Lymexylidae

Last updated

Ship-timber beetles
Temporal range: Aptian–Recent
Lymexylon navale.jpg
Lymexylon navale
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Coleoptera
Suborder: Polyphaga
Infraorder: Cucujiformia
Superfamily: Lymexyloidea
Family: Lymexylidae
Fleming, 1821
An adult Lymexylon navale Hylecoetus dermestoides (Lymexylidae),  - Buchenwerftkafer (10052316356).jpg
An adult Lymexylon navale

The Lymexylidae (historically often spelled Lymexylonidae), 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.

Contents

Habitat and behavior

Example of an infested tree Beetle bird (4063595266).jpg
Example of an infested tree

Lymexylon, Elateroides, and Melittomma are pests to forest trees such as chestnut, poplar, and oak, and can be found worldwide. Some species are parasitic, causing decay in living trees and damaging timber structures such as houses and ships. Wood boring activities occur primarily in the larva stage, with the larvae damaging both sapwood and heartwood. Lymexylidae larvae bore into living and decaying wood where they consume the fungus Alloascoidea hylecoeti . [1] [2]

Symbiotic relationship with fungi

Lymexylidae larvae have a symbiotic association with certain types of fungi. The fungi grow in sheltered environments where they are tended by the larvae, such as the holes burrowed into the wood and, in return, the larvae feed on the fungi. [3]

Elateroides dermestoides lays eggs into boreholes of bark beetles on a fallen beech

Specifically, this species has evolved a relationship with the yeast-like fungus Endomyces hylecoeti. Every egg the female lays is coated with fungal spores from a pouch near her ovipositor. The larvae hatch and subsequently collect some of the spores by remaining close to the egg shells for a period of time, before tunneling further into the wood. The fungi grow on the tunnel walls created by the larvae. The larvae then consume the fungus, rather than the wood itself. As the fungi require air flow to grow, the larvae ensure the tunnels are free of any debris. [4]

Species and genera

Lymexylidae contain the following genera: [5]

There are over 60 species in these genera, including:

Morphology

Adult morphology:

Immature Morphology:

Classification

The superfamily Lymexyloidea is currently within series Cucujoidea. The internal phylogeny has not been clearly understood/completed by experts. Morphological data places the family inside the Tenebrionoidea, while molecular data place it as sister taxon to Tenebrionoidea, and polyphyletic.

See also

Notes

  1. Cletus P. Kurtzman, Christie J. Robnett (2013) Alloascoidea hylecoeti gen. nov., comb. nov., Alloascoidea africana comb. nov., Ascoidea tarda sp. nov., and Nadsonia starkeyi-henricii comb. nov., new members of the Saccharomycotina (Ascomycota). FEMS Yeast Research 13: 423–432. doi: 10.1111/1567-1364.12044
  2. Caroline S. Chaboo (2015), "Beetles (Coleoptera) of Peru: A Survey of the Families. Lymexylidae Fleming, 1821", Journal of the Kansas Entomological Society, 88 (2): 258–259, doi:10.2317/kent-88-02-258-259.1
  3. Casari, Sônia A.; Teixeira, Édson Possidônio (2011). "Larva of Atractocerus brasiliensis (Lepeletier & Audinet-Serville, 1825) (Lymexylidae, Atractocerinae)". Papéis Avulsos de Zoologia. 51 (12): 197–205. doi: 10.1590/S0031-10492011001200001 . ISSN   0031-1049.
  4. Ross Piper (2007). Extraordinary Animals: An Encyclopedia of Curious and Unusual Animals . Greenwood Press.
  5. Lymexylidae Species List at Joel Hallan's Biology Catalog. Texas A&M University. Retrieved on 17 May 2012.

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References