Oxysternon

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Oxysternon
Oxysternon-conspicillatum male.jpg
male Oxysternon conspicillatum
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Coleoptera
Family: Scarabaeidae
Tribe: Phanaeini
Genus: Oxysternon
Laporte, 1840
Type species
Scarabaeus festivum [1]
Synonyms

SternaspisHope, 1837
StrombodesGistel, 1857

Oxysternon is a Neotropical genus of scarab beetles (Scarabaeidae) in the superfamily Scarabaeoidea. It can be distinguished from all other phanaeines and scarabaeine dung beetles by a long, spiniform extension of the anterior angle of the metasternum. Most species vary in color and pattern, and are more commonly found in tones of green, often infused with yellow or coppery highlights. All species appear very smooth or glassy smooth to the unaided eye. [1] [2]

Contents

Taxonomy

Nomenclature

The genus Sternaspis was proposed first by Hope in 1837, but the name was preoccupied and thus invalid. Laporte, writing under the pen name of Le Compte de Castelnau, proposed the genus Oxysternon to include several species of Phanaeus -like species. O. festivum was later designated as the type species. [3] [1]

Phylogeny

The genus is monophyletic and its sister group is the genus Phanaeus . Two subgenera and two further species groups are recognized by some authors. It has been suggested that the current distribution of the species reflect vicariance events following climatic fluctuations in the Amazon. [1]

Species

There are currently 11 species in the genus Oxysternon. [2]

Distribution and habitat

Oxysternon is a Neotropical genus and most species are native to the Amazon basin or the Guiana Shield in South America. The ranges of the widespread O. conspicillatum and O. silenus also extend into the Chocó and southern Central America. Only two species are absent from both the Amazon basin and the Guiana Shield: O. pteroderum is restricted to Atlantic Forest in eastern Brazil and the common O. palaemon is found widely in the Cerrado. [1] [2] Except for O. palaemon from the Cerrado, Oxysternon species inhabit very humid to mesic forest, sometimes extending slightly into nearby drier woodlands and savanna, and they have different degrees of tolerance to fragmentation and forest degradation. [1] [2] [5]

Behavior

The behavior of Oxysternon species has not been studied in detail. All species seem to be coprophagous or copro-necrophagous, although fruit pulp is sometimes used as an adult food resource. [6]

Related Research Articles

<i>Phanaeus vindex</i> Species of beetle

Phanaeus vindex, the rainbow scarab, is a North American species of true dung beetle in the family Scarabaeidae. It is found in eastern and central United States and in adjacent far northern Mexico. It is the most widespread species of Phanaeus in the United States and it has a wide habitat tolerance. It may hybridize with the generally less common P. difformis.

<i>Mesonauta</i> Genus of fishes

Mesonauta, the flag cichlids, is a small genus of cichlids native to the Amazon, Orinoco, Essequibo, Paraná and Paraguay basins in South America. Mesonauta is included in the subfamily Cichlasomatinae. They occur in various freshwater habitats such as streams and lakes, especially in areas with little water movement and aquatic vegetation. They are generally found in small groups that stay near the water surface. To avoid predators, adults may jump out of the water and juveniles mimic leaves.

<i>Ataenius</i> Genus of beetles

Ataenius is a genus of aphodiine dung beetles in the family Scarabaeidae. There are at least 290 described species in Ataenius.

<i>Coprophanaeus</i> Genus of beetles

Coprophanaeus is a genus in the family Scarabaeidae. The genus is almost entirely Neotropical, with a single species, C. pluto, ranging into southernmost Texas in the United States. They are medium-sized to large beetles, with the South American C. ensifer and C. lancifer sometimes exceeding 5 cm (2 in) in length, making these two some of the largest dung beetles in the world and the largest in the Americas. They often have a horn on the head, and are typically a bright metallic color, most often blue or green, or black. These diurnal or crepuscular beetles are excellent diggers and good fliers.

<span class="mw-page-title-main">Aegialiinae</span> Subfamily of beetles

Aegialiinae is a small subfamily of the family Scarabaeidae. Historically the group has been treated as a tribe within a broad definition of the subfamily Aphodiinae.

<i>Coprophanaeus ensifer</i> Species of beetle

Coprophanaeus ensifer is a large South American species of beetle belonging to the family Scarabaeidae.

<i>Phanaeus</i> (beetle) Genus of beetles

Phanaeus, the rainbow scarabs, is a genus of true dung beetles in the family Scarabaeidae, ranging from the United States to northern Argentina, with the highest species richness in Mexico. Depending on species, they can inhabit a wide range of habitats, from tropical to temperate climates and deserts to rainforests. In those living in relatively arid places adults are primarily active during the wet season and those living in relatively cold places are primarily active during the summer. They are excellent diggers and good fliers.

<i>Phanaeus demon</i> Species of beetle

Phanaeus demon is a species of beetles belonging to the family Scarabaeidae. This species is often incorrectly named as "damon" in collections and in the literature.

