Trichochrysea hirta

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Trichochrysea hirta
Trichochrysea hirta imported from iNaturalist photo 214308639 on 14 September 2023.jpg
Trichochrysea hirta, Singapore
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Coleoptera
Infraorder: Cucujiformia
Family: Chrysomelidae
Subfamily: Eumolpinae
Tribe: Bromiini
Genus: Trichochrysea
Species:
T. hirta
Binomial name
Trichochrysea hirta
(Fabricius, 1801)
Synonyms [1] [2] [3]
sensu stricto
viridis
  • Heteraspis viridis Jacoby, 1892

Trichochrysea hirta is a species of leaf beetle found in Indonesia and Peninsular Malaysia in Southeast Asia. It has a metallic blue or green body covered with white hair, after which the species gets its scientific name: the species epithet, hirta, is derived from the Latin hirtus, meaning "hairy". [4]

Contents

Description

The adult of Trichochrysea hirta has a metallic blue or green body, with dense white pubescence. Its head is coarsely punctured. The basal four or five segments of the antennae are rufo-piceous beneath, the second and third sometimes entirely so, the basal segment cupreo-aureus. [5] [6] It measures 5.8–10.0 mm in length. [1]

Taxonomy

The species was first described from Sumatra as Eumolpus hirtus by Johan Christian Fabricius in his 1801 Systema eleutheratorum. [7] The species is currently a member of the genus Trichochrysea in the subfamily Eumolpinae.

Two subspecies of Trichochrysea hirta are recognised in Volume 6 of the Catalogue of Palaearctic Coleoptera: [2]

In 1987, two different subspecies of Trichochrysea hirta were recognised: T. h. hirta and T. h. nitidissima, with T. h. viridis as a synonym of the former. These differed mainly in the colour of the upper side. In 2007, T. hirta was instead divided into two species, based on differences in the shape of the aedeagus: specimens from Indonesia and Peninsular Malaysia (which have an aedeagus with an acute triangular apex) were considered true T. hirta, while those from mainland Asia (which have a broad aedeagus with truncated apex, with a small central tip) were now considered a separate species with the name Trichochrysea nitidissima . [1] The taxonomic position of the subspecies T. h. viridis is not clear, as its aedeagus was not studied: it is sometimes instead recognised as a separate species (Trichochrysea viridis), [8] but it is possibly a synonym of T. hirta. [1]

Distribution

Trichochrysea hirta is recorded from Malacca, Sumatra, Bali, Lombok, Java, Nias, and Sulawesi. [9]

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References

  1. 1 2 3 4 Medvedev, L. N. (2007). "Taxonomical position of Trichochrysea hirta Fabricius, 1801 (Coleoptera: Chrysomelidae: Eumolpinae)" (PDF). Genus. 18 (4): 575–578.
  2. 1 2 Moseyko, A. G.; Sprecher-Uebersax, E. (2010). "Eumolpinae". In Löbl, I.; Smetana, A. (eds.). Catalogue of Palaearctic Coleoptera. Volume 6. Chrysomeloidea. Stenstrup, Denmark: Apollo Books. pp. 619–643. ISBN   978-87-88757-84-2.
  3. ↑ Medvedev, L. N. (2001). "Jacoby's types of Chrysomelidae (Coleoptera) from Burma in the Museo Civico di Storia Naturale "Giacomo Doria", Genoa. Part 1". Annali del Museo Civico di Storia Naturale "Giacomo Doria". 93: 167–184.
  4. ↑ Lewis, Charlton T.; Short, Charles (1879). "hirtus". A Latin Dictionary. Perseus Digital Library.
  5. ↑ Baly, J. S. (1867). "Phytophaga Malayana; a revision of the phytophagous beetles of the Malay Archipelago, with descriptions of the new species collected by Mr. A. R. Wallace". Transactions of the Entomological Society of London . 3. 4: 1–300. doi:10.1111/j.1365-2311.1866.tb01857.x.
  6. ↑ Jacoby, M. (1908). Bingham, C. T. (ed.). Coleoptera. Chrysomelidae. Vol. 1. The Fauna of British India, Including Ceylon and Burma. London: Taylor & Francis. p. 390.
  7. ↑ Fabricius, J.C. (1801). Systema eleutheratorum secundum ordines, genera, species: adiectis synonimis, locis, observationibus, descriptionibus. Tomus I. Kiliae: Impensis bibliopoli academici novi. p. 420.
  8. ↑ Tan, J.; Wang, S.; Zhou, H. (2005). 中国动物志 昆虫纲 (第四十卷) 鞘翅目 肖叶甲科 肖叶甲亚科 [Fauna Sinica. Insect Vol 40. Coleoptera. Eumolpidae. Eumolpinae](PDF) (in Chinese). Beijing: Science Press. ISBN   7-03-014376-0.
  9. ↑ Medvedev, L. N.; Takizawa, H. (2011). "Leaf beetles of the subfamily Eumolpinae (Coleoptera: Chrysomelidae) from Bali, Indonesia". Serangga. 16 (1): 7–27.
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