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Brief Summary

provided by Catalog of Hymenoptera in America North of Mexico
Larvae of this family are wood borers, members of the Siricinae in coniferous trees and those of the Tremicinae in angiosperm trees. The North American species are not known to attack sound trees, only those that have been weakened or recently felled. Fire damaged trees are particularly attractive to adults for oviposition, and large populations may build up in recent burns. The boring of the larvae reduces the quality of lumber and the emergence of the adults may damage buildings where they may bore through plaster walls, carpeting, and hardwood floors to exit. In Europe, Urocerus gigas gigas (L.) has been reported to cut through metal and lead telephone cables. Because of their habits, some species have been spread by commerce to many parts of the world, and it is not uncommon to find them out of their normal range. ~The family is cosmopolitan except perhaps for South America. About 85 species in 9 genera are known from the world. The common names horntails or woodwasps are sometimes used for this family.
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Catalog of Hymenoptera in America North of Mexico. 1979. Prepared cooperatively by specialists on the various groups of Hymenoptera under the direction of Karl V. Krombein and Paul D. Hurd, Jr., Smithsonian Institution, and David R. Smith and B. D. Burks, Systematic Entomology Laboratory, Insect Identification and Beneficial Insect Introduction Institute. Science and Education Administration, United States Department of Agriculture.

Taxonomical classification

provided by EOL authors

The Family Siricidae is a family of insects in the Order Hyemoptera, commonly known as horntails. It is divided into two genera: Genus Sirex and Genus Tremex.

The full classification of horntails is listed below:

Kingdom Animalia

Subkingdom Eumetazoa

Bilateria

Phylum Arthropoda

Subphylum Hexapoda

Class Insecta

Order Hymenoptera

Family Siricidae

2 genera

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Horntail

provided by wikipedia EN

Horntail or wood wasp are any of the 150 non-social species of the hymenopteran family Siricidae, a type of wood-eating sawfly. The common name "horntail" derives from the stout, spine-like structure at the end of the adult's abdomen, which is used to pierce the host's bark to allow the eggs to be inserted into the wood (the ovipositor is typically longer and also projects posteriorly, but it is not the source of the name). A typical adult horntail is brown, blue, or black with yellow or red parts, and may often reach up to 4 cm (1.6 in) long. The pigeon horntail (Tremex columba) can grow up to 5 cm (2.0 in) long (not counting the ovipositor), among the longest of all Hymenoptera.

This family was formerly believed to be the sole living representative of the superfamily Siricoidea, a group well represented in Paleogene and Mesozoic times, but the family Anaxyelidae has been linked to this group as well. Siricidae has two subfamilies, Siricinae and Tremecinae. Siricinae infest needle-leaved trees[1] and Tremecinae infest broad-leaved trees.[1][2] There are ten[1] living genera placed in the family, and an additional three genera described from fossils.[3][4]

Female horntails lay their eggs in trees. The larvae bore into the wood and live in the tree for up to two years, possibly more. They typically migrate to just under the bark before pupation.

Description

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Sirex noctilio ("Sirex woodwasp") from New Zealand, on Pinus radiata. The spiral groove on the ovipositor is visible.
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Giant horntail (Urocerus gigas)

Members of three genera of horntail attack dying or recently killed balsam fir and spruce.[5] The female selects a log or unhealthy tree and settles down to bore a hole through the bark to reach the wood. The boring instrument is stiff and straight, but has a hinge that allows the female to bore perpendicular to her body axis. The insect does not push the boring tool into the wood, rather, two parts work against each other as described below. The female may make several holes before she finds wood that she considers suitable for her larva. She then lays an egg and repeats the process on other places of the same log or tree.

Once the egg hatches, the six-legged, whitish larva uses it jaws to begin excavating a long tunnel in which it will live until it is fully grown, by which time it can be up to 215 mm long. At this time, the larva will spin a silken cocoon and change into a pupa, but before this, the larva takes the precautionary measure of advancing the tunnel close to the inner bark, so that the mature, winged insect will not have to travel far through the wood and risk damaging its delicate wings, although there is a record of a Sirex-infested tree having been cut into rafters which were used in building a roof and covered with sheet-lead an eighth of an inch thick. One of the rafters contained a Sirex in either the larval or pupal stage; and when the adult insect sought its freedom, it found the way obstructed by the lead. It went right through, apparently finding lead not much more difficult to deal with than bark.[6]

Populations increase rapidly only where brood material is abundant. The life cycle usually requires two years, and adults are usually in flight from late July to early September. Wood-rotting fungi found in horntail tunnels cause very rapid deterioration of the wood and quickly reduce opportunities for timber salvage.

An ichneumon wasp (Rhyssa persuasoria) lays parasitoid grubs in Sirex, which kill them.[6]

Technological inspiration

The female wood wasp lays eggs inside trees, and its methods of doing so have inspired scientists to come up with new and safer surgical probes that they expect to be more efficient.

The wood wasp ovipositor itself contains two interlocking valves. Each valve is covered with teeth that are backward-facing,[7] with the teeth of one valve catching onto the wood to provide resistance, and the other valve moving forward and taking a slight step. The second valve then catches the wood to provide continued resistance as the first valve moves forward. Thus by quick oscillation, the valves alternate in providing resistance and moving forward, the process itself leads in the ovipositor drilling almost an inch into the sapwood with minimal force being applied and without the ovipositor buckling or breaking.

