Geodorcus Alsobius
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Geodorcus Alsobius
''Geodorcus alsobius'', or Moehau stag beetle, is a large flightless species of stag beetle in the family Lucanidae. It is found only on Mt Moehau, the highest mountain in the Moehau Range on the Coromandel Peninsula in New Zealand. Description Moehau stag beetles range in length (including mandibles) from 21.0 to 27.0 mm (males) and from 21.0 to 23.7 mm (females). They demonstrate sexual dimorphism. The exoskeleton ranges from dull to glossy. It is black in colour and is pitted throughout. Male specimens have an obvious depression on the head behind the large mandibles. The head is widest behind the eyes. Setae on the elytra are small. Male mandibles are large and curved with an obvious mid dorsal horizontal tooth Distribution ''Geodorcus alsobius'' has a very restricted range. This species is only found on Mt Moehau on the Coromandel Peninsula in New Zealand. Habitat Adult specimens of the Moehau stag beetle are found under wet rotten logs and rocks at altitudes ...
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Stag Beetle
Stag beetles are a family of about 1,200 species of beetles in the family Lucanidae, currently classified in four subfamilies.Smith, A.B.T. (2006). A review of the family-group names for the superfamily Scarabaeoidea (Coleoptera) with corrections to nomenclature and a current classification. The Coleopterists Bulletin 60:144–204. Some species grow to over , but most to about . Overview The English name is derived from the large and distinctive mandibles found on the males of most species, which resemble the antlers of stags. A well-known species in much of Europe is ''Lucanus cervus'', referred to in some European countries (including the United Kingdom) as ''the'' stag beetle; it is the largest terrestrial insect in Europe. Pliny the Elder noted that Nigidius called the beetle ''lucanus'' after the Italian region of Lucania where they were used as amulets. The scientific name of ''Lucanus cervus'' adds ''cervus'', deer. Male stag beetles are known for their oversize mandi ...
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Moehau Range
The Moehau Range is the northernmost range on the Coromandel Peninsula, extending from the settlement of Colville, New Zealand northwards to the tip of the peninsula. Mount Moehau is the highest point of the range, at 892m above sea level. Physical geography The Moehau Range is the central feature of the Colville Ecological District. Environment Waikato's local area planting guide describes the area as "long ridges and steep streams radiating out to the coast, steep and broken hillslopes, floodplains, harbours and estuaries." The Colville Ecological District takes in , 59% of which is in indigenous vegetation, and 8% of which is virgin forest. To the south the range is drained by Waikawau River. Geology Most of the range is made up of metamorphic, prehnite-pumpellyite Manaia Hill Group greywackeˌ sandstones and siltstones (Waipapa terrane) of Jurassic/Cretaceous age, formed about 150 million years ago. They have few fossils, but are interbedded with feldspar-lithic volcanic ...
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Coromandel Peninsula
The Coromandel Peninsula ( mi, Te Tara-O-Te-Ika-A-Māui) on the North Island of New Zealand extends north from the western end of the Bay of Plenty, forming a natural barrier protecting the Hauraki Gulf and the Firth of Thames in the west from the Pacific Ocean to the east. It is wide at its broadest point. Almost its entire population lives on the narrow coastal strips fronting the Hauraki Gulf and the Bay of Plenty. In clear weather the peninsula is clearly visible from Auckland, the country's biggest city, which lies on the far shore of the Hauraki Gulf, to the west. The peninsula is part of the Thames-Coromandel District of the Waikato region. Origin of the name The Māori name for the Coromandel comes from the Māori legend of Māui and the Fish, in which the demigod uses his hook to catch a great fish from the depths of te Moana-Nui-a-Kiwa (The Pacific Ocean). ''Te Tara-O-Te-Ika-A-Māui'' means 'The spine of Māui's fish'. The spine can be understood to be the C ...
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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 country by area, covering . New Zealand is about east of Australia across the Tasman Sea and south of the islands of New Caledonia, Fiji, and Tonga. The country's varied topography and sharp mountain peaks, including the Southern Alps, owe much to tectonic uplift and volcanic eruptions. New Zealand's capital city is Wellington, and its most populous city is Auckland. The islands of New Zealand were the last large habitable land to be settled by humans. Between about 1280 and 1350, Polynesians began to settle in the islands and then developed a distinctive Māori culture. In 1642, the Dutch explorer Abel Tasman became the first European to sight and record New Zealand. In 1840, representatives of the United Kingdom and Māori chiefs ...
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Sexual Dimorphism
Sexual dimorphism is the condition where the sexes of the same animal and/or plant species exhibit different morphological characteristics, particularly characteristics not directly involved in reproduction. The condition occurs in most animals and some plants. Differences may include secondary sex characteristics, size, weight, colour, markings, or behavioural or cognitive traits. These differences may be subtle or exaggerated and may be subjected to sexual selection and natural selection. The opposite of dimorphism is ''monomorphism'', which is when both biological sexes are phenotypically indistinguishable from each other. Overview Ornamentation and coloration Common and easily identified types of dimorphism consist of ornamentation and coloration, though not always apparent. A difference in coloration of sexes within a given species is called sexual dichromatism, which is commonly seen in many species of birds and reptiles. Sexual selection leads to the exaggerated dim ...
