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Redback spider

Latrodectus hasselti

Tentang nama: It is called the redback because of the distinctive red stripe along the top of its abdomen.1

Perlu jumpa doktorJarang membawa maut, tetapi gigitannya perlu dirawat doktor.

Labah-labah

GigitanMakan: Daging

Bahaya kepada manusia: SeriusGigitannya perlu dirawat doktor. Kematian sangat jarang berlaku.

The redback spider is a highly venomous spider. It is thought to come from Australia, but it now also lives in Southeast Asia, Japan and New Zealand. It often lives close to people, in warm, sheltered places in and around homes, so it matters a great deal for safety.1

Hidup di

Australia, Southeast Asia, Japan and New Zealand; established colonies also in the United Arab Emirates1

Australia & Oceania

Laman utama

It lives in warm, sheltered places, commonly near or inside human homes and other buildings. Food scraps and lights attract the insects it hunts, which brings the redback closer to people.1

Panjang

1 cm (0.4 in)1

Kelajuan maksimum

kira-kira 0.92 km/j (0.57 mph)

Di darat, anggaran kasar

Apa yang ia makan?

It mainly catches insects, but also spiders, small lizards and occasionally even snakes or a mouse that become caught in its web. It squirts sticky silk over the prey, bites it repeatedly, wraps it in silk, then sucks out its liquefied insides back at its retreat.1

Gambar Redback spider — Redback spider. Gambar: Paul Whitington. CC BY 4.0, iNaturalist.

Cara mengenalinya

The adult female has a round, shiny black body with a red stripe on the top of the abdomen.1
Underneath, she has an hourglass-shaped red or orange streak.1
The female's body is about 1 cm long, with slender legs.1
The male is much smaller, 3 to 4 mm long, light brown with white markings on the upper abdomen and a pale hourglass marking underneath.1
Its web is an irregular, untidy tangle of strong silk, usually in a warm, sheltered spot.1

Sering dikelirukan dengan: The false redback spider (Steatoda capensis) has a similar build but is uniformly black or plum-coloured, and it has no red stripe on its abdomen.1

Kuasa bisa

Gigitan

Bisa keluar melalui taring atau giginya apabila ia menggigit.

Apa kesan bisanya?

The venom is neurotoxic to vertebrates, meaning it attacks the nerves, and it causes a condition called latrodectism. Pain starts around the bite and typically becomes severe, spreading up the bitten limb and lasting for over 24 hours. Localised sweating in patches of skin is highly indicative of latrodectism, and nausea, vomiting, headache and agitation may indicate severe envenomation.1

Berapa bahaya ia kepada manusia?

Bahaya kepada manusia: SeriusGigitannya perlu dirawat doktor. Kematian sangat jarang berlaku.

The redback is one of the few spider species that can seriously harm humans. Because it often lives in buildings, it is responsible for a large number of serious spider bites in Australia.1

Berita baik: doktor ada ubat (antibisa) atau rawatan untuk ini.1

Apa yang ia buat apabila takut?

Its bright scarlet markings may serve as a warning to potential predators.1

Jika ia menggigit

Basuh tempat gigitan dan letakkan pek ais untuk menghilangkan sakit. Dapatkan bantuan perubatan jika sakitnya kuat, merebak atau orang itu berasa tidak sihat.

Sentiasa hubungi nombor kecemasan dahulu (112, 000, 911). Ini panduan pertolongan cemas umum, bukan nasihat perubatan. Asas pertolongan cemas

Kekal selamat

Jangan sesekali sentuh, tangkap atau usik haiwan liar, walaupun yang kecil, dan walaupun ia nampak tidur atau mati.
Beri ia ruang. Jika kamu terjumpa, bertenang, undur perlahan-lahan dan biarkan ia pergi.
Jika ia menggigit kamu: bertenang, jangan bergerak, hubungi nombor kecemasan (112, 000, 911) atau pergi ke hospital dengan segera. Ingat rupanya, gambar boleh membantu.

Ia bukan mahu memburu kamu. Ia guna bisanya untuk menangkap makanan atau melindungi diri, dan ia lebih suka bersembunyi. Lagi tentang keselamatan

Di mana di dunia?

Afrika Asia Eropah Amerika Utara Amerika Selatan Australia & Oceania

Berapa besar ia?

Berapa panjang ia?

cukup kecil untuk duduk di atas kuku kamu

Berapa besar Redback spider berbanding KAMU?

Hanya matematik dalam pelayar kamu. Tiada apa yang disimpan atau dihantar ke mana-mana.

Berapa laju ia?

Kura-kura darat kira-kira 0.3 km/j (0.19 mph)

Redback spider kira-kira 0.92 km/j (0.57 mph)

Orang berjalan kira-kira 5 km/j (3.1 mph)

berguna untuk diketahui

Fakta

A male redback can successfully mate with a female katipō, a related New Zealand spider, producing hybrid offspring.1

Males often mate with a female who may then eat them, a behaviour called sexual cannibalism that many arachnids show while mating.1

In laboratory tests, redbacks survived an average of 100 days, and sometimes over 300 days, without food.1

After mating, a female can store sperm for up to two years and use it to fertilise several clutches of eggs.1

Spiderlings and larger females steal food from other spiders' webs, and spiderlings sometimes eat their less active siblings.1

Untuk pakar bisa

Nama saintifik: Latrodectus hasselti
Kumpulan: Labah-labah
Keluarga: Theridiidae2
Susunan: Araneae
Benua-benua: Australia & Oceania
Anak: Each clutch averages 250 eggs, housed in a round white silken egg sac. Spiderlings hatch after about 8 days, though cooler temperatures can greatly slow this.1
Jangka hayat: kira-kira 3 tahun1
Bahaya kepada manusia: 3 / 5: Serius3

Dari mana fakta datang

Redback spider (Wikipedia (CC BY-SA 4.0))
Latrodectus hasselti (iNaturalist): nama dan pengelasan.
Venom Wiki: tahap bahaya, saiz biasa dan anggaran kelajuan adalah penilaian kami sendiri. Lihat cara kami mengiranya: Cara kami menilai bahaya.

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