Nasutitermitinae | |
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Natusitermes coniger | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Arthropoda |
Class: | Insecta |
Order: | Blattodea |
Infraorder: | Isoptera |
Family: | Termitidae |
Subfamily: | Nasutitermitinae Hare [1] |
Genera | |
see text |
The Nasutitermitinae is a cosmopolitan subfamily of higher termites that includes more than 80 genera. [2] They are most recognisable by the more highly derived soldier caste which exhibits vestigial mandibles and a protruding fontanellar process on the head from which they can "shoot" chemical weaponry. True workers of certain genera within this subfamily also exhibit a visible epicranial y suture, most notably found within the members of Nasutitermes. Notable genera include the notorious wood-eating Nasutitermes, and the conspicuous Hospitalitermes and Constrictotermes, both genera characterized by their behavior of forming large open-air foraging trails.
The Termite Catalogue [3] lists the following:
Termites are a group of detritophagous eusocial insects which consume a wide variety of decaying plant material, generally in the form of wood, leaf litter, and soil humus. They are distinguished by their moniliform antennae and the soft-bodied and typically unpigmented worker caste for which they have been commonly termed "white ants"; however, they are not ants, to which they are distantly related. About 2,972 extant species are currently described, 2,105 of which are members of the family Termitidae.
Blattodea is an order of insects that contains cockroaches and termites. Formerly, termites were considered a separate order, Isoptera, but genetic and molecular evidence suggests they evolved from within the cockroach lineage, cladistically making them cockroaches as well. The Blattodea and the mantis are now all considered part of the superorder Dictyoptera. Blattodea includes approximately 4,400 species of cockroach in almost 500 genera, and about 3,000 species of termite in around 300 genera.
In zoology, an inquiline is an animal that lives commensally in the nest, burrow, or dwelling place of an animal of another species. For example, some organisms such as insects may live in the homes of gophers or the garages of humans and feed on debris, fungi, roots, etc. The most widely distributed types of inquiline are those found in association with the nests of social insects, especially ants and termites – a single colony may support dozens of different inquiline species. The distinctions between parasites, social parasites, and inquilines are subtle, and many species may fulfill the criteria for more than one of these, as inquilines do exhibit many of the same characteristics as parasites. However, parasites are specifically not inquilines, because by definition they have a deleterious effect on the host species, while inquilines have not been confirmed to do so.
Amitermitinae is a disputed subfamily of "higher termites" now often merged with the subfamily Termitinae and is considered by ITIS as a synonym; it had previously been placed in the family Rhinotermitidae.
Termitidae is the largest family of termites consisting of 2,105 described species of which are commonly known as the higher termites. They are evolutionarily the most specialised termite group, with their highly compartmentalized hindgut lacking the flagellated protozoans common to "lower termites", which are instead replaced by bacteria. Whereas lower termites are restricted mostly to woody tissue, higher termites have diverse diets consisting of wood, grass, leaf litter, fungi, lichen, faeces, humus and soil. Around 60% of species rely on soil-feeding alone.
Nasutitermes corniger is a species of arboreal termite that is endemic to the neotropics. It is very closely related to Nasutitermes ephratae. The species has been studied relatively intensively, particularly on Barro Colorado Island, Panama. These studies and others have shown that the termite interacts with many different organisms including a bat that roosts in its nest and various species of ants that cohabit with the termite.
Kalotermitidae is a family of termites, commonly known as drywood termites. Kalotermitidae includes 21 genera and 419 species. The family has a cosmopolitan circumtropical distribution, and is found in functionally arid environments.
The fontanellar gun is a termite defense mechanism in the form of a horn-like frontal projection (nasus) on the head of the soldier caste which is capable of expelling chemical weaponry at a distance, a trait exclusive to the subfamily Nasutitermitinae. It is primarily used to ward off predators such as ants.
