''Maoricrambus'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

moth Moths are a paraphyletic group of insects that includes all members of the order Lepidoptera that are not butterflies, with moths making up the vast majority of the order. There are thought to be approximately 160,000 species of moth, many of w ...

s of the family

Crambidae The Crambidae are the grass moth family of lepidopterans. They are variable in appearance, the nominal subfamily Crambinae (grass moths) taking up closely folded postures on grass stems where they are inconspicuous, while other subfamilies includ ...

. It contains only one species, ''Maoricrambus oncobolus'', which is

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...

New Zealand New Zealand ( mi, Aotearoa ) is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and over 700 smaller islands. It is the sixth-largest island count ...

. This species is classified as Nationally Endangered by the

Department of Conservation An environmental ministry is a national or subnational government agency politically responsible for the environment and/or natural resources. Various other names are commonly used to identify such agencies, such as Ministry of the Environment ...

Taxonomy

''M. oncobolus'' was named by

Edward Meyrick Edward Meyrick (25 November 1854, in Ramsbury – 31 March 1938, at Thornhanger, Marlborough) was an English schoolmaster and amateur entomologist. He was an expert on microlepidoptera and some consider him one of the founders of modern micr ...

in 1885 and described using a specimen collected at Castle Hill Basin, now part of the Kura Tāwhiti Conservation Area near

Arthur's Pass Arthur's Pass, previously called Camping Flat then Bealey Flats, and for some time officially Arthurs Pass, is a township in the Southern Alps of the South Island of New Zealand, located in the Selwyn district. It is a popular base for explorin ...

. In 1895 when listing the species

George Hampson Sir George Francis Hampson, 10th Baronet (14 January 1860 – 15 October 1936) was an English entomologist. Hampson studied at Charterhouse School and Exeter College, Oxford. He travelled to India to become a tea-planter in the Nilgiri Hills o ...

misspelt it resulting in the

synonym A synonym is a word, morpheme, or phrase that means exactly or nearly the same as another word, morpheme, or phrase in a given language. For example, in the English language, the words ''begin'', ''start'', ''commence'', and ''initiate'' are all ...

for the species of ''Crambus oncolobus''. In 1975 D. E. Gaskin erected the

monotypic In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispec ...

genus ''Maoricrambus'' for ''Crambus oncolobus''. The

lectotype In biology, a type is a particular specimen (or in some cases a group of specimens) of an organism to which the scientific name of that organism is formally attached. In other words, a type is an example that serves to anchor or centralizes the ...

and paralectotype specimens are held at the Natural History Museum, London.

Description

Meyrick described the species as follows: ''M. oncobolus'' is very similar in appearance to '' Orocrambus harpophorus''. However ''M. oncobolus'' does not have the subterminal spotting of the forewings that can be found on the forewings of ''O. harpophorus''. Also the two species are dissimilar in both the male and female genital structure. Adults are on wing from December to February.

Distribution

''M. oncobolus'' is endemic to New Zealand. This species is restricted to central

Canterbury Canterbury (, ) is a City status in the United Kingdom, cathedral city and UNESCO World Heritage Site, situated in the heart of the City of Canterbury local government district of Kent, England. It lies on the River Stour, Kent, River Stour. ...

and

Southland Southland may refer to: Places Canada * Dunbar–Southlands, Vancouver, British Columbia New Zealand * Southland Region, a region of New Zealand * Southland County, a former New Zealand county * Southland District, part of the wider Southland Reg ...

. Specimens of this species have been collected at Porter River among the boulders and lichens near the edge of the river and at the Sandy Point Domain near Invercargill.

Habitat

''M. oncobolus'' is associated with riverside grasslands in Southland and braided riverbeds central Canterbury.

Host plants

The host plants of this species are unknown.

Conservation status

''M. oncobolus'' is regarded as being "Nationally Endangered" under the

New Zealand Threat Classification System The New Zealand Threat Classification System is used by the Department of Conservation to assess conservation priorities of species in New Zealand. The system was developed because the IUCN Red List, a similar conservation status system, had some ...

References

Crambinae Monotypic moth genera Moths of New Zealand Endemic fauna of New Zealand Crambidae genera Endangered biota of New Zealand Endemic moths of New Zealand {{Crambinae-stub