Xeris spectrum

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Xeris spectrum
Xeris spectrum (Hymenoptera- Symphyta) - Schwarze Kiefernholzwespe (7615319732).jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Siricidae
Genus: Xeris
Species:
X. spectrum
Binomial name
Xeris spectrum

Xeris spectrum is a kind of horntail or wood wasp, that lives in coniferous forests. It is large wasp with a powerful ovipositor in females. [1] Unlike other Siricid Wood wasps, Xeris spectrum does not have symbiotic fungi to aid its larvae as they burrow in the wood of fir and other conifer trees making it unique in the Siricidae. [2] It is widespread and is found in large parts of Europe, Asia, Africa and North America. [3]

Contents

Appearance

The body of Xeris spectrum is cylindrical. The head is broadest behind the eyes, and antennae are thread-shaped. Both sexes are equal in length, between 12 and 28 millimetres (0.47 and 1.10 in). The body is black or dark brown and shiny with white spots behind the eyes and on the sides of the prothorax. Xeris spectrum's legs are orange-red. Males have brown rings around the leg.

The body of the larvae is cylindrical and slightly flattened and is up to 25 millimetres (0.98 in) long. The pupa is 13 to 50 millimetres (0.51 to 1.97 in) in length. The antennae of the pupa extend beyond the wings at the level of the eighth segment.

Behavior

Damaged wood from Xeris spectrum galleries and pupal chambers Wood Wasp galleries and pupal chambers.jpg
Damaged wood from Xeris spectrum galleries and pupal chambers

Xeris spectrum are found in open pine forests. Males often begin to fly a few days earlier than females. The females drill their ovipositors into the tree, just under the bark, and deposit their eggs. Females lay eggs in coniferous trees, usually spruce, pine and larch.

Although Xeris spectrum does not have any symbiotic fungi, it often takes advantage of the fungal symbionts of other wood wasp species. A study of the reproductive strategies of Xeris spectrum showed that the females often lay their eggs on wood where other wood wasps of species with symbiotic fungi have already laid their eggs. This allows the Xeris spectrum larvae to benefit from the fungi. In addition, adult Xeris spectrum emerge from their holes at two different times: one group emerges in summer with the species of other wood wasps, while the other group emerges the next spring. [4]

The larvae are very different from the adults, both in lifestyle and appearance. The newly hatched larvae have access to food in the wood of damaged trees. As the larvae gnaw on the wood, the holes grow wider and deeper. Evidence of the larvae is noticeable in the deposits of wood chips and faeces that are left behind by the larvae. Just before the chrysalis stage larva boring a small chamber about 2 centimetres (0.79 in) into the tree.

Xeris spectrum belongs to the group of insects with complete metamorphosis (Holometabola), who undergoes a metamorphosis during development. Between the larval stage and the adult stage is the chrysalis stage, a rest period, in which wasps inner and outer bodies change. The larvae's pliable and soft body is transformed into a pupa with a hard shell. When the shell is hard starting transformation from larva to the adult. The internal organs are lost in varying degrees down to a cell mass. A reorganization takes place and the animal transformed. The length of the pupa phase varies according to temperature. The entire development from egg to adult takes several years.

Damage

Xeris spectrum is considered to be a pest in the timber industry. The damage caused by the wasp damages the wood and decreases its value. Xeris spectrum is most prevalent in homogeneous stands of fir and mixed stands of fir and spruce that have been damaged by wind, fire, snow and pathogenic fungi. The density of the larvae can reach up to 60 specimens in 1 metre (3 ft 3 in) of tree stem. [2]

Related Research Articles

<span class="mw-page-title-main">Pupa</span> Life stage of some insects undergoing transformation

A pupa is the life stage of some insects undergoing transformation between immature and mature stages. Insects that go through a pupal stage are holometabolous: they go through four distinct stages in their life cycle, the stages thereof being egg, larva, pupa, and imago. The processes of entering and completing the pupal stage are controlled by the insect's hormones, especially juvenile hormone, prothoracicotropic hormone, and ecdysone. The act of becoming a pupa is called pupation, and the act of emerging from the pupal case is called eclosion or emergence.

<span class="mw-page-title-main">Sawfly</span> Suborder of insects

Sawflies are the insects of the suborder Symphyta within the order Hymenoptera, alongside ants, bees, and wasps. The common name comes from the saw-like appearance of the ovipositor, which the females use to cut into the plants where they lay their eggs. The name is associated especially with the Tenthredinoidea, by far the largest superfamily in the suborder, with about 7,000 known species; in the entire suborder, there are 8,000 described species in more than 800 genera. Symphyta is paraphyletic, consisting of several basal groups within the order Hymenoptera, each one rooted inside the previous group, ending with the Apocrita which are not sawflies.

<span class="mw-page-title-main">Horntail</span> Family of sawflies

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. 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 can grow up to 5 cm (2.0 in) long, among the longest of all Hymenoptera.

<span class="mw-page-title-main">Ripiphoridae</span> Family of beetles

Ripiphoridae is a cosmopolitan family of some 450 described species of beetles sometimes called "wedge-shaped beetles". Ripiphoridae are unusual among beetle families in that many species are hypermetamorphic parasitoids, an attribute that they share with the Meloidae. Members of the family differ in their choice of hosts, but most attack various species of bees or wasps, while some others attack cockroaches or beetles. Many species of Ripiphoridae have abbreviated elytra, and flabellate or pectinate antennae.

<span class="mw-page-title-main">Mycangium</span>

The term mycangium is used in biology for special structures on the body of an animal that are adapted for the transport of symbiotic fungi. This is seen in many xylophagous insects, which apparently derive much of their nutrition from the digestion of various fungi that are growing amidst the wood fibers. In some cases, as in ambrosia beetles, the fungi are the sole food, and the excavations in the wood are simply to make a suitable microenvironment for the fungus to grow. In other cases, wood tissue is the main food, and fungi weaken the defense response from the host plant.