Researchers and scientists inspired by this system have created a prototype neurosurgical probe that works on the same principle.[8][9] Its needle is made of silicon, with two oscillating valves that are covered with micron-sized teeth that too face backward. This enables it to penetrate deep into the brain causing little damage. According to the New Scientist magazine, "Unlike existing rigid surgical probes, the device will be flexible enough to move along the safest possible route, bypassing high-risk area of the brain during surgery, for example".[10] A probe like this would considerably reduce the number of incisions necessary to access areas that are difficult to reach.

Genera

These genera belong to the family Siricidae[11]

These extinct genera have been referred to the family as well:

References

  1. ^ a b c Schiff, N. M.; Goulet, H.; Smith, D. R.; Boudreault, C.; Wilson, A. D.; Scheffler, B. E. (2012). "Siricidae (Hymenoptera: Symphyta: Siricoidea) of the western hemisphere". Canadian Journal of Arthropod Identification. 21. doi:10.3752/cjai.2012.21.
  2. ^ Kuramitsu, Kazumu; Kosaki, Atsuya; Ishihara, Teruhito; Yamada, Hideo; Watanabe, Kyohei (2016-10-28). "Infestation of the woodwasp Tremex apicalis Matsumura (Hymenoptera, Siricidae) on the large-leaf dogwood Swida macrophylla (Wall.) with biological notes on its parasitoid wasps". Journal of Hymenoptera Research. 52: 71–79. doi:10.3897/jhr.52.10060. ISSN 1314-2607.
  3. ^ Wedmann, S.; Pouillon, J. M.; Nel, A. (2014). "New Palaeogene horntail wasps (Hymenoptera, Siricidae) and a discussion of their fossil record". Zootaxa. 3869 (1): 33–43. doi:10.11646/zootaxa.3869.1.3. PMID 25283896.
  4. ^ Archibald, S.B.; Rasnitsyn, A.P. (2015). "New early Eocene Siricomorpha (Hymenoptera: Symphyta: Pamphiliidae, Siricidae, Cephidae) from the Okanagan Highlands, western North America". The Canadian Entomologist. 148 (2): 209–228. doi:10.4039/tce.2015.55. S2CID 85743832.
  5. ^ Rose, A.H.; Lindquist, O.H. 1985. Insects of eastern spruces, fir and, hemlock, revised edition. Gov't Can., Can. For. Serv., Ottawa, For. Tech. Rep. 23. 159 p. (cited in Coates et al. 1994, cited orig ed 1977)
  6. ^ a b Bees, Wasps, Ants and Allied Insects of the British Isles, Edward Step (1932)
  7. ^ Richards, Guy. "Wasps play part in surgical probe". Materials Worlds Magazine. Retrieved 10 May 2012.
  8. ^ "Wasp-inspired robotic needle moves closer to surgery | Imperial News | Imperial College London". Imperial News. Retrieved 2021-01-19.
  9. ^ "Surgical tool inspired by ovipositor of parasitic wasps". The Engineer. 2020-09-30. Retrieved 2021-01-19.
  10. ^ Frasson, Luca; Parittotokkaporn, Tassanai; Davies, Brian L.; Rodriguez y Baena, Ferdinando (2010). "Early developments of a novel smart actuator inspired by nature". International Journal of Intelligent Systems Technologies and Applications. 8: 409–422. doi:10.1504/IJISTA.2010.030220. S2CID 8029559.
  11. ^ Taeger, A.; Liston, A.D.; Prous, M.; Groll, E.K.; et al. (2018). "ECatSym – Electronic World Catalog of Symphyta (Insecta, Hymenoptera)". Senckenberg Deutsches Entomologisches Institut (SDEI), Müncheberg. Retrieved 2019-06-01.
  12. ^ a b c Archibald, S. B.; Rasnitsyn, A. P. (2022). "The early Eocene Eourocerus anguliterreus gen. et sp. nov (Hymenoptera, Siricidae) from Republic, Washington". Zootaxa. 5105 (2): 289–295. doi:10.11646/zootaxa.5105.2.8.

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Horntail: Brief Summary

provided by wikipedia EN

Horntail or wood wasp are any of the 150 non-social species of the hymenopteran family Siricidae, a type of wood-eating sawfly. The common name "horntail" derives from the stout, spine-like structure at the end of the adult's abdomen, which is used to pierce the host's bark to allow the eggs to be inserted into the wood (the ovipositor is typically longer and also projects posteriorly, but it is not the source of the name). A typical adult horntail is brown, blue, or black with yellow or red parts, and may often reach up to 4 cm (1.6 in) long. The pigeon horntail (Tremex columba) can grow up to 5 cm (2.0 in) long (not counting the ovipositor), among the longest of all Hymenoptera.

This family was formerly believed to be the sole living representative of the superfamily Siricoidea, a group well represented in Paleogene and Mesozoic times, but the family Anaxyelidae has been linked to this group as well. Siricidae has two subfamilies, Siricinae and Tremecinae. Siricinae infest needle-leaved trees and Tremecinae infest broad-leaved trees. There are ten living genera placed in the family, and an additional three genera described from fossils.

Female horntails lay their eggs in trees. The larvae bore into the wood and live in the tree for up to two years, possibly more. They typically migrate to just under the bark before pupation.

license
cc-by-sa-3.0
copyright
Wikipedia authors and editors
original
visit source
partner site
wikipedia EN