Buprestidae is a family of beetles known as jewel beetles or metallic wood-boring beetles because of their glossy, iridescent colors. Larvae of this family are known as flatheaded borers. The family is among the largest of the beetles, with some 15,500 species known in 775 genera. In addition, almost 100 fossil species have been described.

The larger and more spectacularly colored jewel beetles are highly prized by insect collectors. The elytra of some Buprestidae species have been traditionally used in beetlewing jewellery and decoration in certain countries such as India, Thailand, and Japan.

Description and ecology

Shape is generally cylindrical or elongated to ovoid, with lengths ranging from , although most species are under . Catoxantha, Chrysaspis, Euchroma, and Megaloxantha contain the largest species. A variety of bright colors is known, often in complicated patterns. The iridescence common to these beetles is not due to pigments in the exoskeleton, but instead is caused by structural coloration, in which microscopic texture in their cuticle selectively reflects specific frequencies of light in particular directions. This is the same effect that makes a compact disc reflect multiple colors.

The larvae bore through roots, logs, stems, and leaves of various types of plants, ranging from trees to grasses. The wood-boring types generally favor dying or dead branches on otherwise-healthy trees, while a few types attack green wood; some of these are serious pests capable of killing trees and causing major economic damage, such as the invasive emerald ash borer. Some species are attracted to recently burned forests to lay their eggs. They can sense pine wood smoke from up to 50 miles away and can see infrared light, helping them to zero in as they get closer to a forest fire.

Ten species of flatheaded borers of the family Buprestidae feed on spruce and fir, but hemlock is their preferred food source. As with roundheaded borers, most feeding occurs in dying or dead trees, or close to injuries on living trees. Damage becomes abundant only where a continuing supply of breeding material is available. The life history of these borers is similar to that of the roundheaded borers, but some exceedingly long life cycles have been reported under adverse conditions. Full-grown larvae, up to 25 mm long, are characteristically flattened, the anterior part of the body being much broader than the rest. The bronzed adults are usually seen only where suitable material occurs in sunny locations.

Systematics

Jewel beetle classification is not yet robustly established, although five or six main lineages apparently exist, which may be considered subfamilies, possibly with one or two being raised to families in their own right. Some other systems define up to 14 subfamilies.

The earliest unambiguous members of the family are known from the Middle Jurassic, around 160 million years ago, earlier claimed records from the Triassic based on isolated elytra are not definitive.

Subfamilies and selected genera

The commonly accepted subfamilies, with some representative genera, are:

<!-- list species which have articles here when the genus article does not yet exist. Species without articles can be listed too, but should be outcommented to prevent too many redlinks -->

Agrilinae &ndash; cosmopolitan, with most taxa occurring in the Northern Hemisphere

  • Aaaaba <small>Bellamy, 2013</small>
  • Agrilus <small>Curtis, 1825</small> <!-- Zootaxa1830:1. -->
  • Anodontodora <small>Obenberger, 1931</small><!-- Zootaxa1848:1. -->
  • Asymades <small>Kerremans, 1893</small><!-- Zootaxa1848:1. -->
  • Brachys <small>Dejean, 1833</small> <!-- Zootaxa1830:1. -->
  • Chalcophlocteis <small>Obenberger, 1924</small><!-- Zootaxa1848:1. -->
  • Discoderoides <small>Théry, 1936</small><!-- Zootaxa1848:1. -->
  • Entomogaster <small>Saunders, 1871</small><!-- Zootaxa1817:65. -->
  • Ethiopoeus <small>Bellamy, 2008</small><!-- Zootaxa1848:1. -->
  • Madecorformica <small>Bellamy, 2008</small><!-- Zootaxa1817:65. -->
  • Meliboeus <small>Deyrolle, 1864</small> <!-- Zootaxa1848:1. -->
  • Pachyschelus <small>Solier, 1833</small>
  • Paracylindromorphus <small>Thery, 1930</small> <!-- Zootaxa1791:68. -->
  • Paradorella <small>Obenberger, 1923</small><!-- Zootaxa1848:1. -->
  • Pseudokerremansia <small>Bellamy & Holm, 1985</small> <!-- Zootaxa1848:1. -->
  • Strandietta <small>Obenberger, 1931</small><!-- Zootaxa1848:1. -->
  • †Burmagrilus <small>Jiang et al. 2021</small> Burmese amber, Myanmar, Cenomanian