<i>Xanthocryptus novozealandicus</i> Species of wasp

Xanthocryptus novozealandicus, the lemon tree borer parasite, is a wasp in the family Ichneumonidae. It is a native insect of New Zealand. It is also found in Australia and New Guinea. Females hunt for larvae of wood-boring beetles around March, including the lemon tree borer, a native cerambycid that tunnels into citrus trees, grapes and many native species. When a suitable host is found, the female pushes her ovipositor through the wood and injects her eggs into the grub. This has the incidental benefit of helping to control some pests. X. novozealandicus prefers to prey on second year lemon tree borer larvae. This specific parasite prefers to prey on larger second year larvae due to its larger size.

<i>Sirex juvencus</i> Species of sawfly

Sirex juvencus is a species of horntail found in Europe, Siberia, Sakhalin Island, Japan, the Philippines, Algeria and several other countries. Its common name is steely-blue wood wasp because of its color.

<i>Zeiraphera canadensis</i> Species of moth

Zeiraphera canadensis, the spruce bud moth, is a moth of the family Tortricidae. It is a small brown moth mainly found in North America, specifically New Brunswick, Quebec, and the north-eastern United States. The adult moth flutters quickly, and stays low among trees during the day and higher above tree cover after sunset. The spruce bud moth relies primarily on the white spruce tree as a host plant. Both male and female spruce bud moths mate multiply, however males have the ability to secrete accessory gland proteins that prevent female re-mating. The moth is univoltine, meaning only one generation hatches per year, and its eggs overwinter from July to May. The species Z. ratzeburgiana is very similar to Z. canadensis and can only be distinguished by the presence of an anal comb in Z. canadensis.

<i>Rhyssa persuasoria</i> Species of wasp

Rhyssa persuasoria, also known as the sabre wasp, is a species belonging to the family Ichneumonidae subfamily Rhyssinae. Members of this subfamily, including those of Rhyssa and the allied Megarhyssa, are also known collectively as giant ichneumonid wasps or giant ichneumons.

<span class="mw-page-title-main">Sirex woodwasp</span> Species of sawfly

The sirex woodwasp is a species of horntail, native to Europe, Asia, and northern Africa. Adults vary in length from 9 to 36 mm.

<i>Megarhyssa nortoni</i> Species of wasp

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<span class="mw-page-title-main">Ibaliidae</span> Family of wasps

The Ibaliidae are a small family of the hymenopteran superfamily Cynipoidea. Ibaliidae differ from most of the cynipoids by the larvae being parasitoids on other wasp larvae in the group Siricidae. The Ibaliidae comprise three extant genera of fairly large wasps, with a total of 20 species, and is a sister group to the rest of the cynipoids except the small subfamily Austrocynipidae.

<i>Amylostereum</i> Genus of fungi

Amylostereum is the single genus in the fungal family Amylostereaceae. The genus currently comprises four saprotrophic and parasitic species, which live off living or dead wood. The Amylostereaceae cause white rot in the wood by disintegrating the tissue component lignin. They produce crust-like, partially wavy fruit bodies on the surface of infested trees, which are similar to those produced by Stereum species.

<i>Platypus apicalis</i> Wood-boring beetle endemic to New Zealand

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<i>Diprion pini</i> Species of sawfly

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<i>Ibalia leucospoides</i> Species of wasp

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<i>Cryptocercus punctulatus</i> Species of cockroach

Cryptocercus punctulatus, known generally as brown-hooded cockroach, is a species of cockroach in the family Cryptocercidae. Other common names include the woodroach, wingless wood roach, and eastern wood-eating cockroach. It is found in North America.

Urocerus japonicus, commonly known as the Japanese horntail, is a species of sawfly, native to southeastern Asia. Studies show that the dispersal distance of the female is higher than the male. The fungal species Amylostereum laevigatum had its first appearance in Japan via this sawfly.

Lathrolestes luteolator is a species of wasp in the family Ichneumonidae. it is native to North America and is a parasitoid of various species of sawfly larvae. In the 1990s, it started to parasitise the larvae of the invasive amber-marked birch leaf miner in Alberta. When this pest spread to Alaska, the wasp was used in biological pest control.

<i>Callophrys nelsoni</i> Species of Lepidoptera

Callophrys nelsoni, or Nelson's hairstreak, is a species of butterfly belonging to the genus Callophrys, wingspan of approximately 1 to 1.5 inches. Like many members of the Lycaenidae family, this butterfly has distinctive rod-like antennae. Callophrys nelsoni are gernually found throughout the west coast of the United States. Although they can be found along the very bottom of Canada's British Columbia and down to Baja California Norte.

References

  1. Solheim, H (2006). "Treveps og assosierte sopper i Norge". Agarica. 26: 87–95. Retrieved 2009-11-07.
  2. 1 2 Kolk, A. & Starzyk, J. R. (1996). "The Atlas of Forest Insect Pests: Xeris spectrum (L.)". Bugwood Network. Retrieved 2009-11-07.
  3. Nathan M. Schiff; Steven A. Valley; James R. LaBonte & David R. Smith. "Guide to the siricid wood wasps of" (PDF). United States Forest Service.
  4. Fukuda, Hideshi; Hijii, Naoki (1997). "Reproductive strategy of a woodwasp with no fungal symbionts, Xeris spectrum (Hymenoptera: Siricidae)". Oecologia. 112 (4): 551–556. doi:10.1007/s004420050344. JSTOR   4221812.