Melanoplus bivittatus | |
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Female M. bivittatus | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Arthropoda |
Class: | Insecta |
Order: | Orthoptera |
Suborder: | Caelifera |
Family: | Acrididae |
Genus: | Melanoplus |
Species: | M. bivittatus |
Binomial name | |
Melanoplus bivittatus (Say, 1825) | |
Subspecies | |
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Melanoplus bivittatus, the two-striped grasshopper, is a poikilothermic [1] species of grasshopper belonging to the genus Melanoplus . It is commonly found in North America, [2] with high quantities inhabiting Canadian prairies and farmland. [3]
A relatively large species with sizes ranging from 30 to 55 mm. [4] A pair of pale yellow stripes running along the top of its body from above its eyes to the hind tip of its wings help to easily identify this species. This characteristic also gives this species its other common name the yellow-striped grasshopper. [4] The species also has a yellowish green coloration throughout its body due to chromoprotein and carotenoid. [5] The rest of the body looks similar to that of most grasshopper species, with enlarged hind legs for jumping and two pairs of wings, with one set overlapping the other.
During the winter, eggs are laid in the soil and hatch by late April to early May. [3] At optimal conditions (25 °C, very moist), Melanoplus bivittatus will stop morphogenesis at around 21 days. [6] Once morphogenesis is stopped, the eggs go into a state of diapause, with development continuing again in spring. [6] Once temperatures are warm enough the eggs start hatching. Once hatching starts, the maximum rate of hatching occurs between the 10th and 13th day. [6] At the end of development, a Melanoplus bivittatus individual will have gone through five instars. [3]
Melanoplus bivittatus participate in long hours of mating, with some copulation lasting up to 10 hours. [7] The mating rituals of M.bivittatus are similar to that of red-legged grasshoppers ( Melanoplus femurrubrum ) in that both species receive and obtain nuptial gifts, in this case spermatophores [7] Spermatophores are provided during the entire copulation period, which tends to be dominated mostly by male activity. [7] Not only does long periods of copulation increase the likelihood of transferring genes, but time spent in copola can be very productive for sperm and nutrient transfer. [7] Once the females have mated with a male they can delay mating for up to 21 days. [7] Females will often refrain from rejecting males due to the benefits gained from the protein and fitness from eating the spermatophore. [7]
Melanoplus bivittatus are polyphagous, which means they are capable of eating a wide variety of food. [2] The main source of food they rely on are plants such as forbs and lentil crops. [2] This species is commonly seen eating many different types of crops on farms across North America. [2] In times of food shortage, this species has been known to cannibalize one another. [8] During times of colder weather (below 25 °C) Melanoplus bivittatus will not feed since fecal production is low and excrete can not be expelled. [2] This species of Orthoptera require a diet with linoleic acid or unsaturated fatty acids, since these acids keep the organism's wings from crumpling. [5]
Orthoptera are known pests to agricultural environments. Some species can completely ruin crops and have detrimental economic effects on farmers. [3] Melanoplus bivittatus can cause crop damage all through their life cycle. [3] Not only do M. bivittatus damage crops, but they tend to eat the reproductive parts of the plants (sepals, flowers, immature and mature pods), so the likelihood of regeneration or reproduction is slim. [3]
Insects in the family Tettigoniidae are commonly called katydids or bush crickets. They have previously been known as "long-horned grasshoppers". More than 8,000 species are known. Part of the suborder Ensifera, the Tettigoniidae are the only extant (living) family in the superfamily Tettigonioidea.
Orthoptera is an order of insects that comprises the grasshoppers, locusts, and crickets, including closely related insects, such as the bush crickets or katydids and wētā. The order is subdivided into two suborders: Caelifera – grasshoppers, locusts, and close relatives; and Ensifera – crickets and close relatives.
The Rocky Mountain locust is an extinct species of grasshopper that ranged through the western half of the United States and some western portions of Canada with large numbers seen until the end of the 19th century. Sightings often placed their swarms in numbers far larger than any other locust species, with one famous sighting in 1875 estimated at 198,000 square miles (510,000 km2) in size, weighing 27.5 million tons and consisting of some 12.5 trillion insects, the greatest concentration of animals ever speculatively guessed, according to Guinness World Records.
Grasshoppers are a group of insects belonging to the suborder Caelifera. They are amongst what are possibly the most ancient living groups of chewing herbivorous insects, dating back to the early Triassic around 250 million years ago.
The Indianmeal moth, also spelled Indian meal moth and Indian-meal moth, is a pyraloid moth of the family Pyralidae. Alternative common names are hanger-downers, weevil moth, pantry moth, flour moth or grain moth. The almond moth and the raisin moth are commonly confused with the Indian-meal moth due to similar food sources and appearance. The species was named for feeding on Indian meal or cornmeal, and does not occur natively in India. It is also not to be confused with the Mediterranean flour moth, another common pest of stored grains.
The Bibron's toadlet or brown toadlet is a species of Australian ground-dwelling frog that, although having declined over much of its range, is widespread through most of New South Wales, Victoria, south-eastern Queensland, and eastern South Australia, including Kangaroo Island. Bibron's toadlet settles in a wide variety of habitats within these region but they mainly reside in dry forests, woodland, shrubland, grassland, coastal swamps, heathland, and sub-alpine areas. They deposit their eggs in leaf litters during the flooding season, which is essential for the proper development of the egg. This species has high sexual dimorphism within the species and utilizes chemosignals to attract potential mates.
