''Hadramphus'' (synonym: ''Karocolens''Craw, RC (1999): ''Molytini (Insecta: Coleoptera: Curculionidae: Molytinae). Flightless Molytine Weevils''. Fauna of New Zealand. No. 39.), commonly known as knobbled weevils, is a genus of flightless molytine weevils from the family

Curculionidae The Curculionidae are a family of weevils, commonly called snout beetles or true weevils. They are one of the largest animal families, with 6,800 genera and 83,000 species described worldwide. They are the sister group to the family Brentidae. T ...

. It is endemic to New Zealand and consists of four species.Laura M. Young; John W. M. Marris; Stephen M. Pawson: "Back from extinction: rediscovery of the Canterbury knobbled weevil Hadramphus tuberculatus (Pascoe 1877) (Coleoptera: Curculionidae), with a review of its historical distribution" In: ''New Zealand Journal of Zoology'', 2008, Vol. 35: 323-330. The Royal Society of New Zealand. The type species '' Hadramphus spinipennis'' was designated by

Thomas Broun Thomas Broun (15 July 1838 – 24 August 1919) was a New Zealand soldier, farmer, teacher and entomologist. He was born in Edinburgh, Midlothian, Scotland on 15 July 1838. BibliographyDescriptions of new genera and species of coleoptera ''Bul ...

in 1911. '' Hadramphus pittospori'' was described by Guillermo Kuschel within the new genus ''Karocolens'' in 1987 but placed by Robin Craw into the genus ''Hadramphus'' in 1999. ''

Hadramphus tuberculatus ''Hadramphus tuberculatus'' (known as the Canterbury knobbled weevil, Spaniard weevil or Banks Peninsula speargrass weevil) is a rare weevil endemic to Canterbury in the South Island of New Zealand. It was thought to be extinct in 1922 but was ...

'' was described by

Francis Polkinghorne Pascoe Francis Polkinghorne Pascoe (1 September 1813 – 20 June 1893) was an English entomologist mainly interested in beetles. Biography He was born in Penzance, Cornwall and trained at St. Bartholomew's Hospital, London. Appointed surgeon in the Nav ...

as ''Lyperobius tuberculatus'' in 1877F. P. Pascoe (1877): "Descriptions of new genera and species of New Zealand Coleoptera (Part IV)". ''Annals and Magazine of Natural History'' (4)19: 140–147 but transferred by Kuschel into the genus ''Hadramphus'' in 1971.Kuschel, G. (1971) "Entomology of the Aucklands and other islands south of New Zealand". ''Pacific Insects Monograph'' 27: 225–259. The fourth species '' Hadramphus stilbocarpae'' was described by Kuschel in 1971. All four species are relatively large with a length ranging from 11.7 to 23 mm. They are predominantly dark brown and characterized by triangular or rounded tubercles on their flanks and on their upperparts. ''H. pittospori'' is confined to

Poor Knights Islands The Poor Knights Islands (Māori: ''Tawhiti Rahi)'' are a group of islands off the east coast of the Northland Region of the North Island of New Zealand. They lie to the northeast of Whangarei, and offshore halfway between Bream Head an ...

, ''H. spinipennis'' is endemic to the

Chatham Islands The Chatham Islands ( ) (Moriori: ''Rēkohu'', 'Misty Sun'; mi, Wharekauri) are an archipelago in the Pacific Ocean about east of New Zealand's South Island. They are administered as part of New Zealand. The archipelago consists of about te ...

, ''H. stilbocarpae'' lives on Breaksea Island,

Fiordland Fiordland is a geographical region of New Zealand in the south-western corner of the South Island, comprising the westernmost third of Southland. Most of Fiordland is dominated by the steep sides of the snow-capped Southern Alps, deep lakes, ...

, Resolution Island and

Puysegur Point Puysegur Point is a headland located in the far southwest of the South Island of New Zealand. It lies within Fiordland National Park on the southern head of Preservation Inlet and is west-northwest of Invercargill. The name 'Puysegur' was be ...

, islands around

Stewart Island/Rakiura Stewart Island ( mi, Rakiura, ' glowing skies', officially Stewart Island / Rakiura) is New Zealand's third-largest island, located south of the South Island, across the Foveaux Strait. It is a roughly triangular island with a total land ar ...

(Bird Island and

Big South Cape Island Big South Cape Island or Taukihepa is an offshore island of New Zealand to the west of the southern tip of Stewart Island / Rakiura. The island has no permanent inhabitants but muttonbirders visit the island to catch the sooty shearwater, known i ...

) and the sub-Antarctic

Snares Islands The Snares Islands / Tini Heke, known colloquially as The Snares, is a group of uninhabited islands lying about 200 km south of New Zealand's South Island and to the south-southwest of Stewart Island / Rakiura. The Snares consist of the m ...

. The rarest of them is ''Hadramphus tuberculatus''. It is endemic to the Burkes Pass Scenic Reserve in the

Canterbury Plains The Canterbury Plains () are an area in New Zealand centred in the Mid Canterbury, to the south of the city of Christchurch in the Canterbury region. Their northern extremes are at the foot of the Hundalee Hills in the Hurunui District, and in t ...

and was not seen between 1922 and 2004.

References

{{Taxonbar, from=Q1535699 Beetles of New Zealand Molytinae