Sternocera aequisignata

Sternocera aequisignata[1][2] is a species of jewel beetles belonging to the subfamily Julodinae. Its bright metallic green elytra are frequently used in jewellery making.

Sternocera aequisignata
Sternocera aequisignata from Myanmar
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Coleoptera
Family: Buprestidae
Subfamily: Julodinae
Genus: Sternocera
Species:
S. aequisignata
Binomial name
Sternocera aequisignata

Description

Sternocera aequisignata can reach a length of about 30–50 millimetres (1.2–2.0 in). Elytra and pronotum have a beautiful metallic emerald iridescence. Pronotum is densely punctured.

Distribution

This species occurs across southern Asia,[2] including India, Myanmar, Thailand to southern Vietnam.[3]

Lifecyle

The female lays eggs singly in soil at the base of the host plants. Each female is capable of laying 5–12 eggs, which take 2 months to hatch.[4] The hatched larva has five instar stages. Stages 1 to 4 remain in the soil for 3–4 months where they feed upon the roots of the adult host plants.[4] The 5th instar can be found above ground, until it returns underground again to pupate. Adult beetles have a short lifespan of 1–3 weeks, though the complete life cycle takes up to two years.[5]

Relationship to humans

As food

S. aequisignata and the similar S. ruficornis are both consumed by humans as a source of food in northern Thailand, Laos, and China.[6] This is one of the major sources of their decline in that area.[5]

In jewellery making

The bright metallic green elytra of S. aequisignata are collected and used as a material in jewellery making.[5][6]

References
  1. Saunders E (1866) Catalogue of Buprestidae collected by the late M. Mouhot, in Siam &c., with descriptions of new species. Transactions of the Royal Entomological Society of London (3) 5(1865-1867): 297-322.
  2. "Sternocera aequisignata Saunders, 1866". ITIS. 2017. Retrieved 2017-02-10.
  3. GBIF: Sternocera aequisignata Saunders, 1866
  4. Hawkeswood, T.J.; Sommung, B. (2016). "Review of the biology of Sternocera aequisignata Saunders, 1866 (Coleoptera: Buprestidae) in Thailand". Calodema. 414: 1–6.
  5. Pinkaew, Nantasak (2001). "Some Biological Aspects of Sternocera ruficornis Saunder, 1866 in Dry Dipterocarp Forest at Sakaerat Environmental Research Station" (PDF). The Kasetsart Journal (Natural Sciences). 35 (2): 132–138. Archived from the original (PDF) on 2006-07-06.
  6. Victoria Z. Rivers (2011). "Beetles in Textiles". insects.org. Retrieved 2017-02-10.
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