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Termites are eusocial insects which are classified in the taxonomic rank of infraorder Isoptera, or as epifamily Termitoidae within the cockroach order Blattodea. Termites were once classified in another sequence from cockroaches, but recent phylogenetic studies indicate that they evolved from close ancestors of cockroaches during the Jurassic or Triassic.
About 3,106 species are currently clarified, with a few hundred more left to be described. Although these insects are often called"white ants", they're not ants. .
Like ants and some bees and wasps from the distinct order Hymenoptera, termites split labour among castes consisting of sterile male and female"workers" and"soldiers". All colonies have fertile males called"kings" and one or more fertile females called"queens". Termites chiefly feed on dead plant material and cellulose, generally in the form of wood, leaf litter, dirt, or animal dung.
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Termites are among the most successful groups of insects on Earth, colonising many landmasses except Antarctica. Their colonies range in size from a couple hundred individuals to enormous societies with many million individuals. Termite queens have the longest lifespan of any insect in the world, with some queens allegedly living up to 30 to 50 decades.
Colonies are described as superorganisms since the termites form a part of a self-regulating entity: the colony itself. .
Termites are a delicacy in the diet of some human cultures and are employed in many traditional medicines. Several hundred species are economically significant as pests which can cause considerable damage to buildings, crops, or plantation forests. Some species, such as the West Indian drywood termite (Cryptotermes brevis), are regarded as invasive species. .
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The infraorder name Isoptera comes from the Greek words iso (equal) and ptera (winged), which describes the nearly equal size of the fore and hind wings.2"Termite" derives from the Latin and Late Latin term termes ("woodworm, white ant"), altered from the influence of Latin terere ("to rub, wear, erode") by the prior word tarmes.
The external appearance of this giant northern termite Mastotermes darwiniensis is indicative of the intimate relationship between termites and cockroaches.
Termites were formerly put in the order Isoptera. As early as 1934 suggestions were made that they were closely linked to wood-eating cockroaches (genus Cryptocercus, the woodroach) based on the similarity of the symbiotic gut flagellates.6 In the 1960s additional evidence supporting that theory emerged when F. A. click here for more McKittrick noted similar morphological traits between some termites and Cryptocercus nymphs.7 In 2008 DNA analysis from 16S rRNA sequences8 supported the position of termites being nested within the evolutionary tree containing the sequence Blattodea, which included the cockroaches.910 The cockroach genus Cryptocercus stocks the strongest phylogenetical similarity with termites and is considered to be a sister-group to termites.1112 Termites and Cryptocercus share similar morphological and social features: for example, most cockroaches do not display social attributes, but Cryptocercus takes good care of its own young and exhibits other societal behavior like trophallaxis and allogrooming.13 Termites are thought to be the descendants of the genus Cryptocercus.914 Some researchers have suggested a more conservative measure of retaining the termites as the Termitoidae, an epifamily within the cockroach order, which averts the classification of termites in family level and below.15 Termites have long been accepted to be closely associated with cockroaches and mantids, and they are classified in the same superorder (Dictyoptera).1617.
The oldest unambiguous termite fossils date to the early Cretaceous, but given the diversity of Cretaceous termites and ancient fossil records showing mutualism between microorganisms and such insects, they likely originated earlier in the Jurassic or Triassic.181920 Further evidence of a Jurassic origin is the assumption that the extinct Fruitafossor consumed termites, judging from its morphological similarity to modern termite-eating mammals.21 The oldest termite nest detected is thought to be from the Upper informative post Cretaceous in West Texas, where the earliest known faecal pellets have been discovered.22 Claims that footprints arose earlier have confronted controversy.
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Weesner indicated the Mastotermitidae termites may go back to the late Permian, 251 million years ago,23 and fossil wings that have a close resemblance to the wings of Mastotermes of their Mastotermitidae, the most primitive living termite, have been found in the Permian layers in Kansas.24 It is even possible that the very first termites emerged during the Carboniferous.25 The folded wings of this fossil wood roach Pycnoblattina, arranged in a convex pattern between segments 1a and 2a, resemble those seen in Mastotermes, the only living insect with the identical pattern.24 Krishna et al., however, consider that all of the Paleozoic and Triassic insects tentatively categorized as termites are in fact unrelated to termites and should be excluded from the Isoptera.26 The primitive giant northern termite (Mastotermes darwiniensis) exhibits numerous cockroach-like attributes that are not shared with other termites, such as laying its eggs in rafts and having anal lobes on the wings.27 Cryptocercidae and Isoptera are united in the clade Xylophagidae.28 Termites are sometimes known as"white ants" but the only resemblance to the ants is because of their sociality which is because of convergent evolution2930 with termites being the very first social insects to evolve a caste system more than 100 million years back.31 Termite genomes are generally relatively large compared to that of other insects; the first completely sequenced termite genome, of Zootermopsis nevadensis, that was printed in the journal Nature Communications, consists of roughly 500Mb,32 while two subsequently released genomes, check here Macrotermes natalensis and Cryptotermes secundus, are considerably larger at around 1.3Gb.3330.