Lyctus carbonarius

Last updated

Southern lyctus beetle
Southern Lyctus beetle.jpg
Scientific classification
Kingdom:
Phylum:
Class:
Order:
Superfamily:
Family:
Subfamily:
Genus:
Species:
L. carbonarius
Binomial name
Lyctus carbonarius
(Waltl, 1832)
Synonyms

Lyctus planicollisLeConte, 1859

Lyctus carbonarius is a wood-boring beetle in the family Bostrichidae (formerly in the family Lyctidae, which is now a subfamily of Bostrichidae), commonly known as the southern lyctus beetle or lyctid powderpost beetle. [1] It is a serious pest of hardwoods including ash, hickory, oak, maple and mahogany and can infest many products in the home including hardwood flooring and structural timbers, plywood, furniture, tool handles, picture frames, baskets and ladders. Timber can be infested in one location and then be transported large distances by ship, after which the beetles can emerge and spread the infestation to new areas. [2]

Contents

Lyctus planicollis LeConte, 1859 is considered a synonym of the species of Lyctus carbonarius. [3] [4]

Description

The adult beetle ranges from four to six millimetres in length and is a dark brownish-black. The head is prominent and is not covered by the pronotum. The antennae have eleven segments, the end two being broadened giving a club-like effect. The body is elongated and slightly flattened with the pronotum wider than it is long. The elytra are ridged longitudinally, with double rows of small puncture marks between the ridges. The body is covered by a sparse, short yellowish down. [2] [5]

Life cycle

A female laying eggs. Normally the ovipositor would deposit eggs inside the wood. Lyctus planicollis.jpg
A female laying eggs. Normally the ovipositor would deposit eggs inside the wood.

The female beetle mates soon after emerging in the spring and lays up to fifty eggs over the course of a week. The eggs are white, cylindrical and about one millimetre long. They are laid deep inside holes in wood, either in the tunnels made by emerging adults or in pores, cracks and crevices. The eggs hatch in one to three weeks depending on the temperature. [2]

The larvae are cream-coloured and grow to about seven millimetres long as they tunnel deeper into the wood, leaving behind them the powderlike frass of wood debris that gives them their common name. They feed on the starchy content of the wood as they are unable to digest cellulose. Young larvae chew their way along the grain of sapwood but older larvae may tunnel across the grain. They may come near to the surface but do not break through. When the larvae are ready to pupate, they build pupal chambers close to the surface. [2]

Metamorphosis takes from twelve days to a month. The adults break out of the pupae and chew their way to the surface leaving behind circular holes. The little wisps of sawdust that fall from these may be the first sign of an infestation. The adult beetles are nocturnal and may live for up to three months. The whole life cycle takes about a year but can vary from six months to four years. In heated buildings development occurs quickly but in adverse environments, growth is slower and the larvae may hibernate in colder regions. This is the main reason for the variability in the length of the life cycle. [2]

Damage

The larval stage is responsible for nearly all the damage done by the beetle. They feed on many of the various hardwoods used in wood paneling, door and window frames, furniture, [2] baskets, hardwood trim and flooring in homes. Only sapwood is attacked. [6] Infestation usually occurs prior to construction of the article. Varnished, painted or polished surfaces are not normally susceptible to attack but the female beetle may still lay her eggs in empty tunnels created by previous beetle occupants. [1] Subfloors, joists and rafters are usually made of pine or other softwood and generally escape infestation. Imported tropical hardwoods may be heavily infested because of poor drying and storage practices before shipment. [2]

Related Research Articles

<span class="mw-page-title-main">Bookworm (insect)</span> Any insect that is said to bore through books

Bookworm is a general name for any insect that is said to bore through books.

<span class="mw-page-title-main">Woodworm</span> Wood-eating beetle larva

A woodworm is the wood-eating larva of many species of beetle. It is also a generic description given to the infestation of a wooden item by these larvae.

<span class="mw-page-title-main">Deathwatch beetle</span> Species of woodboring beetle

The deathwatch beetle is a species of woodboring beetle that sometimes infests the structural timbers of old buildings. The adult beetle is brown and measures on average 7 mm (0.3 in) long. Eggs are laid in dark crevices in old wood inside buildings, trees, and inside tunnels left behind by previous larvae. The larvae bore into the timber, feeding for up to ten years before pupating, and later emerging from the wood as adult beetles. Timber that has been damp and is affected by fungal decay is soft enough for the larvae to chew through. They obtain nourishment by using enzymes present in their gut to digest the cellulose and hemicellulose in the wood.

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

The Lymexylidae, also known as ship-timber beetles, are a family of wood-boring beetles. Lymexylidae belong to the suborder Polyphaga and are the sole member of the superfamily Lymexyloidea.

<span class="mw-page-title-main">Powderpost beetle</span> Subfamily of beetles

Powderpost beetles are a group of seventy species of woodboring beetles classified in the insect subfamily Lyctinae. These beetles, along with spider beetles, death watch beetles, common furniture beetles, skin beetles, and others, make up the superfamily Bostrichoidea. While most woodborers have a large prothorax, powderpost beetles do not, making their heads more visible. In addition to this, their antennae have two-jointed clubs. They are considered pests and attack deciduous trees, over time reducing the wood to a powdery dust. The damage caused by longhorn beetles is often confused with that of powderpost beetles, but the two groups are unrelated. The larvae of the Cerambycidae are white, straight and generally flat-headed, whereas those of the Bostrichidae are white and C-shaped.

