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Like other Geodorcus species, this large, slow-moving beetle is protected from collectors under schedule 7 of the 1953 Wildlife Act. [10] Captive breeding and reintroduction to rat-free islands such as Lizard Island was the Department of Conservation plan for ensuring this species' survival. [7]
Geodorcus helmsi is a large flightless stag beetle that varies in colour from black to brownish-black. Its dorsal surface can vary from dull to glossy. Like other stag beetles, they show sexual dimorphism: males range in size from 17.5–44.0 mm, including their large mandibles, while females are smaller (16.5–27.5 mm) with less conspicuous mandibles. [4]
Moneilema gigas is a large, flightless, black beetle native to the Sonoran desert at elevations below 1500 metres. [1] The front wings are fused forming a single, hardened shell. Collectively - with 19 other Moneilema species - M. gigas is also known as the cactus longhorn beetle .
Moneilema, or cactus longhorn beetles are a genus of large, flightless, black beetles found in North American deserts of the western United States and northern Mexico. M. gigas is native to the Sonoran Desert at elevations below 4900 feet (1500m). [ 1 ]
They are flightless, slow-moving beetles, vulnerable to being eaten by mice and rats, and their host plants are susceptible to browsing by mammals such as sheep, pigs, and goats. [6] One population at Åwhiro Bay on the Wellington coast was destroyed when their entire habitat was turned into a quarry. [3]
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.
Once metamorphosis is complete, the insect sheds its pupal skin and undergoes a period of hibernation as an adult beetle until the dry season ends. [2] When the rains begin, the beetle breaks open its cocoon, locates a mate, and the entire life cycle starts over again. The adult beetles feed on materials rich in sugar, especially tree sap and ...
Nearly all of the 500-odd species are tropical; species found in North America are notable for their size, ranging from 20 to 43 mm, for having a single "horn" on the head, and for a form of social behavior unusual among beetles. Bodies are elongate-cylindrical and black overall; ventral surfaces may be covered with yellow setae.