Short Horned Grasshopper (Orthoptera: Acrididae: Caelifera).

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The Order of insects, Orthoptera, include grasshoppers, locusts, crickets, and katydids.

The suborder Caelifera includes some 2,400 valid genera and about 11,000 species. Many undescribed species probably exist, especially in tropical wet forests. The Caelifera have a predominantly tropical distribution with fewer species known from temperate zones, but most of the superfamilies have representatives worldwide. They are almost exclusively herbivorous and are probably the oldest living group of chewing herbivorous insects.

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"Scientific Classification:
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Hexapoda
Class: Insecta
Order: Orthoptera
Suborder: Caelifera
Ander, 1939

Superfamilies:
Tridactyloidea
Tetrigoidea
Eumastacoidea
Pneumoroidea
Pyrgomorphoidea
Acridoidea
Tanaoceroidea
Trigonopterygoidea

Grasshoppers have the typical insect body plan of head, thorax and abdomen. The head is held vertically, at an angle to the body with the mouth at the bottom. It bears a large pair of compound eyes which give all-round vision, three simple eyes which can detect light and dark and a pair of thread-like antennae which are sensitive to touch and smell. The downward-directed mouthparts are modified for chewing and there are two sensory palps in front of the jaws.

The thorax and abdomen are segmented and have a rigid cuticle made up of overlapping plates composed of chitin. The three fused thoracic segments bear three pairs of legs and two pairs of wings. The forewings, known as tegmina, are narrow and leathery while the hind wings are large and membranous, the veins providing strength. The legs are terminated by claws for gripping. The hind leg is particularly powerful; the femur is robust and has several ridges where different surfaces join and the inner ridges bear stridulatory pegs in some species. The posterior edge of the tibia bears a double row of spines and there are a pair of articulated spurs near its lower end. The interior of the thorax houses the muscles that control the limbs.

Crickets, like this great green bush-cricket Tettigonia viridissima, somewhat resemble grasshoppers but have over 20 segments in their antennae and different ovipositors.

The abdomen has eleven segments, the first of which is fused to the thorax and contains the auditory organ and tympanum. Segments two to eight are ring-shaped and joined by flexible membranes. Segments nine to eleven are reduced; segment nine bears a pair of cerci and segments ten and eleven house the reproductive organs. Female grasshoppers are normally larger than males, with short ovipositors. The name "Caelifera" comes from the Latin and means chisel-bearing, referring to the sharp ovipositor.

Those species that make easily heard noises usually do so by rubbing a row of pegs on the hind femurs against the edges of the forewings (stridulation). These sounds are produced mainly by males to attract females, though in some species the females also stridulate." - Wikipedia

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