Sipyloidea biplagiata "Cuc Phuong"
(by Bruno Kneubuehler)
 

OrderPhasmatodea
 
SuborderVerophasmatodea 
InfraorderAnareolatae 
FamilyDiapheromeridaeKirby, 1904
SubfamilyNecrosciinaeBrunner v. Wattenwyl, 1893
TribeNecrosciiniBrunner v. Wattenwyl, 1893
GenusSipyloideaBrunner v. Wattenwyl, 1893
SpeciesS. biplagiataRedtenbacher, 1908

  
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Allgemeine Bemerkungen

  • 2011 – first successful culture by Bruno Kneubühler
  • 2012 – this species is being distributed as Sipyloidea biplagiata „Cuc Phuong“

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Origin

  • Joachim Bresseel (Belgium) and Jérôme Constant (RBINS) collected this species in July 2011 in Cuc Phuong,  Vietnam (No. 63, "Sipyloidea biplagiata", Vietnam 2011)

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Females

  • typical phasmids
  • about 10 – 11 cm
  • straw-coloured, few females were reddish-brown
  • light yellow spots on the forewings (tegmina)
  • antennae are longer than forelegs and light-dark annulated
  • thorax surface is dorsally strongly granulated (especially for mesothorax)
  • long cerci
  • the membranous part of the hind wings (anal region of alae) is transparent and it's base is red

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Males

  • very typical and thin phasmids
  • about 8 – 8.5 cm
  • their colourations is a bit more pronounced than the females
  • mainly light brown with darker markings
  • coloration is rather consistent amongst males
  • strongly yellow dots on the forewings (tegmina)
  • antennae are longer than forelegs and light-dark annulated
  • the membranous part of the hind wings (anal region of alae) is transparent and it's base is red

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Nymphs

  • 20 mm (L1)
  • green or yellowish-green (L1)
  • antennae with white tips
  • distinction between ♀/♂ for young nymphs is rather difficult by the naked eye. But by L4 / L5 it is possible (see photos on the right)

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Eggs

  • elongate – oval
  • about 4 x 1.5 mm
  • brown mottled
  • hairy, matt
  • egg lid (operculum) is beveled compared to the egg's longitudinal axis
  • no distinct capitulum present

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Food Plants

  • freshly hatched nymphs, older nymphs and adults feed very well on bramble (Rubus sp.)

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Behaviour

  • nymphs don't like to be touched and try to crawl away, but again freeze after a few steps
  • older nymphs and adults usually not hide out on the leaves or stems of the food plants, but rather on the walls of the cage. Could this imply that they hide out in the wild during the day on tree trunks or thicker branches ….?
  • both males and females can fly
  • especially the adult males try to escape flying quickly when they feel threatened
  • the males ability to fly is rather impressive (for phasmids). They can fly for rather long distances, flying upwards is easy for them and they can even land headfirst on the ceiling. So far I could not observe this in any other phasmid species
  • adult females mainly try to escape by crawling away when they feel threatened. They can fly, but do so rather seldom – and when they do, then only for short distances
  • after touching adult specimens I have noticed a grassy smell, which implies that they produce a defensive spray (which could be irritating to the human eyes)
  • matings occur during the night and are short, males do not stay together with the same female for a longer time period

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Developement

  • incubation time (HH-incubation on slightly damp sand at 20 - 23 °C) is about 8 – 9 weeks, so rather short
  • spread some dry moss over the eggs, especially when the eggs are detached from material to which they have been glued to. This will make it much easier for the nymphs to hatch unscathed and it also reduces mould growth to some extend
  • hatching ratio was very high (> 50%)
  • males will be adult after about 3 months (at 20 – 23°C), while females will be adult after about 4 months
  • females start laying eggs after 2 -3 weeks
  • eggs are glued to anything in the cage (leaves, stems, cage walls and floor). Yet it is easy to detach the eggs from the substrate carefully
  • about 10 – 15 eggs per female and week
  • adult males seem to be rather short lived (about 1 – 3 months), while adult females can live for several months

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Breeding Notes

  • a very easy to keep species
  • as they are flying well, one should be careful with open windows in the breeding room
  • 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
  • nymphs can be kept in a Faunabox (or similar cages)
  • move nymphs to a bigger cage as they grow bigger
  • 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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