| Chiasognathus sombrus | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Coleoptera |
| Family: | Lucanidae |
| Genus: | Chiasognathus |
| Species: | C. sombrus |
| Binomial name | |
| Chiasognathus sombrus Paulsen & Smith, 2010 | |
Chiasognathus sombrus is a beetle which belongs to the family of stag beetles (Lucanidae) in the group Scarabaeoidea. [1]
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A medium-sized (22-28 millimeter), long-legged, semi-matt, brown stag beetle. [2] The body is short and wide. The pronotum has a bronze-like metallic lustre, and has a small spike at the back corner, in this species it is almost without hair except as a brim along the edge. The legs are slender, the legs (tibiae) with pointed thorns. The jaws of the male are relatively short, knife-shaped, bent down and inwardly bent at the end. The inner edge has a pair of teeth. The head is relatively small, the antennae have a long, thin shaft but no striking fan. The males have four clearly separated, round eyes, one pair sitting on the upper side of the jaws and one on the lower side. The cover wings are quite short and wide, without pointed rows. The legs are quite long, especially the front legs.
The females lack the males' greatly enlarged jaws, although the jaws of the females are also quite strong.
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These beetles live in the Valdivian temperate forests along the west side of the Andes. The adult beetles move around a lot up in tall trees, where the males fight for the females with the help of their long jaws. The species likes to fly in the sunshine. The males' jaws probably prevent them from eating, most likely the females do not feed themselves as adults either. The larvae live in the soil where they eat roots.
Stag beetles are a family of about 1,200 species of beetles in the family Lucanidae, currently classified in four subfamilies. Some species grow to over 12 centimetres, but most to about 5 cm (2 in).
The false stag beetles (Diphyllostoma) are a group of three species of rare beetles known only from California. Almost nothing is known of their life history beyond that the adults are diurnal and females are flightless; larvae have not been observed.
Scarabaeoidea is a superfamily of beetles, the only subgroup of the infraorder Scarabaeiformia. Around 35,000 species are placed in this superfamily and some 200 new species are described each year. Its constituent families are also undergoing revision presently, and the family list below is only preliminary.
Lucanus cervus, known as the European stag beetle, or the greater stag beetle, is one of the best-known species of stag beetle in Western Europe, and is the eponymous example of the genus. L. cervus is listed as Near Threatened by the IUCN Red List.
Lucanus capreolus, the reddish-brown stag beetle, is a beetle of the family Lucanidae. The specific name capreolus is derived from Latin, meaning "roe deer". The name refers to the resemblance of the mandibles to deer antlers.
Chiasognathus grantii is a species of stag beetle found in Argentina and Chile. It is known as Darwin's beetle, Grant's stag beetle, or the Chilean stag beetle.
Chiasognathus is a genus of stag beetles found in Argentina and Chile. It includes seven species:
Cyclommatus metallifer is a species of stag beetle in the family Lucanidae. There is sexual dimorphism within the species. Males are generally larger in size and have enlarged mandibles. It is named for its metallic coloration, which ranges in color and may be varying levels of black, brown, or gold. This species is notably easy to maintain, making it a useful species for scientific study. Additionally, it has been kept as an exotic pet.
Hexarthrius parryi, the fighting giant stag beetle, is a species of large stag beetles. It belongs to the genus Hexarthrius of the tribe Lucanini. It is classified under the subfamily Lucaninae of the stag beetle family Lucanidae.
Leptinopterus tibialis is a species of beetles belonging to the family Lucanidae.
Protognathinus is an extinct genus of stag beetle from the Eocene of Europe, known from the Messel Pit in Germany. This genus is known from the single species P. spielbergi.
Apterocyclus honoluluensis, the Kauai flightless stag beetle, is a species of stag beetle in the family Lucanidae. It is found on the island of Kauai in the Hawaiian Islands.
Apterocyclus palmatus is a species of stag beetle in the family Lucanidae. It is found on the island of Kauai in the Hawaiian Islands.
Apterocyclus is a genus of rare stag beetles in the family Lucanidae. There are about five described species in Apterocyclus. The species of Apterocyclus are found only on the island of Kauai in the Hawaiian Islands, and are the only scarabaeoid beetles native to the Hawaiian Islands.
Platyceroides is a genus of stag beetles in the family Lucanidae. There are about 16 described species in Platyceroides.
Apterocyclus kawaii is a species of stag beetle in the family Lucanidae. It is found on the island of Kauai in the Hawaiian Islands.
Apterocyclus munroi is a species of stag beetle in the family Lucanidae. It was found on the island of Kauai in the Hawaiian Islands in 1897.
Apterocyclus waterhousei is a species of stag beetle in the family Lucanidae. The rare, flightless beetle is found only on the island of Kauai in the Hawaiian Islands. It has been reported in several locations on the island in recent years.
Hexarthrius melchioritis is a species of beetle, which belongs to the family of stag beetles (Lucanidae) in the group Scarabaeoidea.
Dinonigidius bartolozzii, is a species of stag beetle endemic to Sri Lanka.