Melanoplus is a large genus of grasshoppers. They are the typical large grasshoppers in North America. A common name is spur-throat grasshoppers, but this more typically refers to members of the related subfamily Catantopinae.
The European corn borer, also known as the European corn worm or European high-flyer, is a moth of the family Crambidae. It is a pest of grain, particularly maize. The insect is native to Europe, originally infesting varieties of millet, including broom corn. The European corn borer was first reported in North America in 1917 in Massachusetts, but was probably introduced from Europe several years earlier. Since its initial discovery in the Americas, the insect has spread into Canada and westwards across the United States to the Rocky Mountains.
Chorthippus brunneus, also known as the common field grasshopper, is a species of grasshopper of the subfamily Gomphocerinae. The species is common and widespread in the Western Palearctic, and the IUCN lists it as Least Concern.
The differential grasshopper is a species of grasshopper belonging to the genus Melanoplus. It is found throughout northern Mexico, the central United States and southern Ontario, Canada. It is considered a pest over most of its range.
A mating plug, also known as a copulation plug, sperm plug, vaginal plug, or sphragis, is a gelatinous secretion used in the mating of some species. It is deposited by a male into a female genital tract, such as the vagina, and later hardens into a plug or glues the tract together. While females can expel the plugs afterwards, the male's sperm still gets a time advantage in getting to the egg, which is often the deciding factor in fertilization.
Edith's checkerspot is a species of butterfly in the family Nymphalidae. It is a resident species of western North America and among the subspecies, entomologists have long been intrigued by their many phenotypic variations in coloration, wing length, and overall body size. Most populations are monophagous and rely on plants including Plantago erecta and Orthocarpus densiflorus as their host species in developing from eggs through to larvae, pupae, and mature butterflies. Males exhibit polygyny whereas females rarely mate more than once. Males devote most of their attention to mate acquisition, and such mate locating strategies such as hilltopping behavior have developed. Climate change and habitat destruction have impacted certain subspecies. Three subspecies in particular, Euphydryas editha quino, Euphydryas editha bayensis and Euphydryas editha taylori, are currently under protection via the Endangered Species Act.
The Senegalese grasshopper is a medium-sized grasshopper species found in the Sahel region of Africa, the Canary Islands, Cape Verde Islands, and West Asia. Although not called a locust in English, this species shows gregarious behaviour and some morphological change on crowding. In many parts of the Sahel, this species may cause greater year-on-year crop damage than better-known locusts, attacking crops such as the pearl millet.
Melanoplus femurrubrum, the red-legged grasshopper, is a species of grasshopper belonging to the genus Melanoplus. It is one of the most common grasshoppers found in Mexico, the United States, and Canada. This grasshopper is frequently used as a model organism in scientific studies, due to their abundance throughout North America and behavioral response to changes in climate.
Taeniopoda eques, the western horse lubber grasshopper, is a relatively large grasshopper species of the family Romaleidae found in arid and semi-arid parts of southwestern United States to central and southwestern Mexico. Most populations are identifiable by their shiny black bodies with contrasting yellow markings, but some adults are mostly yellowish, orangish or greenish. The species is unique in using its black coloration to thermoregulate and in being chemically defended. The aposematic coloration warns vertebrate predators of its unpalatability and allows the grasshopper to roost conspicuously upon shrubs.
The rufous grasshopper is a species of grasshopper. It is a medium-sized, broad, brown, short-horned grasshopper with clubbed antennae that are tipped with a conspicuous white or pale colour. It is fairly large, averaging 14 to 22 mm in length. It is of the subfamily Gomphocerinae in the family Acrididae, the predominant family of grasshoppers. This species is present in most of Europe, in the eastern Palearctic realm, and in the Near East. It can be encountered from late July through mid-December, usually in dry or slightly moist habitats. The environments in which it typically resides include dry grassland on calcareous soils, sheltered valleys with scrub, and the open borders of forests. It feeds on grasses and various herbaceous plants. It is known for its distinctive courtship song and accompanying display.
Schistocerca americana is a species of grasshopper in the family Acrididae known commonly as the American grasshopper and American bird grasshopper. 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, though it lacks the true swarming form of its congener, the desert locust.
Epicauta vittata is a species of beetle in the family Meloidae, the blister beetles. It is native to eastern North America, including eastern Canada and the eastern United States. It is known commonly as the striped blister beetle and the old-fashioned potato beetle. It is known as an agricultural pest.
Colaphellus bowringi is a species of leaf beetle. It was first characterized by English entomologist Joseph Sugar Baly in 1865 and is primarily found in southeastern China, as well as other areas of Asia.
Carabus japonicus is a ground beetle endemic to Japan. It inhabits the southwestern Japanese forests and is most frequently observed between May and September, with peak observations occurring mid-August. C. japonicus is a univoltine species, meaning it has one brood of offspring per year. Its larvae prey exclusively on earthworms. At lower altitudes, the reproductive cycle has been shown to coincide with the abundance of earthworms. This demonstrates the synchronization between the life cycles of the two species. The males tend to be slightly smaller than the females with both sexes having median body sizes of 24 mm and 26 mm, respectively. However, there is a large variation in intraspecific body size due to factors other than sex. These factors include parent size, food availability, and habitat temperature.
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