No. 0727 / 1 402

Tube web spider

Segestria florentina

名前について： The name green-fanged refers to the striking green shine of its fangs (chelicerae), which reflect green light.1

痛いだけ痛いけど、大きな害はないよ。

クモ

かむ食べもの：肉

人への危険: 痛いすごく痛いこともあるけど、深刻になることはほとんどないよ。

The tube web spider is a dark spider that builds a tube-shaped web in cracks in walls and buildings. It began in the Mediterranean region but has spread to many towns in southern Britain and other parts of the world. Its bite is reported to be very painful, so it is worth knowing what it looks like.1

すんでいる場所

Originally the Mediterranean region as far east as Georgia; now many towns in southern Britain, and also Argentina, Australia, several Atlantic islands and Limerick in Ireland1

ヨーロッパ

ホーム

It spins its tube web often in cracks of buildings and prefers south-facing walls, especially brick structures. It has been found in towns, cathedrals and an abbey, including Exeter Cathedral and Westminster Abbey.1

長さ

2.2 cm (0.9 in)1

最高速度

時速約1 km（時速0.62マイル）

陸で, おおまかな予想

何を食べるの？

It waits in the entrance of its tube and touches the silk lines with its front legs. When prey such as nocturnal moths and cockroaches triggers the lines, it is caught, and the spider pulls it into the tube to eat. Bees and wasps are always bitten at the head end, so the sting faces away from the spider.1

Tube web spiderの写真 — Tube web spider。写真：Lmbuga Commons。 CC BY-SA 4.0, iNaturalist.

見分け方

Adults are a uniform black, sometimes with a green shine, especially on the fangs.1
Young spiders (subadults) have a greyish abdomen with a marking.1
It makes a tubular web with six or more silk lines radiating out from the entrance.1
Adults are seen from June to November.1
Females can reach a body length of 22 mm, and males up to 15 mm.1

毒パワー

かむ

かむときに、毒が牙や歯から出るよ。

その毒（かむ・刺す毒）はどうなるの？

The venom contains two neurotoxins, which attack the nerves, and one insecticide. The venom reduces the rate and amount of sodium inactivation, a process in nerve cells. The bite is reported to feel like a deep injection, and the pain can last for several hours.1

人にとってどれくらい危険？

人への危険: 痛いすごく痛いこともあるけど、深刻になることはほとんどないよ。

The bite is reported to be extremely painful, but it is also said to feel like a bee sting, which places it at 2 on the Schmidt sting pain index. The bite has no lasting effects.1

こわいとき、どうするの？

When disturbed while feeding, it retreats further into its tube.1

かまれたら

かまれたところを洗って、痛みには保冷剤をあてよう。痛みが強い、広がる、またはその人の具合が悪いときは、医療の助けを受けて。

まず必ず救急番号（112、000、911）に電話しよう。これは一般的な応急手当の案内で、医療のアドバイスではないよ。応急手当の基本

安全に過ごそう

野生の動物には、小さくても、ねているように見えても、死んでいるように見えても、ぜったいにさわったり、つかまえたり、からかったりしないこと。
近づかないで。出会ったら落ちついて、ゆっくりあとずさりして、そのまま行かせてあげよう。
かまれたら：落ちついて、じっとして、救急番号（112、000、911）に電話するか、急いで病院へ行こう。見た目をおぼえておいてね。写真があると役に立つよ。

きみをねらっているわけじゃないよ。毒はエサをとったり身を守ったりするために使うだけで、本当はかくれていたいんだ。安全に過ごすためにもっと知ろう

世界のどこ？

アフリカアジアヨーロッパ北アメリカ南アメリカオーストラリアとオセアニア

どれくらい大きい？

どれくらい長い？

だいたいゼムクリップくらいの長さ100 mを360秒で走れる（いちばん速い人間は9.6秒）

Tube web spiderは、きみとくらべてどれくらい大きい？

ブラウザで計算しているだけ。何も保存されないし、どこにも送られないよ。

どれくらい速い？

リクガメ 時速約0.3 km (0.19 mph)

Tube web spider 時速約1 km (0.62 mph)

歩いている人 時速約5 km (3.1 mph)

知っておく価値あり

データ

A population in Westminster Abbey has been proposed as a new subspecies, because its fangs are a brighter green and its members are significantly smaller than other European populations.1

Specimens have been found in Exeter Cathedral as far back as 1890.1

Females lay eggs in the bricks of south-facing structures during winter, so a female seen in September or October may already have laid eggs for the next spring.1

It is the largest European segestriid spider.1

In Britain it was probably introduced via seaports, with records going back at least to 1845.1

毒のエキスパート向け

学名: Segestria florentina
グループ: クモ
家族: Segestriidae2
ならびかえ: Araneae
大陸: ヨーロッパ
赤ちゃん: The female lays her eggs inside the tube web. Sometimes she dies after the spiderlings hatch, and they may eat their mother.1
人への危険: 2 / 5: 痛い3