''Necrobia ruficollis'', the ham beetle, red-shouldered ham beetle, or red-necked bacon beetle, is a mostly

carnivorous A carnivore , or meat-eater (Latin, ''caro'', genitive ''carnis'', meaning meat or "flesh" and ''vorare'' meaning "to devour"), is an animal or plant whose nutrition and energy requirements are met by consumption of animal tissues (mainly mu ...

beetle Beetles are insects that form the Taxonomic rank, order Coleoptera (), in the superorder Holometabola. Their front pair of wings are hardened into wing-cases, elytra, distinguishing them from most other insects. The Coleoptera, with about 40 ...

in the family

Cleridae Cleridae are a family of beetles of the superfamily Cleroidea. They are commonly known as checkered beetles. The family Cleridae has a worldwide distribution, and a variety of habitats and feeding preferences. Cleridae have many Ecological nich ...

with a

cosmopolitan distribution In biogeography, a cosmopolitan distribution is the range of a taxon that extends across most or all of the surface of the Earth, in appropriate habitats; most cosmopolitan species are known to be highly adaptable to a range of climatic and en ...

Description

''Necrobia ruficollis'' is long, and is mostly a metallic black or dark blue colour. Its

thorax The thorax (: thoraces or thoraxes) or chest is a part of the anatomy of mammals and other tetrapod animals located between the neck and the abdomen. In insects, crustaceans, and the extinct trilobites, the thorax is one of the three main di ...

and

legs A leg is a weight-bearing and locomotive anatomical structure, usually having a columnar shape. During locomotion, legs function as "extensible struts". The combination of movements at all joints can be modeled as a single, linear element cap ...

and the bases of the

elytra An elytron (; ; : elytra, ) is a modified, hardened forewing of beetles (Coleoptera), though a few of the true bugs (Hemiptera) such as the family Schizopteridae are extremely similar; in true bugs, the forewings are called hemelytra (sometime ...

are reddish brown.

Ecology

It feeds on dead animals, including

dried Drying is a mass transfer process consisting of the removal of water or another solvent by evaporation from a solid, semi-solid or liquid. This process is often used as a final production step before selling or packaging products. To be consider ...

and

smoked meat Smoked meat is the result of a method of preparing red meat, white meat, and seafood which originated in the Paleolithic, Paleolithic Era. Smoking adds Flavor (taste), flavor, improves the appearance of meat through the Maillard reaction, and ...

s and

animal skin Skin is the layer of usually soft, flexible outer tissue covering the body of a vertebrate animal, with three main functions: protection, regulation, and sensation. Other animal coverings, such as the arthropod exoskeleton, have different ...

s, as well as on

cheese Cheese is a type of dairy product produced in a range of flavors, textures, and forms by coagulation of the milk protein casein. It comprises proteins and fat from milk (usually the milk of cows, buffalo, goats or sheep). During prod ...

. It is frequently found in

cadaver A cadaver, often known as a corpse, is a Death, dead human body. Cadavers are used by medical students, physicians and other scientists to study anatomy, identify disease sites, determine causes of death, and provide tissue (biology), tissue to ...

s in the later stages of

decomposition Decomposition is the process by which dead organic substances are broken down into simpler organic or inorganic matter such as carbon dioxide, water, simple sugars and mineral salts. The process is a part of the nutrient cycle and is ess ...

, and is thus useful in

forensic entomology Forensic entomology is a branch of applied entomology that uses insects and other arthropods as a basis for legal evidence. Insects may be found on cadavers or elsewhere around crime scenes in the interest of forensic science. Forensic entom ...

Latreille

French zoologist

Pierre André Latreille Pierre André Latreille (; 29 November 1762 – 6 February 1833) was a French zoology, zoologist, specialising in arthropods. Having trained as a Roman Catholic priest before the French Revolution, Latreille was imprisoned, and only regained hi ...

was imprisoned in 1793 in Bordeaux and faced deportation in

penal colony of Cayenne The penal colony of Cayenne (French: ''Bagne de Cayenne''), commonly known as Devil's Island (''Île du Diable''), was a French penal colony that operated for 100 years, from 1852 to 1952, and officially closed in 1953, in the Salvation Islands ...

, after failing to swear allegiance to the state following the

Civil Constitution of the Clergy The Civil Constitution of the Clergy () was a law passed on 12 July 1790 during the French Revolution, that sought the Caesaropapism, complete control over the Catholic Church in France by the National Constituent Assembly (France), French gove ...

. When the prison's doctor inspected the prisoners, he was surprised to find Latreille scrutinising a beetle on the dungeon floor. When Latreille explained that it was a rare insect, having identified it as ''Necrobia ruficollis'', the physician was impressed and sent the insect to a 15-year-old local naturalist,

Jean Baptiste Bory de Saint-Vincent Jean-Baptiste Geneviève Marcellin Bory de Saint-Vincent was a French naturalist, officer and politician. He was born on 6 July 1778 in Agen (Lot-et-Garonne) and died on 22 December 1846 in Paris. Biologist and geographer, he was particularly int ...

. Bory de St.-Vincent knew Latreille's work, and managed to obtain the release of Latreille and one of his cellmates. All the other inmates were dead within one month.

References

{{Taxonbar, from=Q6985636 Cleridae Beetles described in 1775 Cosmopolitan insects Taxa named by Johan Christian Fabricius