Supersonus

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Supersonus
Supersonus aequoreus male POne.0098708.g001 Fig A.png
Supersonus aequoreus male in Colombia
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Orthoptera
Suborder: Ensifera
Family: Tettigoniidae
Tribe: Phisidini
Genus: Supersonus
Sarria-S. et al, 2014
Species
High-speed video recording of Supersonus aequoreus during sound production.
Supersonus piercei female in Colombia Supersonus piercei female POne.0098708.g001 Fig D.png
Supersonus piercei female in Colombia
Supersonus sp. male in Ecuador Supersonus spp Ecuador.jpg
Supersonus sp. male in Ecuador

Supersonus is a genus of katydids in the order Orthoptera first described in 2014. The genus contains three species which are endemic to the rainforests of South America. Its name is an allusion to the fact that the males, in order to attract the females, produce a very high frequency noise which can reach 150 kHz (using only the right wing). This has been considered the highest frequency ultrasonic noise of the animal kingdom. The noise is imperceptible to human hearing, which is only capable of detecting up to 20 kHz.

Contents

Habitat

Supersonus species inhabit tropical to lowland rainforest environments at heights between 10–15 m (33–49 ft) above the forest floor, often a few meters below the forest canopy. They live on and among the epiphytal growth such as bromeliads and orchids on tree trunks and limbs. [1]

Populations of Supersonus aequoreus are known on the islands of Gorgona and Gorgonilla in the National Natural Park (PNN) Gorgona, which are isolated 35 km (22 mi) off the mainland Colombian coast. The rainforest of the islands is similar to that of the mainland, with an average annual temperature of 26 °C (79 °F) and rainfall averaging 6,891 mm (271.3 in). [1]

The Supersonus piercei population is known from Watershed Pericos around the small community of El Salto, in the Valle del Cauca Department of mainland Colombia. Like the rainforest of National Natural Park (PNN) Gorgona, the Watershed Pericos forest is a lowland tropical rainforest though is location on the western edges of the Andean Cordillera result in more rainfall and temperature fluctuation. Rainfall amounts in the watershed range between 4,000–10,000 mm (160–390 in) and the temperature range is between 18–25 °C (64–77 °F) annually. [1]

The population of Supersonus undulus inhabits a lowland rainforest environment at Tinalandia, in a private forest preserve between Quito and Santo Domingo de los Colorado in Pichincha Province. The elevation of the rainforest is 600 m (2,000 ft), the highest of the three population habitats, with a forest typical of the western Andean slopes. [1]

Taxonomy

Early specimens belonging to Supersonus were misidentified by researchers as specimens in the genus Arachnoscelis , with early specimen records dating back to 1927. Redescription of the Arachnoscelis type species by Montealegre-Z et al. (2013) [2] highlighted the notable differences between the type species and a number of specimens tentatively identified to that genus. [1]

The genus Supersonus was first described by Sarria-S et al (2014) based on specimens collected from locations in Colombia and Ecuador. Efforts to collect specimens were first collected during night expeditions in which researches manually searched the rainforest undergrowth wearing headlamps. However, over a span of almost 15 years, very few specimens were recovered. Discovery of the adults' preferred living height allowed the entomologists to collect a much larger sample group. [1]

Sarria-S et al (2014) chose the genus name Supersonus as a combination of the Latin words "super" meaning "above" and "sonus" meaning "sound". The name is recognition of the high forest perches used by calling males of the genus, along with the calls ranging above 100 kHz, and in honor of the original designation for ultrasonic frequencies as "supersonic". [1] Along with the genus description, three species were described in the 2014 type paper, Supersonus aequoreus , Supersonus piercei , and Supersonus undulus . [1] Initially the genus was placed into the Tettigoniidae subfamily Listroscelidinae and considered close in relationship to Arachnoscelis; however, further work led to a placement in the Meconematinae tribe Phisidini. [3]

Acoustics

At the time of description, the communication calls of male Supersonus species were identified as the highest frequency known from an arthropod, with calls reaching 115 kHz, 125 kHz, and 150 kHz in the three species. The typical frequency range for male katydid calls is between 5 kHz to 30 kHz, mostly within the human hearing range of 50 Hz to 20 kHz. The mating call of male S. aequoreus is the highest ultrasound calling carrier recorded in nature with a top frequency of 150 kHz. [1] The calls are generated by the modified right forewings which form a cavity over the insect dorsum producing sharp resonances and elevated sound pressure levels for the calling. [1]

Related Research Articles

Tettigoniidae Family of insects

Insects in the family Tettigoniidae are commonly called katydids, or bush crickets. They have previously been known as "long-horned grasshoppers". More than 6,400 species are known. Part of the suborder Ensifera, the Tettigoniidae are the only extant (living) family in the superfamily Tettigonioidea.

