enough space beneath to moult successfully

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References

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



 

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