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Extatosma tiaratum

Extatosma tiaratum


Extatosma tiaratum L4-5 and adults

Brown morph. Limited Quantity

order Phasmatodea
suborder Verophasmatodea  
infraorder Anareolatae  
family Phasmatidae Gray, 1835
subfamily Extatosomatinae Sellick 1997
Tribus Extatosomatini Sellick 1997
genus Extatosoma Gray, 1833
kind Extatosoma tiaratum (Mayleay 1826)


general remarks

  • Macleay described this kind 1826 as Phasma tiaratum
  • Synonyms: Ectatosoma tiaratum , Gray 1835
  • for further taxonomic information → Phasmida Species Files
  • Extatosoma tiaratum was one of the first stick insect species bred in Europe, since the early 1960s,
  • Over the years various Extatosoma tiaratum strains of different origin from Australia were then introduced, and unfortunately mixed by unserious and naive breeders. This even though there are between geographically separated populations certainly more or less pronounced differences
  • for the moment all are Extatosma populations of Australia in styleExtatosoma tiaratum summarized. Whether it actually but is only one type or several types or subtypes, future DNA studies will show
  • the tribe Extatosoma tiaratum "Innisfail" is a pure strain which is not to be mixed with different strains or even unknown provenance


Breed History

  • 2014 - offspring of the pure strain Extatosoma tiaratum "Innisfail" by Bruno Kneubühler
  • 2015 - as Extatosoma tiaratum leave "Innisfail" to other breeders



  • Eggs were collected from Tomboy females (Innisfail, Queensland, Australia) by Jack Hasenpusch



  • Body length about 12-14 cm
  • the body length of females is only about measurable since the females almost always bend the abdomen upwards
  • Coloration of the females is different
  • dark brown, red brew, pale brew and greenish female
  • many, green thorns on the head, thorax, abdomen and legs
  • short antennae
  • short front and rear wings
  • thumb-thick abdomen (if full of eggs)
  • lateral, leaf-shaped, spined extensions especially on 5th and 6th abdominal segment
  • strong leaf-shaped extensions on the legs
  • Subgenital plate approximately the same length as the abdome



  • Body length about 9 - 10.5 cm
  • Coloring of the males is very uniform
  • short, brown thorns on head, chest and legs
  • Antennas in about as long as the front legs
  • clearly recognizable ocelli (simple eyes) on the head
  • well-developed, long wings reach which almost to the abdome
  • lateral, leaf-shaped extensions on the 5th - 7th abdominal segment
  • strong leaf-shaped extensions on the legs
  • membranous area of ​​the rear wing checkerboard chiaroscuro
  • a light-green area near the neck of the hind wings



  • Length (L1) about 17 mm, but difficult to measure
  • short, brown monochrome antennas
  • dark brown with lighter dorsal drawing on the Mesothorax
  • ──────────────


  • about 5 x 5 mm
  • plump
  • bright light-dunkebraun marbled
  • also there are almost white and almost black eggs
  • Surface smooth and shiny
  • significantly from Eideckel (operculum) Detachable Capitulum available
  • Micropylar plate long and usually light in color


fodder plants

  • It highly recommended the sheet edges for larvae in L1 cut away, if possible 1x per week
  • the plants and the water in which they should be regularly be auszuwechselt
  • Blackberry ( Rubus spp.)
    Is very well accepted by nymphs and adults
  • Hasel ( Coryllus avellana )
    is very well accepted by nymphs and adults
  • Salal ( Gaultheria shallon )
    is very well accepted by nymphs and adults
  • Eucalyptus
    is the natural food plant
  • elsewhere other forage plants are mentioned, such as oak ( Quercusspp.) , guava ( Psidium guajava )
  • very likely is a wide-range of food plants of this type well received



  • fresh geschüpfte larvae are very active, and running around a lot
  • after a few days they are quiet when they have started to eat
  • already these larvae often take the typical for this genre entertainment, with aufwärtsgebogenem abdomen, a
  • older larvae and adult animals behave more passively during the day and eat preferably during dusk / night. However, even during the day activity is observed repeatedly
  • Nymphs and adults dropped if they feel threatened by touch often, but mostly solidified after a few steps back
  • particularly adult females seek a potential attacker also pinch between the hind legs
  • the animals exude no visible defensive secretions. However, a very charakteristiescher odor when handling these animals can be perceived, which may also be attributed to a secretion on the prothorax glands
  • adult males could fly, do make but rarely
  • Fixtures are often and the couples can also 1 - 2 remain days together
  • the eggs are thrown away by the female with a graceful curve of the abdomen (eggs can break when they hit glass or similar hard materials terrariums)



  • the incubation time ( HH-incubation on slightly damp sand at 20 - 23 ° C) is about 4 - 5 months
  • the LTD method (low-temperature-induced-diapause) was successfully applied to this type. We tested a LTD-period of 3 months at 8 - 10 ° C, the slip rate then was high
  • for information, at Phasmiden it is not uncommon that even a long time after the first larvae can still slip further larvae
  • dry pine needles ( Pinus sylvestris ) spread over the eggs - this facilitates the larvae that hatch intact
  • the slip rate is usually high
  • Males are adult after about 3.5 months (at room temperature), females after about 4 - 4.5 months
  • females start after about 3 weeks of oviposition
  • about 20-25 eggs a week and females
  • the adult animals can live for several months


Comments for breeding

  • this type should be separately held in a cage (like most phasmid species).The breeding success is greater than in cages with several types, which are too often overcrowded
  • Difficulty = 1                 (1 = very easy / 5 = very difficult)
  • the larvae separately from the adult animals raise. This allows a better overview of the healthy growth of the larvae, protecting them from interference from the adult animals much larger (for example, during the molting)
  • Rearing in a cage with plenty of ventilation areas
  • a humidity of 60 +% RH (for nymphs and adults) seems to be sufficient for healthy development
  • Screen Cages are very well suited for rearing
  • larger larvae if necessary translated into correspondingly larger breeding cages
  • a cage of about 30 x 30 x 60 cm in height is large enough for about 3 - 4 adult couples
  • there are 2 (- 3) requires cages for breeding this kind - a cage for the little larvae, possibly another cage for the older larvae and a cage for adult animals.
  • small larvae about 2 - 3 times a week with water spray (no chlorinated water use). The water should be able to dry again within a short time (good ventilation of the terrarium important)
  • in older larvae and adult animals (and their cage) is a spraying with water is not necessary, but does not hurt
  • particularly in adult molt, make sure that the animals no opportunity can be found near the cage floor to hang for moulting. If necessary, the vessel for the forage crops should therefore be raised to a pedestal




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