Catastrophic flying disaster: Why do they always face us straight down?

Do you often get cockroaches flying into your head or face? If so, we must blame us for being too prominent in their eyes.

Do not know when ever cockroaches and people become two unkind enemies. The person who saw the cockroach felt horrified and hideous. Cockroaches detect people, then run away from math, find their escape route.

And the moment of heartbeat is when this foul, dirty insect spreads its wings and flies towards us.

Flying cockroaches - disaster no one wants to encounter.

Ten times like one, no matter how hard we try to avoid it, it is difficult for us to prevent ourselves from becoming a landing site for this cursed animal. In those boredom, have you ever wondered why cockroaches keep staring at their heads, and on their backs?

Speaking a little about cockroaches, this nasty animal has appeared on our planet about 320 million years ago. That is, they were present before the dinosaurs, and still persisted after the giant animals died.

Today, around the world there are about 5,000 species of cockroaches, of which 30 species live near humans. Each species has its own characteristics, but most cockroaches are active at night, and in the daytime, find dark, humid places such as alcoves, interstitials, gutters . for shelter. No blame for the cockroach relative and the term has the scientific name Blattodea, in Latin means "alien sunshine insects".

However, cockroaches close to us are attracted to light. And seemingly unrelated, but this is the key to why they always aim directly at the victim's face and respond like that.

Cockroaches are able to respond very well to people's faces.

Dr Coby Schal, an entomologist from Arizonda State University (USA) explains: "Cockroaches fly to glowing objects . When people stand where there are light sources behind our back, head and face create an aura, like a solar eclipse or eclipse ".

"This insect is attracted to that aura."

While other insects like mosquitoes, aphids or fleas that sniff people rely on carbon dioxide that our bodies release, cockroaches can't do this.

"There is no scientific research showing that cockroaches attack people because we emit CO2," Dr Schal said.

Schal said, Oriental cockroaches are the most light-loving species. They are extremely fond of street lights, television screens and other natural light sources.

In Vietnam, the cockroaches that we often encounter are American cockroaches , also known as cockroaches .

The house cockroaches are not too much in love with light like oriental cockroaches, but they are very violent and "like" living near people. With a wide wingspan and very active flying, it is not difficult to choose them as landing places.