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Setshwantsho sa khathune sa Darwin's bark spider
No. 0714 ho 1 402

Darwin's bark spider

Caerostris darwini
Ka lebitso: It was named in honour of the naturalist Charles Darwin, on 24 November 2009, exactly 150 years after The Origin of Species was published.1
Ha e na kotsiHa e na kotsi ho batho. Ha ho letho la ho tshwenyeha.
Dikgo Ho lomaE ja: Dikokoanyana
Kotsi ho batho: E bobebeJwaloka ho hlajwa ke notshi kapa ho fetang moo. Ha e na kotsi ho batho.

Darwin's bark spider is an orb-weaver that builds the largest orb webs ever seen. It lives in the forests of Madagascar, where it hangs its web over rivers and lakes. Scientists found it in 2009, and it has unusually tough silk.1

E phela
Madagascar, found in Andasibe-Mantadia National Park1
Afrika
Lapeng
Builds its web directly above rivers or the water of lakes, a habitat no other spider is known to use. Its webs are large enough to be noticed from a distance.1
Bolelele
2,2 cm (0,9 in)1
Lebelo le phahameng
e ka bang 1,1 km/h (0,68 mph)
Naheng, kakanyo feela
E ja eng?
Catches insects, including mayflies, that fly over the water and become caught in its web. One web has been seen holding up to 32 mayflies at a time.1
Ka nnete!Foto ya Darwin's bark spider
Darwin's bark spider. Foto: Matjazgregoric. CC BY-SA 4.0, iNaturalist.

Ho e tseba jwang

  • Females are largely black, with white hairs on the body and legs.1
  • The top of the front body section has two pairs of raised humps, one at the sides and one towards the back.1
  • Females are about 1.8 to 2.2 cm long, while males are around 0.6 cm.1
  • Males are redder and lighter brown, with white hairs and red, hairless leg segments (femora).1
  • Webs are very large, up to 2.8 square metres, and are strung over water.1

Hangata e ferekanngwa le: Other Caerostris species live in the same region of Madagascar. Darwin's bark spider has clearly separated epigynal chambers (parts of the female's genital plate) with a pair of hooks at the back, which the other species from the region do not have.1

Matla a chefo

Ho loma

Chefo e tswa ka meno a yona a chefo (fangs) kapa ka meno a mang ha e loma.

E kotsi hakae ho batho?

Kotsi ho batho: E bobebeJwaloka ho hlajwa ke notshi kapa ho fetang moo. Ha e na kotsi ho batho.

Haeba e loma

  • Hlatswa moo e lomileng teng mme o bee pakete ya leqhwa hodima teng bakeng sa bohloko. Fumana thuso ya bongaka haeba bohloko bo le matla, bo phatlalla kapa motho a ikutlwa a kula.

Kamehla letsetsa nomoro ya tshohanyetso pele (112, 000, 911). Ena ke tataiso e akaretsang ya thuso ya pele, hase keletso ya bongaka. Metheo ya thuso ya pele

Dula o bolokehile

  • O se ke wa ama, wa tshwara kapa wa tena phoofolo ya naheng, leha e le e nyenyane, le leha e shebahala e robetse kapa e shwele.
  • E fe sebaka. Ha o kopana le yona, dula o kgutsitse, kgutlela morao butle mme o e tlohele e tsamaye ka tsela ya yona.
  • Haeba e nngwe e o loma: dula o kgutsitse, o se ke wa sisinyeha, letsetsa nomoro ya tshohanyetso (112, 000, 911) kapa o ye sepetlele kapele. Hopola hore e ne e shebahala jwang, foto e a thusa.

Ha e o batle. E sebedisa chefo ya yona ho tshwara dijo kapa ho itshireletsa, mme e kgetha ho ipata. Ho eketsehileng ka ho dula o bolokehile

Hokae lefatsheng?

AfrikaAsiaYuropaAmerika LeboyaAmerika BorwaAustralia le Oceania

E kgolo hakae?

E telele hakae?

Darwin's bark spider bolelele ba e ka bang 2,2 cm (0,9 in)Thollo ya raese e ka bang 7 mm (0,3 in)Tjhelete ya tshepe ya euro e le nngwe e ka bang 2,3 cm (0,9 in)
e telele jwaloka klipi ya pampirie ka matha metara e 100 ka metsotswana e 330 (motho ya potlakang ka ho fetisisa o hloka 9,6)

Darwin's bark spider e kgolo hakae ha e bapiswa le WENA?

Ke dipalo feela ka hara sebatli sa hao. Ha ho letho le bolokwang kapa le romelwang kae kapa kae.

E potlaka hakae?

ho molemo ho tseba

Dintlha

1

Its silk is the toughest biological material ever studied. It is over ten times tougher than a similar amount of Kevlar.1

2

Its web is the largest orb web ever observed, covering up to 2.8 square metres. Its bridge lines can span up to 25 metres.1

3

The spider uses a set of web-building behaviours that are unknown in other spiders. It releases bridge silk into the air so the wind carries it across the water.1

4

Females are much larger than males, sometimes many times heavier. This is one of the most extreme size differences between the sexes in spiders.1

5

Flies that feed on its catches have been found living alongside it, and the spider sometimes chases them away.1

Bakeng sa ditsebi tsa chefo

Lebitso la saense
Caerostris darwini
Sehlopha
Dikgo
Lelapa
Araneidae2
Tatelano
Araneae
Dikontinente
Afrika
Kotsi ho batho
1 / 5: E bobebe3

Moo dintlha di tswang teng

  1. Darwin's bark spider (Wikipedia (CC BY-SA 4.0))
  2. Caerostris darwini (iNaturalist): mabitso le tlhophiso.
  3. Venom Wiki: boemo ba kotsi, boholo bo tlwaelehileng le kakanyo ya lebelo ke tsa rona. Bona kamoo re di balang ka teng: Kamoo re lekanyang kotsi ka teng.

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