No. 1049 / 1 402

Buck moth

Hemileuca maia

痛いだけさわらないで痛いけど、大きな害はないよ。

刺す毛食べもの：植物

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 buck moth is a common North American moth. Its caterpillars are covered in spines that can break off and sting people, so it is good to know what they look like. The caterpillars live on oak trees in eastern parts of the United States, and can also be found in cities.1

すんでいる場所

Eastern United States, from peninsular Florida to New England, and west to Texas and Kansas1

北アメリカ

ホーム

Buck moths are most common in large oak forests. Because their forests are being cleared, they have moved into towns and cities, where live oaks are planted as street trees, such as Baton Rouge and New Orleans in Louisiana. People also meet them at places like the Goshen Scout Reservation in Virginia.1

長さ

6.3 cm (2.5 in)1

最高速度

時速約0.03 km（時速0.02マイル）

陸で, おおまかな予想

何を食べるの？

Caterpillars feed on several kinds of oak, including scrub oak, live oak, blackjack oak, white oak and dwarf chinquapin oak. Adult moths have no mouthparts and cannot feed at all.1

Buck mothの写真 — Buck moth。写真：Gerald J. Lenhard, Lousiana State Univ, Bugwood.org。 CC BY 3.0 us, Wikimedia Commons.

見分け方

Adult moths are dark grey to almost black, with a white band across each wing that has a distinctive eyespot on it.1
Adult females have an all-black body. Males are black except for a rusty red abdomen (the rear part of the body).1
Adults have black legs with small red cuffs near the top, where the leg joins the body.1
Young caterpillars are completely black. Older caterpillars become lighter, and some look almost white.1
Caterpillars are covered in spines. The spines on the top of the body are longer, more numerous and arranged in rows. Fully grown caterpillars reach about 2.5 inches (6.35 cm).1

毒パワー

刺す毛

小さな毛やとげが皮ふの中で折れて、ちくちく刺すよ。

その毒（かむ・刺す毒）はどうなるの？

The spines of the caterpillar are hollow and attached to a poison sac, and small toxic glands along the sides of the body hold the venom. When the spines break off and get into the skin, they can cause stinging, itching and burning, with large red welts. In some people the reaction can lead to anaphylactic shock, a severe allergic reaction that needs urgent medical care. Nausea is also listed as a possible symptom.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。

An increasing number of people each season are stung by these caterpillars, and many of them see a doctor for dermatitis (swelling and inflammation of the skin). Stings are most common where caterpillars have moved into urban areas. Some people are at risk of a severe allergic reaction.1

こわいとき、どうするの？

The caterpillars use their spines as a defence against predators and when they feel in danger. The spines can easily break off when the caterpillar is handled roughly or brushed against.1

毛にさわったら

刺す毛虫の毛には：セロハンテープではがしてから、皮ふを洗おう。こすらないで。
かまれたら：洗って冷やそう。その人の具合が悪くなったり、血が止まりにくかったりしたら、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。
毛にさわったら：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？

おもちゃのブロック2こを1列にならべた長さカタツムリより遅い

Buck moth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？

Buck moth 時速約0.03 km (0.02 mph)

カタツムリ 時速約0.05 km (0.03 mph)

リクガメ 時速約0.3 km (0.19 mph)

知っておく価値あり

データ

Adult buck moths have no mouthparts, so they cannot eat. They live only long enough to find a mate and lay eggs.1

Newly hatched caterpillars march in a straight line, following one leader. If the leader is removed, the group becomes confused and restless until it either returns or the group chooses a new leader.1

Before they pupate, some buck moths can stay in the pupa stage for up to two years before emerging as adults.1

Females release a chemical scent, called a pheromone, to attract males. Males that fly erratically are responding to this scent.1

毒のエキスパート向け

学名: Hemileuca maia
グループ: 毛虫と虫
家族: Saturniidae2
ならびかえ: Lepidoptera
大陸: 北アメリカ
赤ちゃん: Females lay about 150 eggs per generation in a tight ring around an oak twig, and the eggs stay there through the winter until spring.1
野生でのようす: Endangered in Connecticut for the narrower subspecies Hemileuca maia maia1
人への危険: 2 / 5: 痛い3