Hoangus
| Hoangus | |
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| Genus: | Hoangus Ukrainsky, 2007
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| Species: | H. venustus
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| Binomial name | |
| Hoangus venustus | |
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Hoangus venustus, commonly known as the flax ladybird, is a species of ladybird beetle that is endemic to New Zealand. It is widespread in the North Island and in the northern half of the South Island. It can be found on New Zealand flax (Phormium), reportedly eating the mealybugs that live there. Previously known as Cassiculus venustus and Cranophorus venustus, the valid name of the species is now Hoangus venustus. It is the only species in the genus Hoangus.
Taxonomy
[edit]This species was first described as Cranophorus venustus in 1875 by Francis Polkinghorne Pascoe from a single specimen collected in the Waikato region by Frederick Hutton.[2][3] The holotype is stored in the Natural History Museum of London.[4] In 1880, the description was repeated by Thomas Broun in his landmark "Manual of the New Zealand Coleoptera" book, in which he noted the species was also found in Auckland and Tairua.[3] In 1895, the species was moved to the Cassiculus genus.[5] In 2006, it underwent another revision where it was moved into the Hoangus genus, of which it is the only species.[6] It was most recently in 2019, in which it was given a comprehensive redescription.[4]
Description
[edit]
As adults, the beetles are 4.27-4.38mm (0.168-0.172 in) in length. They are coloured black and orange. The head is orange on each side with black running down the middle, while its elytra or wing cases (which cover the back) are orange around the edge with black covering much of the area. It has four orange dots on this black area, two on each elytron.[4]
Distribution and habitat
[edit]Hoangus venustus is endemic to New Zealand, where it is widespread throughout the North Island. It is also known from the northern half of the South Island. It is typically associated with New Zealand Flax (Phormium tenax).[4]
Diet
[edit]Because of their association with flax, they are presumed to be active predators that feed on mealybugs that specialised on flax.[4]
See also
[edit]- Coccinella leonina, another native ladybird
References
[edit]
- ^ "Hoangus venustus (Pascoe, 1875)". New Zealand Organisms Register. Landcare Research. Retrieved 30 April 2016.
- ^ Pascoe, Francis P. (1875). "XXVI.—Descriptions of new genera and species of New-Zealand coleoptera.—Part I". Annals And Magazine of Natural History. 16 (93): 222. doi:10.1080/00222937508681155.
- ^ a b Broun, Thomas. (1880). Manual of the New Zealand Coleoptera. Wellington: Printed at the Office of James Hughes, Lambton Quay. pp. 650–651. doi:10.5962/t.173101.
- ^ a b c d e Szawaryn, Karol; Leschen, Richard A. B. (2019-03-01). "Redescription and notes on the New Zealand ladybird species Hoangus venustus (Pascoe, 1875) (Coleoptera: Coccinellidae)". Journal of Asia-Pacific Entomology. 22 (1): 226–232. doi:10.1016/j.aspen.2018.12.010. ISSN 1226-8615.
- ^ Weise, J (1895). "Neue coccinelliden, sowie bermerkungen zu bekannten arten". Annales de la Societe Entomologique de Belgique. 39: 120–146.
- ^ Ukrainsky, A. S. (2006). "Five new replacement ladybird (Coleoptera: Coccinellidae) generic names" (PDF). Russian Entomological Journal. 15 (4): 399–400. Retrieved 30 April 2016.