Grasshoppers have antennae that are almost always shorter than the body (sometimes filamentous), and short ovipositors. Those species that make easily heard noises usually do so by rubbing the hind femurs against the forewings or abdomen (stridulation), or by snapping the wings in flight. Tympana, if present, are on the sides of the first abdominal segment. The hind femora are typically long and strong, fitted for leaping. Generally they are winged, but hind wings are membranous while front wings (tegmina) are coriaceous and not fit for flight. Females are normally larger than males, with short ovipositors. Males have a single unpaired plate at the end of the abdomen. Females have two pairs of valves ( triangles) at the end of the abdomen used to dig in sand when egg laying.

Grasshoppers have antennae that are generally shorter than their body and short ovipositors. They also have pinchers or mandibles that cut and tear off food.Those species that make easily heard noises usually do so by rubbing the hind femurs against the forewings or abdomen (stridulation), or by snapping the wings in flight. Tympana, if present, are on the sides of the first abdominal segment. The hind femora are typically long and strong, fitted for leaping. Generally they are winged, but hind wings are membranous while front wings (tegmina) are coriaceous and not fit for flight. Females are normally larger than males, with short ovipositors. Males have a single unpaired plate at the end of the abdomen. Females have two pairs of valves ( triangles) at the end of the abdomen used to dig in sand when egg laying.

A grasshopper is another name for a locust. A grasshopper is an insect that eats plants and has long back legs adapted for leaping.A Grasshopper sings to other grasshoppers by rubbing the hard veins on its front wings over the tiny teeth inside its back legs.

A. How to identify genuine leather

Hand touching: touch leather surface, if smooth, soft, plump, flexible feel is the dermis; and general artificial surface made of synthetic leather acerbity, rigid, and poor soft .

Seeing: real leather surface will have a clearer pores, pattern, yellow calf skin have a more symmetrical fine pores, yak skin has coarse pores and sparse, mountain sheep have fish scale pores.

Smelling: those who have the leather smell of real leather; and artificial leather has a strong irritating smell of plastic.

Burning: Tear a litter fiber from the back of real leather and artificial leather, burning, the one issued by a pungent odor, formed a lump is artificial leather; any given hair smell, not a hard nut to crack is the real leather.

B．identifying artificial leather and synthetic leather

With the above four basic identification methods, in order to compare the identification of artificial leather, synthetic leather on the obvious. In addition, artificial leather and synthetic leather has the following characteristics:

B1. press the leather surface with your fingers, there is no obvious pores wrinkles, such as the press after the wrinkles, nor will obviously disappear naturally.

B2. leather surface without pores, which is an important feature of identification of genuine and fake leather.

B3. cut corner burning, flavored, but not hair, the smell of coke.

C. how to distinguish cow leather, pig leather, horse leather and sheep leather

Leather types, their characteristics and uses are different. For example, small cow leather surface, high strength, the most suitable for making shoes; sheep leather light, thin and soft, is ideal for leather clothing fabric; pig leather ventilated gas permeable better performance.

Pig leather: leather surface of the pores round and thick, stretching from leather in a more sloping. The arrangement of pores for a group of three, leather surface showing the pattern of many small triangles

Bovine leather: cattle leather and buffalo leather are called cow leather, but both also have some differences. Cattle leather rounded surface of the pores than straight to stretching leather, the pores close and uniform, irregular, like starry. Buffalo leather surface of the pores than that in cattle leather thick, pore length is longer than cattle leather scarce, coriaceous more relaxed, less than yellow water plump leather's regularly lines.

Horse Leather: leather surface of the hair are oval-shaped, slightly larger than that in cattle leather pores arranged in a more regulatory laws.

Sheep leather: leather grain oblate pores, pores clear, form in a group, arranged in fish scale.