Girls mostly like fluffy, cute little animals and hate all kinds of bugs and reptiles. Among the bugs that girls are most afraid of, spiders, cockroaches, and caterpillars must be able to rank up. In fact, not only girls, many male compatriots are also afraid of spiders, I have a friend around me who saw spiders can pop up a few meters away on the spot, and the sensitivity of the hands is impressive.
In most people's eyes, spiders are ugly, have many hairy legs, and like to lie in a spider web in a daze. In particular, the cobwebs are often dirty and tattered, and the broken winged limbs of other insects are occasionally hung on them, which can be said that the spider feels quite dark.
But it is not appropriate to say that the spiders are all ugly and stupid, and there are many dexterous and beautiful little spiders living around us - jumping spiders.
Menemerus bivittatus
Jumping spiders are widely distributed throughout China, whether it is rural, mountainous or urban, metropolitan, we may see the small figure of the jumping spider.
Maybe you look at the picture and feel that it is not familiar, so let's recall:
When you are walking against the wall at home or outside, have you ever seen a small bug on the wall or tree, its color is similar to the color of the environment, the walking movements are very agile and agile, and occasionally jump forward for a distance? If you dangle your finger around it, it will also turn around very quickly to look up at your finger.
This little thing is a jumping bead, I believe everyone has an impression.
Hasarius adansoni
Unlike all other species of spiders, the thorax of the jumping spider can be freely twisted, and it can make movements such as tilting its head, turning its head, raising its head, and bowing its head.
And the front face of the jumping spider also has the iconic four large eyes (in fact, there are eight, the remaining four are on the side), with the jumping spider looking up and turning its head, it looks quite agile, giving people a very clever feeling.
In fact, jumping spiders are also very popular among spider lovers, often nicknamed "jumping".
Striped fly tiger Plexippus setipes
Jumping spiders are agile, curious, and can even interact with humans very interestingly, which is one of the reasons for their popularity.
Just a few days ago, I went out to run an errand, and when I was waiting for the green light, I found a small jump on the roadside fence, I stretched out my finger and shook it obliquely about 5 centimeters from it, it immediately jumped on my finger, and then jumped around in my hand to explore, so cute, I observed it for a long time before putting it back in place and continuing to cross the road.
Abe broad-breasted fly tiger Rhine albigera
As of February, more than 6,000 species have been identified and named, making it the most abundant family of spiders, accounting for about 13% of all spider species.
Jumping spiders also have a name called fly tiger in China, because they are natural enemies of flies and other insects, and the action of swooping during hunting is very similar to that of small tigers, so it is called fly tiger.
Everyone has seen spider webs, but there are many spiders that do not tie webs, jumping spiders are nomadic spiders, they will draw wire (act as safety ropes), but do not weave webs, but wander around actively to find prey.
Dark broad-breasted fly tiger Rhine atrata
Let's talk about the eyes of the jumping spider. They have eight eyes, four large eyes directly in front, four small eyes on the side and rear, fully able to see the six ways.
The eight eyes have different divisions of labor, and the two largest eyes in the middle are called the front middle eye, which is responsible for distinguishing and distinguishing colors, and can distinguish at least four different colors. The slightly smaller pair of eyes on either side of the anterior middle eye is called the anterior lateral eye, which has the most developed vision among the eight eyes, and can see the distance, shape and even details of the object in front of it, and form stereoscopic vision.
The first pair of eyes on the side is called the posterior middle eye, which is very small and can only feel light, but cannot be accurately imaged. The last pair of eyes, called the posterior side eyes, is responsible for capturing the dynamics of the environment on the side of the body and even behind them, so that they can react in time.
Menemerus brachygnathus
In fact, jumping spiders are not only cute in appearance, but also have superb hunting intelligence, and the decisions and behaviors they make when hunting far exceed the upper limit of their intelligence that their evolution should show, and the hunting behavior of jumping spiders has always been the subject of biologists' research.
In simple terms, jumping spiders have the ability to learn and remember, because they rely on hunting to hunt, rather than weaving a web to crouch prey, so this requires jumping spiders to be able to distinguish their own prey species, after experience, jumping spiders can make different strategies according to different types of prey to prey, and can also be adjusted at any time.
Ditch fly tiger Plexippus petersi
Relying on well-developed vision, the spider makes close observations after seeing its prey from a distance, including constantly adjusting the angle and distance at a distance, stalking between bunkers (if any), and sometimes even going around to a longer distance to observe the prey.
This allows for a more comprehensive assessment of the success rate of hunting, and on the other hand, if it is discovered by the prey, it can also let the prey relax its vigilance.
Even some species of jumping spiders will pretend to be prey, run to the web-shaped spider's web and shake their legs, attract the knotted spider to come to eat (in fact, to send death), and then the jumping spider will use its agility and flexibility to hunt the knotted spider.
Black fly tiger (brown striped spotted fly tiger) Plexippus paykulli