<span class="mw-page-title-main">Common furniture beetle</span> Species of beetle

The common furniture beetle or common house borer is a woodboring beetle originally from Europe but now distributed worldwide. In the larval stage it bores in wood and feeds upon it. Adult Anobium punctatum measure 2.7–4.5 millimetres (0.11–0.18 in) in length. They have brown ellipsoidal bodies with a prothorax resembling a monk's cowl.

<i>Hylotrupes</i> Genus of beetles

Hylotrupes is a monotypic genus of woodboring beetles in the family Cerambycidae, the longhorn beetles. The sole species, Hylotrupes bajulus, is known by several common names, including house longhorn beetle, old house borer, and European house borer. In South Africa it also is known as the Italian beetle because of infested packing cases that had come from Italy. Hylotrupes is the only genus in the tribe Hylotrupini

<span class="mw-page-title-main">Cleridae</span> Checkered beetles

Cleridae are a family of beetles of the superfamily Cleroidea. They are commonly known as checkered beetles. The family Cleridae has a worldwide distribution, and a variety of habitats and feeding preferences.

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

Ptinidae is a family of beetles in the superfamily Bostrichoidea. There are at least 220 genera and 2,200 described species in Ptinidae worldwide. The family includes spider beetles and deathwatch beetles.

<span class="mw-page-title-main">Wharf borer</span> Species of beetle

The wharf borer, Nacerdes melanura, belongs to the insect order Coleoptera, the beetles. They belong to the family Oedemeridae, which are commonly known as false blister beetles. Wharf borers are present in all the states of the USA except for Florida. It takes about a year to develop from an egg to an adult. The insect is called the 'wharf borer' because the larval stage of this insect is often found on pilings and timbers of wharves, especially along coastal areas. The adult beetles can be identified via a black band across the end of both elytra, or wing covers. In addition, wharf borers can be distinguished from other members of the family Oedemeridae via the presence of a single spur on the tibia of the forelegs, and the distance between both eyes. Eggs are oviposited on rotten wood where larvae hatch and burrow to feed on rotten wood. Adults do not feed and depend on stored energy reserves accumulated during the larval stage. They are considered to be a pest because they damage wood used in building infrastructures.

The banded alder borer, Rosalia funebris, is a member of the very diverse family of longhorn beetles.

<i>Neoclytus acuminatus</i> Species of beetle

Neoclytus acuminatus, the red-headed ash borer, is a common North American species in the longhorn beetle family (Cerambycidae).

<i>Cryptotermes brevis</i> Species of termite

Cryptotermes brevis is a species of termite in the family Kalotermitidae, commonly known as the West Indian drywood termite or the powderpost termite. It is able to live completely inside timber structures or articles made of wood such as furniture without any outside source of water. It is frequently introduced into new locations inadvertently, and causes damage to the structural timbers of buildings and to wooden objects such as furniture.

<i>Xylosandrus compactus</i> Species of beetle

Xylosandrus compactus is a species of ambrosia beetle. Common names for this beetle include black twig borer, black coffee borer, black coffee twig borer and tea stem borer. The adult beetle is dark brown or black and inconspicuous; it bores into a twig of a host plant and lays its eggs, and the larvae create further tunnels through the plant tissues. These beetles are agricultural pests that damage the shoots of such crops as coffee, tea, cocoa and avocado.

<i>Platypus cylindrus</i> Species of beetle

Platypus cylindrus, commonly known as the oak pinhole borer, is a species of ambrosia beetle in the weevil family Scolytinae. The adults and larvae burrow under the bark of mature oak trees. It is native to Europe.

<i>Dendroctonus terebrans</i> Species of beetle

Dendroctonus terebrans, the black turpentine beetle, is a species of bark beetle native to the eastern United States. Its larvae tunnel under the bark of pine trees, weakening and sometimes killing the trees.

<i>Hylecoetus dermestoides</i> Species of beetle

Hylecoetus dermestoides is a species of ship-timber beetles native to Europe.

Xyloterinus is a genus of typical bark beetles in the family Curculionidae. This is a monotypic genus and the one described species is Xyloterinus politus. It is native to North America where it infests both hardwood and softwood trees, as well as stacks of logs.

<i>Polycaon stoutii</i> Species of beetle

Polycaon stoutii, the black polycaon or Stout's branch borer, is a species of woodboring beetle in the Bostrichidae family. It is found in North America in British Columbia, the Pacific Coast states, and Arizona, but has spread elsewhere due to the shipping of wood products.

<i>Arrenodes minutus</i> Species of beetle

Arrenodes minutus, commonly known as the oak timberworm, is a species of primitive weevil in the family Brentidae. These beetles are pests of hardwoods in North America. Adult oak timberworms are shiny, elongate, and range 7 to 25 mm in length. They are reddish-brown to brownish-black in coloration, with yellow spots on their elytra. Adults display strong sexual dimorphism; females have long, slender, straight mouthparts, while males possess flattened, broadened mouthparts with large mandibles. Males are known to be aggressive and use these large mandibles for combat. These mandibles are also used in courtship. Larvae are elongate, cylindrical, white, and curved. They have 3 pairs of jointed legs on the thorax and 1 pair of prolegs near the end of the abdomen.

References

  1. 1 2 Texas AgriLife Extension
  2. 1 2 3 4 5 6 7 University of Florida
  3. "Lyctus planicollis LeConte, 1859". GBIF. Retrieved 2018-04-24.
  4. "Lyctus carbonarius Report". Integrated Taxonomic Information System. Retrieved 2018-04-24.
  5. Forestry images
  6. Forest and Timber Insects in New Zealand No. 33