Heterotermes

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Heterotermes
Heterotermes aureus (Arizona, USA).jpg
A colony of H. aureus found after lifting a rock
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Blattodea
Infraorder: Isoptera
Family: Rhinotermitidae
Genus: Heterotermes
Froggatt, 1896

Heterotermes is a genus of subterranean termites belonging to the family Rhinotermitidae. [1] The genus has an almost cosmopolitan distribution. [1] One of their closest relatives is the Reticulitermes genus.

Contents

General overview

Heterotermes are considered pests because they form large colonies and can cause severe property damage. [2] They feed themselves by gathering cellulose from natural sources including dead tree logs, stumps, and branches as well as from man-made wooden structures such as buildings, books and paper.

Heterotermes are considered to be highly adaptable, having a relatively fast growth rate in mature colonies with good conditions. They are found in dry and humid wooded areas, such as the West Indies and the Bahamas, [2] except for Heterotermes aureus, which has been found in Northwestern Mexico and the Southwestern United States. [2] Heterotermes show relatively fast neotenic formation within the colony and are only observed to have the nymphoid neotenic caste as a secondary reproductive.[ citation needed ]

They are similar in appearance to Reticulitermes , but Heterotermes soldiers are smaller and exhibit a mandible with a curved tip and a base area that is straighter than that of Reticulitermes. [2]

Castes

Primary reproductives

The alates of many Heterotermes and Reticulitermes are very similar in morphology. However, many Heterotermes gynes are more lightly pigmented (color range is usually pale yellow-brown to orange-brown) than Reticulitermes. They are between 7 and 11 millimeters in length. A colony usually only consists of one pair of primary reproductives, but they are occasionally found to have more than one reproductive pair.[ citation needed ]

Heterotermes alates with eggs. By Dulneth Wijewardana Heterotermes alates.jpg
Heterotermes alates with eggs. By Dulneth Wijewardana

Secondary reproductives

The only type of secondary reproductive found in Heterotermes are nymphoid neotenic individuals. They usually arise in case of colony isolation or the death of primary reproductives. They start to develop from nymphs around their third instar. Older nymphs of this caste are also found to molt back into a nymphoid neotenic in case they are needed. A colony can have multiple nymphoid neotenic pairs that become physogastric within the first few weeks to produce eggs. Similar to workers, they lack visible eyes and are usually lightly pigmented which gives them a light orange tint.[ citation needed ]

Nymphoid neotenic females of Heterotermes, By Dulneth Wijewardana Nymphoid neotenic.jpg
Nymphoid neotenic females of Heterotermes, By Dulneth Wijewardana
Nymphoid neotenic pairs among colony with eggs and workers, By Dulneth Wijewardana Nymphoid neotenic pairs.jpg
Nymphoid neotenic pairs among colony with eggs and workers, By Dulneth Wijewardana

Workers and soldiers

Workers make up the majority of a colony alongside soldiers. Workers perform tasks such as gathering food, expanding the nest, and caring for reproductives and their brood, while soldiers perform the task of defending the nest against intruders. Soldiers will excrete a light grey-tinted sticky liquid when disturbed, and are also found to bump their heads into nest walls to alert fellow colony members about arriving danger.[ citation needed ]

Workers and Soldiers found within a heterotermes colony, By Dulneth Wijewardana Workers & Soldiers.jpg
Workers and Soldiers found within a heterotermes colony, By Dulneth Wijewardana

Species

Related Research Articles

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<i>Reticulitermes</i> Genus of termites

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<i>Incisitermes minor</i> Species of termite

Incisitermes minor is a species of termite in the family Kalotermitidae known commonly as the western drywood termite. It is native to western North America, including the western United States and northern Mexico. It has been found in many other parts of the United States, all the way to the East Coast. It has been reported from Toronto. It has been introduced to Hawaii. It has been noted in China and it is not uncommon in Japan. This is an economically important pest of wooden structures, including houses. In California and Arizona alone its economic impact is estimated to be about $250 million per year.