<i>Sulcophanaeus</i> Genus of beetles

Sulcophanaeus is a genus of dung beetles belonging to the family Scarabaeidae. Most species in this genus are from tropical and subtropical South America, but a few are found in Central America and Mexico, and S. carnifex is from Jamaica. Sulcophanaeus are mostly coprophagous, but some are also necrophagous. They are paracoprids, meaning that adults dig tunnels into the soil under the food source and move parts of the food source to a nest chamber where the eggs are laid, and their activity pattern varies depending on species.

<i>Anoplognathus prasinus</i> Species of beetle

Anoplognathus prasinus, commonly known as the green Christmas beetle, is a beetle of the family Scarabaeidae native to eastern Australia.

<i>Oxysternon festivum</i> Species of beetle

Oxysternon festivum is a species of dung beetle of the scarab beetle family. It is a common, diurnal species from northeastern South America and Trinidad where it mostly inhabits forest.

<i>Cartwrightia</i> Genus of beetles

Cartwrightia is a genus of scarab found in Latin America. It was named and circumscribed in 1958 by Federico Islas Salas. As of 2017, three species are recognized: C. intertribalis, C. cartwrighti, and C. islasi. They can be found in the nests of leafcutter ants or in dung.

<i>Cartwrightia cartwrighti</i> Species of beetle

Cartwrightia cartwrighti is a species of aphodiine scarab found in South America. Oscar L. Cartwright named the species in 1967 after his brother. C. cartwrighti has been recorded in cow dung in pastures and forests.

<i>Phanaeus difformis</i> Species of beetle

Phanaeus difformis is a species of true dung beetle in the family Scarabaeidae that is native to south-central United States and adjacent far northern Mexico. It may hybridize with the generally more common P. vindex.

<span class="mw-page-title-main">Phanaeini</span> Tribe of beetles

Phanaeini is a tribe of dung beetles in the family Scarabaeidae. There are about 12 genera and 200 described species in Phanaeini. They are native to the Americas with the highest species richness in the Neotropics. They are mostly coprophagous or necrophagous, but some of the least known genera appear to be myrmecophilous. They are medium-sized to large beetles, often with bright metallic colors, and often with horns on their heads.

<span class="mw-page-title-main">Macrodactylini</span> Tribe of beetles

Macrodactylini is a tribe of May beetles and junebugs in the family Scarabaeidae. There are at least 46 genera and over a thousand species described in the tribe Macrodactylini.

<i>Phanaeus adonis</i> Species of beetle

Phanaeus adonis is a species of true dung beetle in the family Scarabaeidae, found primarily in north-central Mexico, but also ranging into Cameron County in far southern Texas, United States.

<i>Phanaeus triangularis</i> Species of beetle

Phanaeus triangularis, the black phanaeus, is a North American species of true dung beetle in the family Scarabaeidae. It is found in the eastern half of the United States.

<i>Oxysternon conspicillatum</i> Species of beetle

Oxysternon conspicillatum is a species of dung beetle in the family Scarabaeidae. It is found in both evergreen and semi-deciduous mesic forests, including disturbed habitats, ranging from near sea level to an altitude of 3,000 m (9,800 ft) in the Amazon basin and Chocó of tropical South America and Panama, possibly extending as far west as the border region with Costa Rica. Both adults and young of this common and widespread beetle primarily feed on dung, but the species has also been recorded feeding on dead animals.

<i>Scarabaeus gangeticus</i> Species of beetle

Scarabaeus gangeticus, is a species of dung beetle found in many Indo-African countries including; India, Sri Lanka, Pakistan, Iran, Saudi Arabia, Egypt, Botswana, Ethiopia, Somalia, Uganda and Zimbabwe.

References

  1. 1 2 3 4 5 6 Edmonds, W. D. (1972). "Comparative skeletal morphology, systematics and evolution of the phanaeine dung beetles (Coleoptera: Scarabaeidae)". University of Kansas Science Bulletin. 49 (11): 731–874. Retrieved 17 June 2016.
  2. 1 2 3 4 Edmonds, W.D.; Zidek, J. (2004). "Revision of the Neotropical dung beetle genus Oxysternon (Scarabaeidae: Scarabaeinae: Phanaeini)". Folia Heyrovskyana. 11: 1–58.
  3. Castelnau, M. (Le Comte de) (1850). Histoire naturelle des insectes, coléoptères. Paris, France: Société Bibliophile. pp. Tome deuxieme, Premiere partie. doi:10.5962/bhl.title.36538., pag. 82
  4. Linné, Carl von (1767). Systema naturae : per regna tria natura, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis (Ed. 12, reformata. ed.). Holmiae :Impensis direct. Laurentii Salvii. doi:10.5962/bhl.title.68927. pag. 552
  5. Ferrer-Paris, José R.; Lozano, Cecilia; Cardozo-Urdaneta, Arlene; Thomas Cabianca, Arianna (2016). "Indicative response of Oxysternon festivum Linné (Coleoptera: Scarabaidae) to vegetation condition in the basin of the Orinoco river, Venezuela". Journal of Insect Conservation. 20 (3): 527–538. doi:10.1007/s10841-016-9886-6.
  6. Silvius, KM; Fragoso, JMV (2002). "Pulp handling by vertebrate seed dispersers increases palm seed predation by bruchid beetles in the northern Amazon". Journal of Ecology. 90 (6): 1024–1032. doi: 10.1046/j.1365-2745.2002.00728.x .