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Ikhathuni ka-Darwin's bark spider
Inombolo 0714 kwezingu-1 402

Darwin's bark spider

Caerostris darwini
Mayelana 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
AkunangoziAkunangozi ebantwini. Akukho okufanele ukhathazeke ngakho.
Izicabucabu UkulumaSidla: Izinambuzane
Ingozi ebantwini: KuncaneNjengokuhlatshwa yinyosi noma ngaphansi. Cishe akunangozi 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

Ihlala
Madagascar, found in Andasibe-Mantadia National Park1
I-Afrika
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
Ijubane eliphezulu
cishe 1.1 km/h (0.68 mph)
Emhlabathini, isiqagela nje
Sidlani?
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
Ngempela!Isithombe sika-Darwin's bark spider
Darwin's bark spider. Isithombe: Matjazgregoric. CC BY-SA 4.0, iNaturalist.

Indlela yokusibona

  • 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

Ivamise ukudidaniswa ne: 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 obuthi

Ukuluma

Ubuthi buphuma ngamazinyo aso obuthi noma ngamazinyo uma siluma.

Siyingozi kangakanani ebantwini?

Ingozi ebantwini: KuncaneNjengokuhlatshwa yinyosi noma ngaphansi. Cishe akunangozi ebantwini.

Uma siluma

  • Geza inxeba lokulunywa bese ubeka iphakethe leqhwa phezu kwalo ngenxa yobuhlungu. Thola usizo lwezokwelapha uma ubuhlungu bunamandla, busabalala noma umuntu ezizwa engaphilile.

Njalo shayela kuqala inombolo yezimo eziphuthumayo (112, 000, 911). Lokhu kuyiseluleko sosizo lokuqala esijwayelekile, akusona iseluleko sezokwelapha. Izisekelo zosizo lokuqala

Hlala uphephile

  • Ungalokothi uthinte, ubambe noma ugcone isilwane sasendle, ngisho noma sincane, futhi ngisho noma sibukeka silele noma sifile.
  • Sinike isikhala. Uma uhlangana naso, hlala uzolile, uhlehle kancane bese usiyeka sihambe ngendlela yaso.
  • Uma sikuluma: hlala uzolile, ungashukumi, shayela inombolo yezimo eziphuthumayo (112, 000, 911) noma uye esibhedlela ngokushesha. Khumbula ukuthi besibukeka kanjani, isithombe siyasiza.

Asikuzingeli wena. Sisebenzisa ubuthi baso ukuze sibambe ukudla noma ukuzivikela, futhi singancamela ukucasha. Okwengeziwe mayelana nokuhlala uphephile

Kuphi emhlabeni?

I-AfrikaI-AsiaI-YurophuINyakatho MelikaINingizimu MelikaI-Australia ne-Oceania

Sikhulu kangakanani?

Side kangakanani?

Darwin's bark spider ubude obucishe bube ngu-2.2 cm (0.9 in)Uhlamvu lwerayisi cishe 7 mm (0.3 in)Uhlamvu lwemali lwe-euro elilodwa cishe 2.3 cm (0.9 in)
side cishe njengesibophi sephephasingahamba amamitha ali-100 ngemizuzwana engu-330 (umuntu oshesha kunabo bonke udinga engu-9,6)

Darwin's bark spider mkhulu kangakanani uma uqhathanisa NAWE?

Yizibalo nje kusiphequluli sakho. Akukho okulondolozwayo noma okuthunyelwa ndawo.

Sishesha kangakanani?

kuhle ukwazi

Amaqiniso

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

Okongoti bobuthi

Igama lesayensi
Caerostris darwini
Iqembu
Izicabucabu
Umndeni
Araneidae2
Ukuhleleka
Araneae
Amazwekazi
I-Afrika
Ingozi ebantwini
1 / 5: Kuncane3

Lapho amaqiniso evela khona

  1. Darwin's bark spider (Wikipedia (CC BY-SA 4.0))
  2. Caerostris darwini (iNaturalist): amagama nokuhlelwa ngezigaba.
  3. Venom Wiki: izinga lengozi, usayizi ojwayelekile nesiqagela sejubane kungokwethu. Bona ukuthi sikubala kanjani: Indlela esilinganisa ngayo ingozi.

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