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Mecodema
''Mecodema'' is a genus of large flightless ground beetle (Carabidae) endemic to New Zealand. The genus is very diverse in comparison to the other three New Zealand genera ('' Diglymma'', '' Oregus'', '' Orthoglymma'') within the subtribe Nothobroscina (tribe Broscini). ''Mecodema'' is geographically widespread across both the North and South Islands, as well as numerous offshore islands, including the Three Kings Is., Poor Knights Is., Aotea ( Great Barrier Is.) and Hauturu (Little Barrier Is.), Kapiti Is., Stephens Is., Stewart Is., Chatham Is., Snares Is. Genus description Head, frons and vertex often rugose and / or punctate, microsculpture or macrosculpture absent in some species groups (e.g., ''curvidens'' species); eyes prominent, almost hemispherical; a single supraorbital puncture on each side, bearing more than one setae; setose punctures of vertex absent; mandibles large, uniformly narrow to the pointed apex, sharply curved in the apical third, mandibles ...
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Mecodema Antarcticum
''Mecodema antarcticum'' is a carnivorous carabid beetle that burrows in sand above the high tide mark on New Zealand sandy beaches. First described by Francis de Laporte de Castelnau in 1867 as ''Brullea antarctica'', it has since been reassigned to ''Mecodema.'' Description ''Mecodema antarcticum'' is large (up to 25 mm), glabrous reddish brown to black with a distinct "waist" or narrowing between thorax and abdomen (peduncle), like all ''Mecodema''. Indeed, recent DNA analysis places it within that genus, a sister group to ''Mecodema curvidens''; its distinctive differences in body shape may be adaptations to burrowing in sand. This species legs are well-adapted for digging in sand with greatly expanded coxa, femur and tibia: all tibia are greatly expanded at their distal ends, and the middle and hind pairs are also strongly curved. Other features consistent with dwelling in and on sand are the short antennae, large curved mandibles, and a rather boxy shape in contr ...
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Mecodema Aoteanoho
''Mecodema aoteanoho'' is a medium-sized (19–24 mm length, 5.5–7 mm width) ground beetle, the only such beetle endemic to Great Barrier Island (Aotea), Hauraki Gulf, Auckland, New Zealand. ''Mecodema aoteanoho'' is a sister species to '' M. haunoho'' ( Little Barrier Island) and is closely related to the Coromandel (mainland) species, '' M. atrox'', all of which are species within the monophyletic ''curvidens'' group (4–6 setae along each side of the prothoracic carina). There are a number of other characters that distinguish ''M. aoteanoho'' from all other North Island ''Mecodema ''Mecodema'' is a genus of large flightless ground beetle (Carabidae) endemic to New Zealand. The genus is very diverse in comparison to the other three New Zealand genera ('' Diglymma'', '' Oregus'', '' Orthoglymma'') within the subtribe Noth ...'', especially the pattern of the striations on the elytra. For a detailed description of ''M. aoteanoho'' see Seldon & Buckley 2019. Descr ...
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Mecodema Atrox
''Mecodema atrox'' is a medium-sized (17–24 mm length, 6–8 mm width) ground beetle species that is closely related to ''Mecodema curvidens'' (a very widespread species throughout the Bay of Plenty and Central Plateau). ''Mecodema atrox'' is relatively rare in comparison due to its preferred habitat, the coastal broadleaf forests of the Coromandel Peninsula, a forest type that is in decline. The body of ''Mecodema atrox'' is black and the legs are dark reddish-brown. They can be distinguished from other ''Mecodema'' species by a number of characters, including the pattern of asetose punctures along the elytral striae. This species is part of the ''curvidens'' group that has a geographical distribution from Northland (including the Three Kings Island) to Banks Peninsula, South Island. Species of the ''curvidens'' group predominantly follow an eastern distribution including species on the offshore islands (e.g., Poor Knights Island, Hauturu (Little Barrier Island) a ...
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Mecodema Atuanui
''Mecodema atuanui'' was described from a single male specimen collected in pitfall traps on Mount Auckland (Atuanui), Kaipara Region. It is a medium-length ground beetle that is related to '' Mecodema spiniferum'', which is the only large-lengthed ground beetle species found in the Waitākere Ranges, Auckland, rather than the more geographically close species ('' M. dunnorum'') to the east in Puhoi. Diagnosis Distinguished from other North Island ''Mecodema ''Mecodema'' is a genus of large flightless ground beetle (Carabidae) endemic to New Zealand. The genus is very diverse in comparison to the other three New Zealand genera ('' Diglymma'', '' Oregus'', '' Orthoglymma'') within the subtribe Noth ...'' species by having: # a lobate labrum; # vertexal groove defined by punctures along the entire length; # elytral intervals 3 and 5 significantly broadened than otherintervals; # the distinctively narrow width of the apical portion of the penis lobe. Description L ...
