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(invertebrate zoology)
The horntails, a family of the Hymenoptera in the superfamily Siricoidea; females use a stout, hornlike ovipositor to deposit eggs in wood.



(horntails), a family of symphytic hymenopterous insects having a cylindrical abdomen. The females have a stout, sometimes very long, ovipositor (hence the common name). Adult horntails do not feed.

Of the approximately 200 species of horntails, 20 are found in the USSR. The insects develop in wood, mainly the wood of coniferous trees. The female pierces the bark with the ovipositor and deposits the eggs, one to three at a time, in a row along the trunk. Spores of wood-destroying fungi, located in a pouch on the female’s abdomen, simultaneously enter the wound in the bark. The cylindrical, white or yellowish larva, which has three pairs of thoracic legs and a spine at the end of the abdomen, gnaws a passage in the wood and feeds on the wood-destroying fungi, which line the passage. Pupation occurs in the wood. The entire developmental cycle lasts one or two years.

All horntails are pests of lumber. Many species attack externally healthy trees, selecting trunks with mechanical injuries. In the USSR the greatest harm is done by Tremex fuscicornis, which infests hardwood, and by Sirex gigas, Paururus juvencus, Paururus ermak, and Xeris spectrum, which are pests of conifers.


References in periodicals archive ?
In The Philosopher's Stone, Norbert provides opportunities for individual characters to reveal certain traits and qualities such as Hagrid's tenderness and Malfoy's slyness, and the Hungarian Horntail in The Goblet of Fire enables Harry to express his noble sense of fair play and Ron his resentment and remorse.
Hiding in the dark depths of the department are miniature - but still intimidating - models of a Hungarian Horntail dragon, Aragog the giant spider, Dementors and even Sirius Black.
As fate would have it, Harry draws the most fearsome dragon of all - the Hungarian Horntail.
Other invertebrates that regularly startle both city and country gardeners alike include the great grey or leopard slug, a large spotted slug or the giant horntail, which gets its name from the long, pointed tube at its rear, commonly mistaken for a sting.
Other invertebrates that regularly startle gardeners include the great Grey or leopard slug, a large spotted slug or the giant horntail.
For the spell you would need the feather of a phoenix, coloured eggs of a caterpillar, black silk of a red wool-spinner and the eye of a mini Hungarian Horntail.
Unfortunately, our hero Harry draws the most fearsome dragon of all - the Hungarian Horntail.
BOY wizard Harry Potter is menaced by a ferocious Hungarian Horntail dragon in his latest movie adventure.
Kit's is the First Task, which is a variation on the Quidditch match, with Harry whizzing around on his Firebolt, outwitting the deadliest dragon (Hungarian Horntail, in case you don't know).
This picture of the Hungarian Horntail is one of the first released from the film Harry Potter And The Goblet Of Fire.
If you know your Hungarian Horntails from your Swedish Short-Snouts, join Seven Stories for a cracking Easter full of eggcellent activities, hunt the dragon egg trails and story times followed by a fierce round of Dragon Bingo.
They anticipate raising $10,000 for the charity in 2007 with participation from bands such as Draco and the Malfoys, the Hungarian Horntails, Ginny and the Heartbreakers and the Fleur Delacours.