No. 0679 / 1 402

Cupboard spider

Steatoda grossa

名前について： Its names 'false black widow' and 'false widow' come from how much it looks like the black widow spider.1

無害人には無害。心配いらないよ。

クモ

かむ食べもの：肉

人への危険: 軽いハチに刺されたくらいか、それ以下。人にはほぼ無害。

The cupboard spider is a common house spider that lives in dark corners and builds messy, three-dimensional webs. It is often mistaken for the dangerous black widow, but its bite is usually minor. Its name shows that it is found in many parts of the world, including Europe, temperate Asia and areas where it has been introduced.1

すんでいる場所

Native to Europe and much of temperate Asia. Introduced to North and South America, Macaronesia, Africa, New Zealand and Hawaii.1

ヨーロッパ

ホーム

It constructs three-dimensional webs in dark places. In South Africa it has been found in grassland, fynbos, Nama Karoo and savanna biomes.1

長さ

1.1 cm (0.4 in)1

最高速度

時速約0.86 km（時速0.53マイル）

陸で, おおまかな予想

何を食べるの？

It builds a cobweb of sticky silk fibres and depends mostly on vibrations travelling through the web to find prey. It reportedly preys on black widows.1

Cupboard spiderの写真 — Cupboard spider。写真：Ryan Kaldari, no known copyright restrictions (public domain)。 Public domain, iNaturalist.

見分け方

Adult females are 6 to 10.5 mm long, dark coloured and round-bodied, with a bulbous abdomen.1
Typical colour ranges from purplish brown to black, with light-coloured markings.1
It has no bright red hourglass pattern or other bright, distinctive markings.1
Males are thinner and can be nearly as long as females, at 4.1 to 10 mm.1
Sexually mature males have lighter, more reddish legs than females.1

よくまちがえられるのは： It is often confused with black widows and redbacks (Latrodectus species), which have a bright red hourglass pattern that this spider lacks. Steatoda borealis is similar in shape but slightly smaller and found in colder climates. It has coloured markings on the top of the abdomen rather than the underside.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 bite is minor in humans and has no long-lasting effects. Symptoms can include blistering at the bite site and pain. A few cases have included fever, nausea, sweating and a general feeling of being unwell that lasted several days.1

人にとってどれくらい危険？

人への危険: 軽いハチに刺されたくらいか、それ以下。人にはほぼ無害。

The spider is not aggressive. Most injuries to people happen when a spider is accidentally squeezed or pinched and bites in defence. It is possible that a spider may bite a finger pushed into its web by mistake.1

いい知らせ：お医者さんには、これに効く薬（抗毒素）か治療法があるよ。1

こわいとき、どうするの？

It usually flees when a large creature comes near, and it bites when it is squeezed or pinched.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？

きみのつめの上にのるくらい小さい

Cupboard 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)

Cupboard spider 時速約0.86 km (0.53 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

Director Sam Raimi chose this spider to play the radioactive spider that bites Peter Parker in the 2002 film Spider-Man. The filming spider was painted with red and blue makeup.1

The spider reportedly preys on black widows, which can make it useful to have around.1

It can go several months without feeding, as long as it has access to water.1

Females can live up to six years, while males typically live 1 to 1.5 years and often die shortly after mating.1

うそ・ほんとう

うそ： It is a dangerous widow spider, just like the black widow.

ほんとう： Its bite is minor in humans and has no long-lasting effects, although it can cause pain, blistering and, in a few cases, several days of feeling unwell.1

毒のエキスパート向け

学名: Steatoda grossa
グループ: クモ
家族: Theridiidae2
ならびかえ: Araneae
大陸: ヨーロッパ
赤ちゃん: A well-fed female can lay three or more egg sacs each year, with 40 to 100 eggs in each sac. The eggs usually hatch within a month at normal household temperature and humidity, and the spiderlings are independent from the moment they hatch.1
寿命: 約6年1
人への危険: 1 / 5: 軽い3