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Mecodema Argentum
''Mecodema argentum'' is a large-bodied (29–32 mm length, 8.5–10 mm width) ground beetle found in the northern region of the Coromandel Range, New Zealand and relatively abundant in the hills above Coromandel town. ''Mecodema argentum'' is more closely related to ''Mecodema'' species found in Northland, than other species found in the Coromandel Ranges. The entire body is black, but the legs and coxae may be reddish brown, plus ''M. argentum'' can be distinguished from other North Island ''Mecodema ''Mecodema'' is a genus of large flightless ground beetle (Carabidae) endemic to New Zealand. The genus is very diverse in comparison to the other three New Zealand genera ('' Diglymma'', '' Oregus'', '' Orthoglymma'') within the subtribe Noth ...'' by the form of the apical portion of the penis lobe. For a full description see Seldon & Buckley 2019. Natural History Further research is required. References argentum Endemic fauna of New Zealand Beetles of New ...
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Mecodema Aberrans
''Mecodema aberrans'' is a medium-sized (14.6–19.5 mm length, 5.3–6.5 mm width) ground beetle endemic to the South Island, New Zealand. This species is within the ''curvidens'' group and is one of three species that is a braided-river ecotype. It occurs in Otago and Canterbury. Description The body colour of the species varies from black (dorsal) to brown (ventral), legs may be a red-brown. To reduce the abrasion of the ventral abdomen, ventrites 3–5 are covered in a large number of setae, which is one of the distinguishing features of this species. To further identify ''M. aberrans'' from other ''Mecodema ''Mecodema'' is a genus of large flightless ground beetle (Carabidae) endemic to New Zealand. The genus is very diverse in comparison to the other three New Zealand genera ('' Diglymma'', '' Oregus'', '' Orthoglymma'') within the subtribe Noth ...'' species there is a difference in the size of the asetose punctures along elytral striae 9 in comparison to striae 1. ...
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Mecodema Allani
''Mecodema allani'' is a ground beetle of the family Carabidae, endemic to the South Island, New Zealand. It is one of two species within the ''laterale'' group, which are large-bodied species with a distinctively broad lateral carina along the elytra that is reflexed (curved upward). References External links * * iNaturalist World Checklist Beetles of New Zealand allani Allani, also known under the Akkadian name Allatu (or Allatum) was the Hurrian goddess of the underworld, incorporated into Hittite and Mesopotamian pantheons as well. Name and epithets The name Allani is derived from a Hurrian word meaning " ... Endemic fauna of New Zealand Beetles described in 1945 Endemic insects of New Zealand {{Broscinae-stub ...
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Nothobroscina
Nothobroscina Roig-Juñent 2000 is one five subtribes within the ground beetle tribe Broscini. The subtribe consists of ten genera from the Gondwanan countries: Australia, New Caledonia, New Zealand and southern South America. All of the genera are endemic to their type country, i.e., none of the genera are shared across any of the Gondwanan countries. Genera * '' Chylnus'' * '' Diglymma'' * '' Eurylychnus'' * ''Mecodema ''Mecodema'' is a genus of large flightless ground beetle (Carabidae) endemic to New Zealand. The genus is very diverse in comparison to the other three New Zealand genera ('' Diglymma'', '' Oregus'', '' Orthoglymma'') within the subtribe Noth ...'' * '' Monteremita'' * '' Nothobroscus'' * '' Oregus'' * '' Orthoglymma'' * '' Percolestus'' * '' Percosoma'' References Liebherr, J. K., Marris, J. W., Emberson, R. M., Syrett, P., & Roig‐Juñent, S. (2011). ''Orthoglymma wangapeka'' gen. n., sp. n.(Coleoptera: Carabidae: Broscini): a newly discovered r ...
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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 area of . Its coastline is deeply creased by Paterson Inlet (east), Port Pegasus (south), and Mason Bay (west). The island is generally hilly (rising to at Mount Anglem) and densely forested. Flightless birds, including penguins, thrive because there are few introduced predators. Almost all the island is owned by the New Zealand government and over 80 per cent of the island is set aside as the Rakiura National Park. Stewart Island's economy depends on fishing and summer tourism. Its permanent population was recorded at 408 people in the 2018 census, most of whom live in the settlement of Oban on the eastern side of the island. Ferries connect the settlement to Bluff in the South Island. Stewart Island/Rakiura is part of the Southland D ...
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