Hodotermes is a genus of African harvester termites in the Hodotermitidae. They range from Palaearctic North Africa, through the East African savannas to the karroid regions of southern Africa. As with harvester termites in general, they have serrated inner edges to their mandibles, and all castes have functional compound eyes. They forage for grass at night and during the day, and their pigmented workers are often observed outside the nest.
Nasutitermes triodiae, also known as the cathedral termite, is a grass-eating species of Nasutitermitinae termite that can be found in Northern Territory, Australia. It is also sometimes referred to as the spinifex termite, since it is found in the spinifex grasslands. Very little research has been done on the underground nature of this species.
Termitinae is a subfamily of termites; Amitermes and certain other genera have previously been placed in the Amitermitinae, with some workers arguing that the latter have morphologically distinct characteristics and "some important attributes that affect soil".
Nasutitermes ceylonicus, is a species of termite of the genus Nasutitermes. It is found in Sri Lanka. It is a pest of tea and coconut. It damages numerous wooden constructions, and timber in buildings.
Nasutitermes horni, is a species of termite of the genus Nasutitermes. It is found in Sri Lanka. It is not considered as a pest, although they are abundant in coconut plantations and forests.
Hospitalitermes is an Asian–Papuan genus of lichen eating termite in the subfamily Nasutitermitinae. There are 37 species currently listed, of which most are recognized for their extensive surface foraging columns. Due to their conspicuous foraging activities they are commonly known as processionary or marching termites. They often inhabit cavities inside of living trees excavated by other species of termite.
Constrictotermes is a genus of Neotropical higher termites within the subfamily Nasutitermitinae. They form large open-air foraging columns from which they travel to and from their sources of food, similar to the Indomalayan species of processionary termites. Species of this genus commonly build epigeal or arboreal nests and feed on a variety of lichens, rotted woods and mosses.
Constrictotermes cyphergaster is a Neotropical species of open-air foraging nasute termite within the genus Constrictotermes. This species is distributed widely throughout South America and lives within xeric habitats such as the savannas found in Paraguay, Bolivia, Central Brazil, and Northern Argentina. C. cyphergaster primarily builds arboreal and transient epigeic nests and mainly consumes dead woods at varying stages of decomposition.
The Syntermitinae, also known as the mandibulate nasutes, is a Neotropical subfamily of higher termites represented by 21 genera and 103 species. The soldier caste of members of this subfamily have a conspicuous horn-like projection on the head which is adapted for chemical defense, similar to the fontanellar gun of true nasute termites. However unlike true nasutes, the mandibles of the soldiers are functional and highly developed, and they are unable to expel their chemical weaponry at a distance – instead relying on direct physical contact. Some genera, such as Syntermes or Labiotermes, have a highly reduced nasus and in some species it may appear absent altogether. Although the Syntermitinae were once grouped and considered basal within the Nasutitermitinae, they are not closely related with modern cladistic analyses showing Syntermitinae to be a separate and distinct lineage that is more closely related to either the Amitermes-group or MicrocerotermesTermitinae. It is believed the nasus evolved independently in Syntermitinae in an example of convergent evolution. Genera range from southern Mexico (Cahuallitermes) to Northern Argentina with the highest diversity occurring in the Brazilian Cerrado.
Rhynchotermes is a genus of Neotropical higher termites within the subfamily Syntermitinae, represented by 8 known species. Species of this genus are known for their soldiers which have highly developed sickle-shaped mandibles and a pronounced frontal tube superficially analogous to the fontanellar guns of true nasute termites. Most species forage above the surface in the open where they primarily feed on forest leaf litter. Nests are subterranean or are shallow and epigeic.
Cubitermitinae is an Afrotropical subfamily of higher termites with 28 known genera and 147 species. The nests of most taxa are either subterranean or found within the mounds of other termite species. The most well known genus of this subfamily is Cubitermes, which commonly build epigeal nests with one or more caps used to shield the nest against rainfall, giving them a characteristic mushroom shape. Most members of this subfamily are soil-feeders.