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Schistocerca Piceifrons
''Schistocerca piceifrons'' is a large locust in the subfamily Cyrtacanthacridinae: Acrididae. There are two subspecies. ''S. p. piceifrons'' is sometimes called the Central American Locust and ''S. p. peruviana'' is sometimes known as the Peruvian Locust. Taxonomy and Distribution ''S. piceifrons'' is closely related to ''Schistocerca americana'', but exhibits a greater degree of phase polymorphism referred to in the technical literature as "density-dependent phenotypic plasticity. It is the swarming locust Locusts (derived from the Vulgar Latin ''locusta'', meaning grasshopper) are various species of short-horned grasshoppers in the family Acrididae that have a swarming phase. These insects are usually solitary, but under certain circumstanc ... of tropical America. Subspecies Two subspecies of ''S. piceifrons'' are recognised: * ''S. p. piceifrons'', which occurs in the dry areas of the Pacific coast of Central America and the Yucatan Peninsula of Mexico; * ''S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Locust
Locusts (derived from the Vulgar Latin ''locusta'', meaning grasshopper) are various species of short-horned grasshoppers in the family Acrididae that have a swarming phase. These insects are usually solitary, but under certain circumstances they become more abundant and change their behaviour and habits, becoming gregarious. No taxonomic distinction is made between locust and grasshopper species; the basis for the definition is whether a species forms swarms under intermittently suitable conditions; this has evolved independently in multiple lineages, comprising at least 18 genera in 5 different acridid subfamilies. Normally, these grasshoppers are innocuous, their numbers are low, and they do not pose a major economic threat to agriculture. However, under suitable conditions of drought followed by rapid vegetation growth, serotonin in their brains triggers dramatic changes: they start to breed abundantly, becoming gregarious and nomadic (loosely described as migratory) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyrtacanthacridinae
The Cyrtacanthacridinae are a subfamily of Orthoptera: Caelifera in the family Acrididae. They are sometimes referred-to as bird locusts, ''criquets voyageurs'' in French-speaking Africa, and ''Knarrschrecken'' in German. It includes species of locusts, short-horned grasshoppers that undergo phase polymorphism and are among the most important pests of sub-Saharan Africa; they include the desert locust and the red locust, with the related Bombay locust in Asia. One of the characteristics of members of this subfamily is the prominent peg between the forelegs: hence the name for the Australian Spur-throated locust. Genera The following genera have been included with a single tribe separated: Cyrtacanthacridini Auth. Kirby, 1910; worldwide distribution (mostly tropical and sub-tropical) # '' Anacridium'' Uvarov, 1923 # '' Chondracris'' Uvarov, 1923 # '' Cyrtacanthacris'' Walker, 1870 # '' Nomadacris'' Uvarov, 1923 - monotypic ''N. septemfaciata'' # '' Ornithacris'' Uva ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acrididae
The AcrididaeMacLeay WS (1821) ''Horae Entomologicae or Essays on the Annulose Animals'' 2 are the predominant family of grasshoppers, comprising some 10,000 of the 11,000 species of the entire suborder Caelifera. The Acrididae are best known because all locusts (swarming grasshoppers) are of the Acrididae. The subfamily Oedipodinae is sometimes classified as a distinct family Oedipodidae in the superfamily Acridoidea. Acrididae grasshoppers are characterized by relatively short and stout antennae, and tympana on the side of the first abdominal segment. Subfamilies The ''Orthoptera Species File'' (September 2021) lists the following subfamilies of Acrididae. The numbers of genera and species are approximate and may change over time. # Acridinae MacLeay, 1821 (140 genera, 470 species), Worldwide: temperate and tropical # Calliptaminae Jacobson, 1905 (12 genera, 90 species), Africa, Europe, Asia # Caryandinae Yin & Liu, 1987 (3 genera, 100 species), Africa, Asia ## ''C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Schistocerca Americana
''Schistocerca americana'' is a species of grasshopper in the family Acrididae known commonly as the American grasshopperSquitier, J. M. and J. L. Capinera''Schistocerca americana'' (Drury).Entomology and Nematology. University of Florida IFAS. and American bird grasshopper.Alborn, H. T., et al. (2007)Disulfooxy fatty acids from the American bird grasshopper ''Schistocerca americana'', elicitors of plant volatiles.''Proceedings of the National Academy of Sciences'' 104(32) 12976-81. It is native to North America, where it occurs in the eastern United States, Mexico, and the Bahamas. Occasional, localized outbreaks of this grasshopper occur, and it is often referred to as a locust,Greenlee, K. J. and J. F. Harrison. (2004)Development of respiratory function in the American locust ''Schistocerca americana'' I. Across-instar effects.''Journal of Experimental Biology'' 207(3) 497-508. though it lacks the true swarming form of its congener, the desert locust (''S. gregaria'').Thomas, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phenotypic Plasticity
Phenotypic plasticity refers to some of the changes in an organism's behavior, morphology and physiology in response to a unique environment. Fundamental to the way in which organisms cope with environmental variation, phenotypic plasticity encompasses all types of environmentally induced changes (e.g. morphological, physiological, behavioural, phenological) that may or may not be permanent throughout an individual's lifespan. The term was originally used to describe developmental effects on morphological characters, but is now more broadly used to describe all phenotypic responses to environmental change, such as acclimation (acclimatization), as well as learning. The special case when differences in environment induce discrete phenotypes is termed polyphenism. Generally, phenotypic plasticity is more important for immobile organisms (e.g. plants) than mobile organisms (e.g. most animals), as mobile organisms can often move away from unfavourable environments. Nevertheless, mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Insects Described In 1870
Insects (from Latin ') are pancrustacean hexapod invertebrates of the class Insecta. They are the largest group within the arthropod phylum. Insects have a chitinous exoskeleton, a three-part body ( head, thorax and abdomen), three pairs of jointed legs, compound eyes and one pair of antennae. Their blood is not totally contained in vessels; some circulates in an open cavity known as the haemocoel. Insects are the most diverse group of animals; they include more than a million described species and represent more than half of all known living organisms. The total number of extant species is estimated at between six and ten million; In: potentially over 90% of the animal life forms on Earth are insects. Insects may be found in nearly all environments, although only a small number of species reside in the oceans, which are dominated by another arthropod group, crustaceans, which recent research has indicated insects are nested within. Nearly all insects hatch from eggs. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