Coptotermes frenchi, the Australian subterranean termite, is a species of termite in the family Rhinotermitidae. Termites are social insects and C. frenchi usually builds its communal nest in the root crown of a tree. From this, a network of galleries extends through the nearby soil, enabling the workers to forage in the surrounding area without emerging on the surface of the ground.

<i>Coptotermes acinaciformis</i> Species of termite

Coptotermes acinaciformis is a species of subterranean termite in the family Rhinotermitidae native to Australia. Termites are social insects and build a communal nest. In the case of C. acinaciformis, this is either in the root crown of a tree or underground. From this, a network of galleries extends through the nearby soil, enabling the workers to forage in the surrounding area without emerging on the surface of the ground. This termite can cause substantial damage to trees and the wooden parts of buildings.

<i>Cryptotermes brevis</i> Species of termite

Cryptotermes brevis is a species of termite in the family Kalotermitidae, commonly known as the West Indian drywood termite or the powderpost termite. It is able to live completely inside timber structures or articles made of wood such as furniture without any outside source of water. It is frequently introduced into new locations inadvertently, and causes damage to the structural timbers of buildings and to wooden objects such as furniture.

The Indo-Malaysian drywood termite,, is a species of dry wood termite of the genus Cryptotermes. It is found in Philippines, Australia, Papua New Guinea, Hawaii, and introduced to Sri Lanka. It is the smallest termite species in Australia, with 2.5 – 3.7mm in soldiers.

<i>Reticulitermes hesperus</i> Species of termite

Reticulitermes hesperus, the western subterranean termite, is a species of termite in the family Rhinotermitidae. It is found in Central America and North America. R. hesperus is native to the coast between British Columbia and Southern California. Like other subterranean termites, they live underground, where they have elaborate eusocial societies composed of a queen, workers, and soldiers, as well as a rotating case of sexually reproductive adults and their larval and immature offspring. The reproductive adults are the only ones with functional wings. The reproductive adults will swarm on warm days in spring and fall, particularly after a rain event, looking for mating partners. These termites prefer moist living environments and prefer to consume wood that has already been partially decayed by saprotrophic fungus.

Marginitermes hubbardi, commonly known as the light western drywood termite, is a species of termite in the family Kalotermitidae. It is found in Central America and desert regions of southwestern North America.

Prorhinotermes simplex, the Cuban subterranean termite, is a species of lower termite in the genus Prorhinotermes. It is found in Colombia. Like others in its genus, it is a single-site nesting termite that moves to a new food source when theirs is gone, and it lacks a true worker caste.

<i>Reticulitermes speratus</i> Species of termite

Reticulitermes speratus, the Japanese termite, is a species of subterranean termite found in Japan, North Korea, and South Korea. It eats decayed wood. It is adapted to withstand the cold temperatures of the temperate regions it inhabits.

<i>Reticulitermes virginicus</i> Species of termite

Reticulitermes virginicus is a species of subterranean termite native to North America, found often in the southern United States. It was described in 1907.

Amitermes floridensis, commonly known as the Florida darkwinged subterranean termite, is a species of eusocial insect in the family Termitidae. It feeds on rotting wood, reached by a network of tunnels. It is endemic to west central Florida and was first described in 1989.

<i>Reticulitermes tibialis</i> Species of termite

Reticulitermes tibialis, the arid-land subterranean termite, is a species of termite in the family Rhinotermitidae. It is found in the United States, mostly in the western half, occurring in deserts, prairies and other dry locations.

<i>Heterotermes aureus</i> Species of termite

Heterotermes aureus, commonly known as the desert subterranean termite, is a species of termite in the family Rhinotermitidae. It is native to the deserts of North America where the colony has an underground nest.

References

  1. 1 2 "Heterotermes Froggatt, 1896". www.gbif.org. Retrieved 19 June 2021.
  2. 1 2 3 4 "West Indian Subterranean Termite". entnemdept.ufl.edu. Retrieved 2024-06-04.