ecology

What are the species of moths in the family Zygaenidae? Are they poisonous? Are they harmful? What is the purpose of their bright colors?

The Zygae family, exemplified by species like the firefly moth and the bamboo grass moth, is known for its bright, diurnal colors. But do you know why they have such striking colors? It turns out they possess a powerful poison that produces cyanide, and these colors serve as a "warning signal"...

2022.06.28

animal

What's the difference between mountain azaleas and rhododendrons? We'll explain how to distinguish between similar species! Research has revealed that bumblebees are also essential for flowers that are supposedly specialized in attracting butterflies!

The Japanese azalea (Rhododendron kaempferi) is a representative species of wild azalea in Japan, while the Japanese azalea (Rhododendron molle) is famous for being poisonous. Both belong to the Rhododendron genus of the Ericaceae family and are representative species of red wild azaleas, so you might get them confused. However, you can distinguish them by checking the shape of their leaves and how the flowers are arranged. These two species...

2022.06.21

plant

What are the differences between buckwheat (soba), Tartary buckwheat (Tartary buckwheat), and Shakuchiri buckwheat (Shakuchiri buckwheat)? We explain how to distinguish between similar varieties! Is buckwheat's origin in mountainous regions? Why do Japanese people eat it as noodles? Are honeybees the only insects that visit its flowers?

Buckwheat, Tartary buckwheat, and Japanese buckwheat are all species that can be found in Japan, either cultivated or naturalized. Buckwheat, in particular, is indispensable to Japanese people as a noodle dish, but few people can distinguish between these three species as plants. These three species differ in the way their flowers grow, the shape of their fruits, etc.

2022.06.14

plant

Why are the "thighs" of the longhorn beetle Tetragnatha japonica so thick? Was it an evolutionary adaptation to hold down females?! Recent research reveals clues in closely related species! A scientific approach to "sexual conflict."

Are you familiar with the insect known as the "Peach-thick Longhorn Beetle"? It gathers on flowers from spring to early summer and is one of the most commonly seen longhorn beetles in Honshu. Its most distinctive feature is its thick hind legs. Have you ever wondered why this is the case...?.

2022.06.09

animal

What species resembles the egret orchid? The flowers are visited by hawk moths! And not only that, tiny insects called thrips also play an important role in pollination! What is the "Egret Orchid Legend"?

The egret orchid (Habenaria radiata) is a perennial plant that inhabits slightly damp areas and is a popular choice for gardening. Unfortunately, due to the decline of its wetland habitat and illegal harvesting, it is listed as near-threatened on the Ministry of the Environment's Red List. There are many closely related species, and many that share the name "egret orchid," but this particular species has a flattened stem resembling a heron...

2022.06.07

plant

The spines on the spiny grasshopper, which inhabits wetlands, are actually a defense mechanism to protect itself from frogs! A rational defense strategy combined with feigning death!

Are you familiar with the grasshopper known as the spiny grasshopper? It's a relatively common creature in Honshu, especially in rice paddies. Surprisingly, this species has been found to protect itself from predation by frogs through a combination of two mechanisms: spines on its body and a behavior called feigning death...

2022.06.02

animal

What are the differences between Impatiens textorii, Impatiens noli-tangere, and Balsam? We explain how to distinguish between similar species! While the flowers are supposed to be exclusively for bumblebees, many other insects also sneak onto them! The competition between Impatiens textorii and Impatiens noli-tangere was fierce!

Impatiens textorii, Impatiens noli-tangere, and Balsam are three species with boat-shaped flowers. At first glance, all three flowers look similar, and Impatiens textorii and Impatiens noli-tangere are particularly alike, as they sometimes inhabit the same wetlands. However, they can be distinguished by carefully observing the overall hairs and the color and shape of the flowers. Also, just looking at the leaves...

2022.05.29

plant

The rare spider Euphyllia japonica, which preys on its victims by spinning silk from its mouth, can be found in your home!

When you imagine a spider, how do you picture it producing silk? A common misconception is that it produces silk from its mouth. In reality, spiders have organs called "spinnerets" on their abdomen from which they produce silk. Spiders typically don't produce silk from their mouths...

2022.05.26

animal

The "Yamakawa World History Q&A" app is incredibly convenient because you can memorize anytime, anywhere! It's a new era of studying.

Hello everyone, did you know that there's an app called "Yamakawa One-Question-One-Answer World History" that contains all the questions from the book "Yamakawa One-Question-One-Answer World History"? Yamakawa One-Question-One-Answer World History Developer: Imagineer Co.,Ltd. ¥610 posted with AppReach Recently I've been using this...

2022.05.23

history

What are the differences between sunflowers, dwarf sunflowers, and white sunflowers? We'll explain how to distinguish between similar varieties! Is it a myth that sunflowers face the sun? Why are they the national flowers of Russia and Ukraine?

Sunflowers are said to face the sun, giving them a cheerful and bright image, and they are now very familiar plants in Japan. Originally from North America, there are many species, but the types of sunflowers found in Japan are limited, mostly consisting of the common sunflower, dwarf sunflower, and dusty sunflower. Humans and sunflowers...

2022.05.10

plant