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Setae
In biology, setae (singular seta ; from the Latin word for "bristle") are any of a number of different bristle- or hair-like structures on living organisms. Animal setae Protostomes Annelid setae are stiff bristles present on the body. They help, for example, earthworms to attach to the surface and prevent backsliding during peristaltic motion. These hairs make it difficult to pull a worm straight from the ground. Setae in oligochaetes (a group including earthworms) are largely composed of chitin. They are classified according to the limb to which they are attached; for instance, notosetae are attached to notopodia; neurosetae to neuropodia. Crustaceans have mechano- and chemosensory setae. Setae are especially present on the mouthparts of crustaceans and can also be found on grooming limbs. In some cases, setae are modified into scale like structures. Setae on the legs of krill and other small crustaceans help them to gather phytoplankton. It captures them and allows ...
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Department Of Conservation (New Zealand)
The Department of Conservation (DOC; Māori: ''Te Papa Atawhai'') is the public service department of New Zealand charged with the conservation of New Zealand's natural and historical heritage. An advisory body, the New Zealand Conservation Authority (NZCA) is provided to advise DOC and its ministers. In addition there are 15 conservation boards for different areas around the country that provide for interaction between DOC and the public. Function Overview The department was formed on 1 April 1987, as one of several reforms of the public service, when the ''Conservation Act 1987'' was passed to integrate some functions of the Department of Lands and Survey, the Forest Service and the Wildlife Service. This act also set out the majority of the department's responsibilities and roles. As a consequence of Conservation Act all Crown land in New Zealand designated for conservation and protection became managed by the Department of Conservation. This is about 30% of New Z ...
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Beetles Of New Zealand
Beetles are insects that form the order Coleoptera (), in the superorder Endopterygota. Their front pair of wings are hardened into wing-cases, elytra, distinguishing them from most other insects. The Coleoptera, with about 400,000 described species, is the largest of all orders, constituting almost 40% of described insects and 25% of all known animal life-forms; new species are discovered frequently, with estimates suggesting that there are between 0.9 and 2.1 million total species. Found in almost every habitat except the sea and the polar regions, they interact with their ecosystems in several ways: beetles often feed on plants and fungi, break down animal and plant debris, and eat other invertebrates. Some species are serious agricultural pests, such as the Colorado potato beetle, while others such as Coccinellidae (ladybirds or ladybugs) eat aphids, scale insects, thrips, and other plant-sucking insects that damage crops. Beetles typically have a particularly hard exoske ...
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Endemic Fauna Of New Zealand
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 elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can be also be referred to as an ''endemism'' or in scientific literature as an ''endemite''. For example '' Cytisus aeolicus'' is an endemite of the Italian flora. '' Adzharia renschi'' was once believed to be an endemite of the Caucasus, but it was later discovered to be a non-indigenous species from South America belonging to a different genus. The extreme opposite of an endemic species is one with a cosmopolitan distribution, having a global or widespread range. A rare alternative term for a species that is endemic is "precinctive", which applies to s ...
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Lucaninae
The Lucaninae comprise the largest subfamily of the stag beetles (Lucanidae). Characteristics include partial to complete division of the eyes by a canthus, geniculate antennae, and distinctly separated coxae. The body is typically elongated and slightly flattened. Genera Some notable species are also listed: * '' Aegognathus'' * '' Aegus'' * '' Agnus'' * '' Allotopus'' * '' Amneidus'' * '' Andinolucanus'' * '' Aphanognathus'' * '' Apterocyclus'' * '' Apterodorcus'' Arrow, 1943 * '' Auxicerus'' * '' Bartolozziolucanus'' * '' Beneshius'' * '' Bomansius'' * '' Brasilucanus'' * '' Cacostomus'' ** '' C. squamosus'' * '' Calcodes'' * '' Cantharolethrus'' ** '' C. luxeri'' * '' Capreolucanus'' * ''Cardanus'' * '' Casignetus'' * '' Charagmophorus'' * '' Chewlucanus'' * '' Chiasognathus'' * '' Cladophyllus'' * '' Cladognathus'' * '' Colophon'' * '' Cyclommatus'' ** '' C. scutellaris'' * '' Dendezia'' * '' Diasomoides'' * '' Dinonigidius'' * '' Dorculus'' * '' Dorcus'' * '' Dynod ...
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Endangered Biota Of New Zealand
An endangered species is a species that is very likely to become extinct in the near future, either worldwide or in a particular political jurisdiction. Endangered species may be at risk due to factors such as habitat loss, poaching and invasive species. The International Union for Conservation of Nature (IUCN) Red List lists the global conservation status of many species, and various other agencies assess the status of species within particular areas. Many nations have laws that protect conservation-reliant species which, for example, forbid hunting, restrict land development, or create protected areas. Some endangered species are the target of extensive conservation efforts such as captive breeding and habitat restoration. Human activity is a significant cause in causing some species to become endangered. Conservation status The conservation status of a species indicates the likelihood that it will become extinct. Multiple factors are considered when assessing the st ...
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Beetles Described In 2007
Beetles are insects that form the order Coleoptera (), in the superorder Endopterygota. Their front pair of wings are hardened into wing-cases, elytra, distinguishing them from most other insects. The Coleoptera, with about 400,000 described species, is the largest of all orders, constituting almost 40% of described insects and 25% of all known animal life-forms; new species are discovered frequently, with estimates suggesting that there are between 0.9 and 2.1 million total species. Found in almost every habitat except the sea and the polar regions, they interact with their ecosystems in several ways: beetles often feed on plants and fungi, break down animal and plant debris, and eat other invertebrates. Some species are serious agricultural pests, such as the Colorado potato beetle, while others such as Coccinellidae (ladybirds or ladybugs) eat aphids, scale insects, thrips, and other plant-sucking insects that damage crops. Beetles typically have a particularly hard exosk ...
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