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Darwin's bark spider

Caerostris darwini

Malunga negama: 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

AsinangoziAsinangozi ebantwini. Akukho nto yokukhathazeka ngayo.

Izigcawu

UkulumaSitya: Izinambuzane

Ingozi ebantwini: KuthambileNjengokuhlatywa yinyosi okanye ngaphantsi. Phantse asinangozi ebantwini.

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

Sihlala

Madagascar, found in Andasibe-Mantadia National Park1

IAfrika

Ekhaya

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

Ubude

2,2 cm (0,9 in)1

Esona santya siphezulu

malunga ne-1,1 km/h (0,68 mph)

Emhlabeni, uqikelelo nje

Sitya ntoni?

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

Ifoto ka-Darwin's bark spider — Darwin's bark spider. Ifoto: Matjazgregoric. CC BY-SA 4.0, iNaturalist.

Indlela yokusiqaphela

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

Sidla ngokubhidaniswa no: 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

Amandla etyhefu yokuluma nokuhlaba

Ukuluma

Ityhefu iphuma ngamazinyo aso etyhefu okanye ngamazinyo aso xa siluma.

Siyingozi kangakanani ebantwini?

Ingozi ebantwini: KuthambileNjengokuhlatywa yinyosi okanye ngaphantsi. Phantse asinangozi ebantwini.

Ukuba siyaluma

Hlamba indawo elunyiweyo uze ubeke ipakethi yomkhenkce kuyo ngenxa yeentlungu. Fumana uncedo lwezonyango ukuba iintlungu zinamandla, ziyasasazeka okanye umntu uziva engaphilanga kakuhle.

Soloko utsalela inombolo kaxakeka kuqala (112, 000, 911). Esi sisikhokelo soncedo lokuqala ngokubanzi, asilocebiso lwezonyango. Iziseko zoncedo lokuqala

Hlala ukhuselekile

Ungaze uchukumise, ubambe okanye uqhule isilwanyana sasendle, nokuba sincinci, kwaye nokuba sibonakala silele okanye sifile.
Sinike indawo. Ukuba udibana naso, hlala uzolile, buyela umva kancinci kwaye usiyeke sihambe ngendlela yaso.
Ukuba siyakuluma: hlala uzolile, musa ukushukuma, tsalela inombolo kaxakeka (112, 000, 911) okanye uye esibhedlele ngokukhawuleza. Khumbula ukuba sasikhangeleka njani, ifoto iyanceda.

Asikuzingeli. Sisebenzisa ityhefu yaso ukubamba ukutya okanye ukuzikhusela, kwaye singakhetha ukuzimela. Okungakumbi malunga nokuhlala ukhuselekile

Phi emhlabeni?

IAfrika IAsiya IYurophu uMntla Melika uMzantsi Melika IOstreliya neOceania

Sikhulu kangakanani?

Side kangakanani?

malunga nobude besiqhobosho sephephasingagqiba iimitha ezili-100 ngemizuzwana eyi-330 (owona mntu ukhawulezayo udinga i-9,6)

U-Darwin's bark spider mkhulu kangakanani xa uthelekisa NAWE?

Zizibalo nje kwibhrawuza yakho. Akukho nto igcinwayo okanye ithunyelwa naphi na.

Sikhawuleza kangakanani?

Ufudo malunga ne-0,3 km/h (0,19 mph)

Darwin's bark spider malunga ne-1,1 km/h (0,68 mph)

Umntu ohambayo malunga ne-5 km/h (3,1 mph)

kufanelekile ukwazi

Iinyaniso

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

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

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

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

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

Kwiingcali zetyhefu

Igama lenzululwazi: Caerostris darwini
Iqela: Izigcawu
Usapho: Araneidae2
Ucwangco: Araneae
Amazwekazi: IAfrika
Ingozi ebantwini: 1 / 5: Kuthambile3

Apho iinyaniso zivela khona

Darwin's bark spider (Wikipedia (CC BY-SA 4.0))
Caerostris darwini (iNaturalist): amagama nokuhlelwa.
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