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Although "grasshopper" has been used as a common name for the suborder in general, [3] [4] [5] modern sources restrict it to the more "evolved" families. [6] They may be placed in the infraorder Acrididea [ 7 ] and have been referred to as "short-horned grasshoppers" in older texts [ 8 ] to distinguish them from the also-obsolete term "long ...
Chewing insects have two mandibles, one on each side of the head. The mandibles are positioned between the labrum and maxillae . The mandibles cut and crush food, and may be used for defense; generally, they have an apical cutting edge, and the more basal molar area grinds the food.
The subphylum Hexapoda (from Greek for 'six legs') or hexapods comprises the largest clade of arthropods and includes most of the extant arthropod species. It includes the crown group class Insecta (true insects), as well as the much smaller clade Entognatha, which includes three classes of wingless arthropods that were once considered insects: Collembola (springtails), Protura (coneheads) and ...
Acrididae grasshoppers are characterized by relatively short and stout antennae (so they may be called "short-horned grasshoppers" [3]), and tympana on the side of the first abdominal segment. Subfamilies
In Judaism, the Orthoptera include the only insects considered kosher. The list of dietary laws in the book of Leviticus forbids all flying insects that walk, but makes an exception for certain locusts. [16] The Torah states the only kosher flying insects with four walking legs have knees that extend above their feet so that they hop. [17]
The third instar is up to 2 cm long and the wing pads are triangular. The fourth instar has venation in its wing pads. The fifth instar is up to 3.5 cm long and the wing pads have changed position. By the sixth instar, the wings have elongated. [3] This species overwinters as an adult rather than in the egg, as many other grasshoppers do. [3]
Grasshoppers in general, including this species, are herbivorous and subsist mainly on grasses. [6] Scientists have gained knowledge of the diet of G. rufus through the use of feces as a source of DNA. It has been documented to eat plants of the genus Bromus, the species Holcus lanatus, and the subfamily Pooideae, all within the family Poaceae. [6]
However Acridinae differ from Gomphocerinae in that they lack stridulatory pegs on their hind legs and thus, as the common name suggests, do not make sounds. The antennae of this species is flattened and sword-like, a trait also shared with some gomphocerines and also with the spurthroated grasshoppers (subfamily Cyrtacanthacridinae ).