Buprestinae &ndash; cosmopolitan

  • Agrilozodes <small>Thery, 1927</small>
  • Anthaxia <small>Eschscholtz, 1829</small> <!-- Zootaxa1816:44. -->
  • Bubastoides<!-- Zootaxa1751:55. -->
  • Buprestis
  • Calodema &ndash; found only in Australia and New Guinea; usually in rain forests
  • Castiarina &ndash; about 500 species, found only in Australia and New Guinea, previously considered a subgenus of Stigmodera
  • Chrysobothris<!-- Zootaxa1830:1. -->
  • Cobosella
  • Colobogaster
  • Conognatha
  • Eurythyrea
  • Hiperantha
  • Metaxymorpha &ndash; found only in Australia, New Guinea, and Indonesia; usually in rain forests
  • Stigmodera &ndash; 7 species remain here
  • Temognatha &ndash; About 83-85 species, found only in Australia and New Guinea, previously considered a subgenus of Stigmodera

<!-- ** Temognatha alternata -->

Chrysochroinae

  • Capnodis<!-- ZoolMedLeiden82:489. -->
  • Chalcophora
  • Chrysochroa
  • Chrysodema <small>Laporte & Gory, 1835</small> (= Cyalithoides<!-- Fisher, 1922 -->)<!-- Zootaxa1811:34. -->
  • Euchroma
  • Halecia
  • Lampetis <small>Dejean, 1833</small> &ndash; sometimes included in the tribe Psilopterini, but actually not very close to Psiloptera (tentatively placed here)<!-- Zootaxa1733:68. -->
  • Lampropepla

<!-- ** Lampropepla rotschildi -->

  • Perotis
  • Psiloptera (tentatively placed here)

Galbellinae

  • Galbella

Julodinae

  • Aaata
  • Amblysterna
  • Julodella<!-- Zootaxa1751:46. -->
  • Julodis

<!-- ** Julodis ehrenbergii -->

  • Neojulodis
  • Sternocera

Polycestinae

  • Acmaeodera<!-- Zootaxa1830:1. -->

<gallery>

File:Agrilus biguttatus bl.JPG|Oak splendour beetle (Agrilus biguttatus, Agrilinae)

File:Eurythyrea austriaca up2.jpg|Eurythyrea austriaca (Buprestinae)

File:Temognatha alternata Jewel Beetle Cooktown.jpg|Temognatha alternata, a Buprestinae 2.6cm long from Cooktown, Australia

File:Capnodis cariosa bl.JPG|Capnodis cariosa (Chrysochroinae)

File:Julodis ehrenbergii bl.jpg|Julodis ehrenbergii specimen from Greece (Julodinae)

File:Acmaeodera.jpg|Acmaeodera sp. (Polycestinae)

File:Jewel Beetle.JPG|Unidentified species from Pune (India)

File:Jewel beetle.jpg|Unidentified species from Swifts Creek (Victoria, Australia)

File:Dicerca obscura.jpg|Dicerca obscura (subfamilia Chrysochroinae), North America

File:Buprestidae pon vandu.jpg|Sternocera sp., Tamil Nadu

File:Jewel beetle (Chrysochroa fulminans), Mindanao, Philippines 08.jpg|Chrysochroa fulminans from Mindanao, Philippines

File:Ovalisia (Scintillatrix) rutilans bl1.JPG|Lamprodila rutilans

File:Lamprodila festiva natur1.jpg|Lamprodila festiva in Spain

File:Prachtkäfer aus der Grube Messel.JPG|Fossil jewel beetle from the Eocene, found in the Messel Pit (Germany)

File:Kerremans.Monographie.des.Buprestides.06.jpg|Buprestinae (center right and lower left), Julodinae (center) and Polycestinae (others) from Charles Kerremans' Monographie des Buprestides

File:Boite Buprestidae Asie sud est GLAM muséum Lille 2016.JPG|Collection of Buprestidae from Southeast Asia in Musée d'Histoire Naturelle de Lille

</gallery>

See also

  • Campsosternus

References

Further reading

  • (2002): Buprestidae. In: : American Beetles (Volume 2). CRC Press.
  • Akiyama, K. and S. Ohmomo. 2000. The Buprestid Beetles of the World. Iconographic Series of Insects 4. . A 341-page work with 120 colour plates.
  • Williams, G., Mitchell, K. and Sundholm, A. M. 2024. Australian Jewel Beetles: An Introduction to the Buprestidae CSIRO Publishing
  • Štrunc V. (2022): Jewel Beetles of the World, Illustrated guide to the Superfamily Buprestoidea, 504 species and subspecies in 111 genera
  • Jewel beetle site, with extensive lists of species and many photos
  • Flickr Images
  • ZinRus Impressive photos.
  • Jewel beetles depicted on postage stamps
  • Jewel beetles can hear fires, short summary of a JEB-Paper
  • Jewel Beetle High Resolution Photography
  • The World of Jewel Beetles (Buprestidae Home Page)
  • Jewel beetles of Prague, with pictures
  • Bibliography
  • Taiwanese Site Images Binomial Names
  • Images of types at NHM(London)
  • Hampshire Museum - Beetles in jewelry