Haaniella dehaanii
| Haaniella dehaanii | ||||||||||||
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Haaniella dehaanii , couple |
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| Scientific name | ||||||||||||
| Haaniella dehaanii | ||||||||||||
| ( Westwood , 1859) |
Haaniella dehaanii is a species of ghost from the family Heteropterygidae and a typical representative of the genus Haaniella in terms of physique and lifestyle.
features
Both sexes, like all species of this genus, have many pointed thorns on their bodies and legs. The shortened front wings , designed as tegmina , completely cover the shortened hind wings. Females are light to dark brown in color and of a very compact shape. In particular, the abdomen ( abdomen ) of egg-laying specimens is bulging. The abdomen ends with them in a prickly laying apparatus that surrounds the actual ovipositor . A triangular area in front of the wings is characteristic, which is still beige in the black-brown female nymphs and only light brown in the adult , then brown females. In contrast to the top, the bottom is very vividly drawn. In female nymphs in particular, there are bright orange areas on the undersides of the hind legs , the meso- and metathorax , the intermediate membranes of the abdominal segments and other smaller orange dots on the sterna of the abdomen itself. Females are significantly larger than them at nine to eleven centimeters Male. These are much slimmer, very prickly and only about 6.5 to 7.5 centimeters long. They are predominantly dark brown in color and thus more closely resemble the nymphs in their coloration. With them, the front edge of the tegmina is drawn lightly, which results in two short, light lines as the lateral edge of the wings with the wings that are typically laid out.
Occurrence and way of life
The species is native to Sarawak , Borneo , where it occurs on Serapi Mountain, a few kilometers west of Kuching .
The nocturnal animals hide in the leafy layer of the forest floor during the day. At night they climb up the food plants to feed on them, often eating the leaves directly at the base of the leaf . In case of danger, the species shows the defense patterns typical of all members of the subfamily Heteropteryginae , including rustling wings ( stridulation ) and striking with the thorny hind legs.
Reproduction
About eight weeks after the animals have molted to become adult insects, the females begin to lay eggs. The barrel-shaped to spherical, brown eggs are sunk a few centimeters deep into the ground at night with the laying spike. They are 7 millimeters long and 5.5 to 5.9 millimeters wide. As with most Haaniella species, they have fine bristles so that they appear to have a coarse, velvety surface. The cruciform micropylar plate is difficult to see because of the bristles. The micropyle is located in the lower angle of the cross formed from diagonally extending legs. It can take a whole year for the nymphs to hatch. Another nine months are necessary for these to grow into adults. After that, the animals can live for up to two years, with the productivity of the females gradually decreasing.
Systematics
In 1859, John Obadiah Westwood first described the species as Heteropteryx dehaanii , choosing the specific epithet in honor of the Dutch zoologist Wilhem de Haan . After the species was first transferred to the genus Haaniella , Klaus Günther placed it in 1944 as a subspecies to the somewhat lighter colored and larger species Haaniella grayii . This assignment was canceled by Philip Bragg in 1992 and the species has been considered independent since then. The species described by Josef Redtenbacher in 1906 as Heteropteryx dipsacus was also assigned to Haaniella grayi as a subspecies by Günther . Bragg was able to prove in 1998 that the animals described under this name are Haaniella dehaanii , whereby Heteropteryx dipsacus was recognized as a synonym for the same.
The holotype is an adult female animal in the Natural History Museum in London .
Terrariums
Haniella dehaanii has been in breeding since 1990/91 and is listed by the Phasmid Study Group under PSG number 126.
In addition to temperatures of 22 to 27 ° C, the animals also need a permanently high level of humidity and therefore prefer glass terrariums with little ventilation. The floor should be covered five to ten centimeters high with a slightly damp substrate to allow the eggs to be laid. In addition to blackberry leaves, other rose plants such as oak , firethorn , hazel and ivy are also eaten . In addition, hiding places in the form of pieces of bark or leaves should not be missing.
photos
Eggs
male nymph
female nymph
fresh adult female
swell
- ↑ Oliver Zompro : Specters of the Heteropterygidae family in the terrarium , Reptilia - Terraristik Fachmagazin, No. 24, August / September, Natur und Tier, Münster 2000.
- ↑ a b c d Christoph Seiler, Sven Bradler, Rainer Koch: Phasmids - care and breeding of ghosts, stick insects and walking leaves in the terrarium , bede, Ruhmannsfelden 2000. ISBN 3-933646-89-8
- ^ A b Eugène Bruins: Illustrated Terrarium Encyclopedia - Dörfler Verlag, Eggolsheim 2006, pp. 75–76, ISBN 978-3-89555-423-0
- ^ Paul D. Brock : Phasmida Species File Online . Version 2.1 / 3.5. (accessed on March 23, 2010)
- ^ Phasmatodea page by Oskar V. Conle and Frank H. Hennemann
- ↑ Phasmid Study Group Culture List ( Memento from December 5, 2012 in the web archive archive.today ) (English)
