
Rusty-Patched Bumble Bee
bombus affinis
The Rusty-Patched Bumble Bee (Bombus affinis) is a vital native pollinator of the eastern United States and Upper Midwest, famed for its key role in maintaining wildflower diversity and agricultural productivity. Once a common sight buzzing through grasslands, orchards, and gardens, this species has tragically suffered a catastrophic decline of over 87% in recent decades. As the first bumble bee species to be listed under the U.S. Endangered Species Act, it serves as a powerful symbol for insect conservation efforts across North America. These bees are highly social insects that form annual colonies. In early spring, solitary queens emerge from underground winter hibernation to establish new nests, typically in abandoned rodent burrows. Throughout the summer, diligent workers forage tirelessly, utilizing complex flight and sensory capabilities to gather nectar and pollen. By supporting this delicate pollinator, we protect entire ecosystems that rely on their highly efficient pollination services.
生息地: Typically found in temperate grasslands, open prairies, woodlands, wetlands, and urban parks with abundant wildflowers and nearby abandoned rodent burrows for nesting.
外見
Workers and males of the Rusty-Patched Bumble Bee are identified by a distinctive, reddish-brown patch on the center of their second abdominal segment, which is completely surrounded by yellow. The rest of the abdomen is black, and the thorax is mostly yellow with a black band or patch between the wing bases. The head is entirely black. Queens are significantly larger than workers and do not have the rusty patch, instead displaying a yellow first abdominal segment and a black remainder. Their bodies are round, covered in dense, velvety hair, with a wingspan ranging from 2 to 4 centimeters.

カテゴリ
昆虫レア度
Common
危険度
1/5 · 非常に低い
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おもしろい事実
They are excellent thermoregulators, capable of raising their internal temperature to 30 degrees Celsius (86 degrees Fahrenheit) above the ambient air temperature.
They can fly at speeds of up to 16 kilometers per hour while foraging for nectar and pollen.
They were the first bumble bee species in the United States to be officially added to the federal endangered species list in 2017.
特殊能力
Buzz Pollination
They grasp flowers and rapidly vibrate their flight muscles to release pollen from deep within tubular pores.
Thermal Shivering
They can shiver their flight muscles to generate body heat, allowing them to fly and forage in colder temperatures than many other insects.
Nectar Robbing
When flowers are too deep, they chew a hole at the base of the corolla to feed directly on nectar, bypassing standard pollination.
サイズと詳細
- 長さ
- 1-2 cm
- 翼開長
- 2-4 cm
- 体重
- 0.0001-0.0008 kg
- 寿命
- 0-1 年
- Top Speed
- 16 km/h
- 一度の産卵数
- 10-30
- 抱卵期間
- 3-5 日
食性と食事
Feeds exclusively on pollen and nectar from a wide variety of native wildflowers, shrubs, and agricultural crops.
主な食物
- Wild Bergamot (Monarda fistulosa)
- Goldenrod (Solidago spp.)
- Prairie Clover (Dalea spp.)
- Jewelweed (Impatiens capensis)
- Lupine (Lupinus perennis)
採餌方法
- Foraging
生態系とのつながり
Wild Bergamot
Monarda fistulosa
Provides nectar and pollen, while the bee acts as its primary pollinator.
Ashton Cuckoo Bumble Bee
Bombus ashtoni
The cuckoo bumble bee is an obligate social parasite that invades nests, kills the queen, and forces workers to raise its young.
Meadow Vole
Microtus pennsylvanicus
Creates underground burrows that are later utilized by bumble bee queens to establish their colonies.
特徴
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まだ別名はありません。
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安全性
危険度
1/5 · 非常に低い
まだ特別な安全上の注意はありません。
よくある質問
Rusty-Patched Bumble Beeを見分けるには?
Rusty-Patched Bumble Beeを識別する最も簡単な方法は、Snappit自然識別アプリを使用することです。
Rusty-Patched Bumble Beeの長さは何ですか?
1-2 cm
Rusty-Patched Bumble Beeの翼開長は何ですか?
2-4 cm
Rusty-Patched Bumble Beeの体重は何ですか?
0.0001-0.0008 kg
Rusty-Patched Bumble Beeの寿命は何ですか?
0-1 年
Rusty-Patched Bumble Beeのtop Speedは何ですか?
16 km/h
Rusty-Patched Bumble Beeは何を食べますか?
Feeds exclusively on pollen and nectar from a wide variety of native wildflowers, shrubs, and agricultural crops.
Rusty-Patched Bumble Beeは通常どこに生息していますか?
Typically found in temperate grasslands, open prairies, woodlands, wetlands, and urban parks with abundant wildflowers and nearby abandoned rodent burrows for nesting.
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観察場所

Illinois, US
Anderson Japanese Gardens
ここで見られるかも マルハナバチ, チャイロオビマルハナバチ と アカオビマルハナバチ.
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Iowa, US
Dubuque Millworking Historic District
ここで見られるかも マルハナバチ, ヨウシュヤマゴボウ と ブルーギル.
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Illinois, US
Haight Village Historic District
ここで見られるかも マルハナバチ, チャイロオビマルハナバチ と アカオビマルハナバチ.
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