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Wildlife of Sri Lanka |
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Sri Lanka is a tropical island situated close to the southern tip of India. The invertebrate fauna is as large as it is common to other regions of the world. There are about 2 million species of arthropods found in the world, and still it is counting. So many new species are discover up to this time also. So it is very complicated and difficult to summarize the exact number of species found within a certain region.
The following list is about Termites recorded in Sri Lanka.
Phylum: Arthropoda
Class: Insecta
Order: Blattodea
Infra Order: Isoptera
Termites are eusocial insects that are classified at the taxonomic rank of infraorder Isoptera, or as epifamily Termitoidae within the cockroach order Blattodea. Termites were once classified in a separate order from cockroaches, but recent phylogenetic studies indicate that they evolved from close ancestors of cockroaches during the Jurassic or Triassic. It is possible, however, that the first termites emerged during the Permian or even the Carboniferous. Approximately 3,106 species are currently described, with a few hundred more left to be described.
In 1913, Green compiled a concise catalogue for isopterans in Sri Lanka. [1] The first known study on termites was done by Wasmann during British period. Since then, many local and overseas scientists engaged on many studies, some in crop plantations as well. [2] [3] A detailed work on Sri Lankan termites was done by University of Peradeniya in 2012. According to this checklist, which is based on 1893 literature, a total of 64 species of termites in 27 genera and 4 families are recorded from Sri Lanka. [4] [5] [6]
Endemic species are denoted as E.
A sign of termite infestation that is very poignant is the appearance of swarmers or alates. A termite colony can get overpopulated. A new queen will strike out on her own to begin a new colony. She needs to mate with a male of the species and find a new area in which to start building her nest. Growing wings and flying enables her to do this. So each season, alates emerge from the colonies and take flight. When they do, and what triggers them to come out depend mostly on the weather and the population pressure in the termite colony. High humidity, and warm weather favour these manifestations.
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.
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.
Glyptotermes ceylonicus, is a species of damp wood termite of the genus Glyptotermes. It is endemic to high elevations Sri Lanka. It is a pest of dead and decaying wood of Hevea, Theobroma, Ficus, and Acacia species.
The Low-country tea termite,, also known as Low country live wood termite, is a species of damp wood termite of the genus Glyptotermes. It is endemic to high elevations Sri Lanka. It is a major pest of tea in low country area of Sri Lanka.
Cryptotermes ceylonicus, is a species of dry wood termite of the genus Cryptotermes. It is found in Sri Lanka. It is found in living wood, and other man-made wooden constructions. They possess teeth-less mandibles.
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.
Coptotermes ceylonicus, is a species of subterranean termite of the genus Coptotermes. It is native to India and Sri Lanka. It is a common wood destroying termites, which damage to logs, woodens structures of both natural and man-made. It is a pest of many economically valuable trees such as Hevea brasiliensis and Camellia sinensis, and also an inhabitant of Anacardium occidentale, Cocos nucifera, Ficus fergusonii, Gliricidia sepium, Grevillea robusta, Madhuca longifolia, Tamarindus indica and Theobroma cacao.
Heterotermes indicola, is a species of subterranean termite of the genus Heterotermes. It is native to tropical India, Pakistan and Sri Lanka but has extended its range into the subtropics and warm temperate areas of the Himalayan foothills to altitudes of about 2,000 m (6,600 ft). It causes damage to timber in buildings and is one of the most destructive termites in urban and agricultural areas in the world. Soldiers are about 4.1-4.9mm long. Extracts of garlic and Calotropis procera are known to have termiticidal effects on H. indicola.
Odontotermes ceylonicus, is a species of termite of the genus Odontotermes. It is native to India and Sri Lanka. Though nests in the ground, they never construct termitaria. It attacks many dead, diseased rotten plant roots and wooden buildings. It is a major pest of sugarcane and a secondary pest of tea.
Odontotermes escherichi, is a small species of termite of the genus Odontotermes. It is native to India, Sri Lanka and Peninsular Malaysia. It attacks many dead, tree stems and decaying logs.
Odontotermes horni, is a species of termite of the genus Odontotermes. It is native to India and Sri Lanka. It attacks many dead, decaying trees and fertilized soil. Though nests on ground, they do not construct a termitaria. It is a pest of tea, coconut and sugarcane.
Odontotermes redemanni, is a species of termite of the genus Odontotermes. It is native to India and Sri Lanka. It damages wooden constructions. It is a pest of sugarcane, tea and coconut. They construct termitaria during November to March when rainfall and ambient temperature become low. Underground termite nests of this species are a natural host for the important Traditional Chinese Medicine fungus Xylaria nigripes, also known as Wu Ling Shen.
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.
Odontotermes, commonly known as the fungus-growing termites, is a termite genus belonging to family Termitidae, which is native to the Old World. They are most destructive in wooden homes, and are agricultural pests in the tropics and subtropics of Africa and Asia. It is the most diverse termite genus in Africa, with 78 species recorded.
Glyptotermes is a genus of termite in the family Kalotermitidae. With 127 species worldwide as of 2013, is the family's most speciose genus, and the second most speciose in the New World after Cryptotermes.