Ensifera Suborder of cricket-like animals

Ensifera is a suborder of insects that includes the various types of crickets and their allies including: true crickets, camel crickets, bush crickets or katydids, grigs, weta and Cooloola monsters. This and the suborder Caelifera make up the order Orthoptera. Ensifera is believed to be a more ancient group than Caelifera, with its origins in the Carboniferous period, the split having occurred at the end of the Permian period. Unlike the Caelifera, the Ensifera contain numerous members that are partially carnivorous, feeding on other insects, as well as plants.

The Nihoa conehead katydid is a species of katydid which is endemic to the Hawaiian island of Nihoa. It is one of the ten species in the genus Banza, all of them native to Hawaii, although it is the sister species to the remaining nine, and may belong in a separate genus. It gets its food mostly from plant leaves, but because of the low population, it does not do significant damage. Unlike Main Islands' species, whose males leap on the females before mating, the Nihoa variants sing to them. It is listed as a vulnerable species on the IUCN Red List, and as a "species of concern" under the Endangered Species Act.

<i>Megacrania batesii</i> Species of insect

Megacrania batesii, commonly known as the peppermint stick insect, is an unusual species of stick insect found in northeastern Australia, the Bismarck Archipelago, the Solomon Islands, New Guinea, and possibly as far north as the Philippines. It is notable for its aposematic coloration, as well as its robust chemical defense mechanism. Its common name refers to the irritating fluid — with an odor resembling peppermint — that it sprays as a defensive action from a pair of glands located at its prothorax when threatened, as well as the cylindrical, twig-like shape of its body. A member of the subfamily Megacraniinae, it was first described by English naturalist and explorer Henry Walter Bates in 1865.

Ultrasound avoidance is an escape or avoidance reflex displayed by certain animal species that are preyed upon by echolocating predators. Ultrasound avoidance is known for several groups of insects that have independently evolved mechanisms for ultrasonic hearing. Insects have evolved a variety of ultrasound-sensitive ears based upon a vibrating tympanic membrane tuned to sense the bat's echolocating calls. The ultrasonic hearing is coupled to a motor response that causes evasion of the bat during flight.

<i>Eupholidoptera chabrieri</i> Species of cricket-like animal

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<i>Onomarchus</i> (insect) Genus of cricket-like animals

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Mecopodinae Subfamily of cricket-like animals

Mecopodinae, the long-legged katydids, are a subfamily of bush crickets found in western South America, sub-Saharan Africa, and Asia. In Asia, the distribution includes India, Indochina, Japan, the Philippines, and Malesia to Papua New Guinea and Australasia, including many Pacific islands.

Copiphorini Tribe of insects

The Copiphorini are a tribe of bush crickets or katydids in the family Tettigoniidae. Previously considered a subfamily, they are now placed in the subfamily Conocephalinae. Like some other members of Conocephalinae, they are known as coneheads, grasshopper-like insects with an extended, cone-shaped projection on their heads that juts forward in front of the base of the antennae.

<i>Typophyllum</i> Genus of cricket-like animals

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Agraeciini Tribe of cricket-like animals

Agraeciini is a large tribe of bush crickets or katydids in the conehead subfamily, Conocephalinae.

<i>Conocephalus strictus</i> Species of cricket-like animal

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<i>Chlorobalius leucoviridis</i> Species of cricket-like animal

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<i>Caedicia simplex</i> Species of insect

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<i>Mantophryne insignis</i> Species of frog

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UPLB Museum of Natural History Natural history museum in University of the Philippines Los Baños

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<i>Erechthis levyi</i> Species of cricket-like animal

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References

  1. 1 2 3 4 5 6 7 8 9 10 Sarria-S, Fabio A.; Morris, Glenn K.; Windmill, James F. C.; Jackson, Joseph; Montealegre-Z, Fernando (2014-06-05). "Shrinking Wings for Ultrasonic Pitch Production: Hyperintense Ultra-Short-Wavelength Calls in a New Genus of Neotropical Katydids (Orthoptera: Tettigoniidae)". PLOS ONE. 9 (6): e98708. Bibcode:2014PLoSO...998708S. doi: 10.1371/journal.pone.0098708 . ISSN   1932-6203. PMC   4047022 . PMID   24901234.
  2. Montealegre-Z, F.; Cadena-Castañeda, O. J.; Chivers, B. (2013). "The Spider-Like Katydid Arachnoscelis (Orthoptera: Tettigoniidae: Listroscelidinae): Anatomical Study of the Genus". Zootaxa. 3666 (4): 591–600. doi:10.11646/zootaxa.3666.4.11. PMID   26217871.
  3. Tan, M. K.; Baroga-Barbecho, J.; Yap, S. (2020). "Taxonomy and bioacoustics of Meconematinae (Orthoptera: Tettigoniidae) from Laguna (Philippines: Luzon)". Zootaxa. 4732 (4): 527–544. doi:10.11646/zootaxa.4732.4.2. PMID   32230236. S2CID   214322682.