Tenebrio obscurus

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Tenebrio obscurus
Dunkler Mehlkafer Tenebrio obscurus 2557.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Coleoptera
Infraorder: Cucujiformia
Family: Tenebrionidae
Genus: Tenebrio
Species:
T. obscurus
Binomial name
Tenebrio obscurus
Fabricius, 1792

Tenebrio obscurus, or the dark mealworm beetle, is a species of darkling beetle [1] [2] [3] whose larvae are known as mini mealworms. These insects should not be confused with younger mealworms ( Tenebrio molitor ) [4] or with the confused flour beetle ( Tribolium confusum ). [5]

Tenebrio obscurus larvae resemble very small mealworms. Larvae are cylindrical and initially white, darkening as they mature. Larvae can reach a length of 25 to 30 millimetres (0.98 to 1.18 in). [6] Larvae then pupate, and later emerge as small, black beetles, 12 to 18 millimetres (0.47 to 0.71 in) long. In appearance, adults are similar to the yellow mealworm. They may have a lighter brown color [6] or appear dull rather than shiny. [7]

Mini mealworm larvae are used as a feeder insect for birds, reptile and amphibian pets, and zoo animals. [8] [9] Both Tenebrio obscurus and Tenebrio molitor are being studied for their ability to biodegrade waste polystyrene products. [10] [11]

Related Research Articles

<span class="mw-page-title-main">Mealworm</span> Species of beetle

Mealworms are the larval form of the yellow mealworm beetle, Tenebrio molitor, a species of darkling beetle. Like all holometabolic insects, they go through four life stages: egg, larva, pupa, and adult. Larvae typically measure about 2.5 centimetres (0.98 in) or more, whereas adults are generally 1.25 to 1.8 centimetres in length.

<span class="mw-page-title-main">Darkling beetle</span> Family of beetles

Darkling beetle is the common name for members of the beetle family Tenebrionidae. The number of species in the Tenebrionidae is estimated at more than 20,000 and the family is cosmopolitan in distribution.

<i>Zophobas morio</i> Species of beetle

Zophobas morio is a species of darkling beetle, whose larvae are known by the common name superworm, kingworm, morio worm or simply Zophobas. Superworms are common in the reptile pet industry as food, along with giant mealworms, which are Tenebrio molitor larvae sprayed with juvenile hormone.

<i>Zophobas</i> Genus of beetles

Zophobas is a genus of beetles in the family Tenebrionidae, the darkling beetles. In Cuba beetles of this genus are known as blind click-beetles.

<span class="mw-page-title-main">Flour beetle</span> Common name for beetles that eat flour

Flour beetles are members of the darkling beetle genera Tribolium or Tenebrio. They are pests of cereal silos and are widely used as laboratory animals, as they are easy to keep. The flour beetles consume wheat and other grains, are adapted to survive in very dry environments, and can withstand even higher amounts of radiation than cockroaches. They are a major pest in the agricultural industry and are highly resistant to insecticides.

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

Tenebrioninae is the largest subfamily of the darkling beetles (Tenebrionidae), containing flour beetles, among others. Tenebrioninae contains more than 20 tribes.

<span class="mw-page-title-main">Red flour beetle</span> Species of beetle

The red flour beetle is a species of beetle in the family Tenebrionidae, the darkling beetles. It is a worldwide pest of stored products, particularly food grains, and a model organism for ethological and food safety research.

<span class="mw-page-title-main">Insect farming</span> Raising and breeding insects as livestock

Insect farming is the practice of raising and breeding insects as livestock, also referred to as minilivestock or micro stock. Insects may be farmed for the commodities they produce, or for them themselves; to be used as food, as feed, as a dye, and otherwise.

<span class="mw-page-title-main">Scarabiasis</span> Medical condition

Scarabiasis, or "beetle-disease", is a condition where beetles temporarily infest the digestive tract of other animals. It can also affect humans, and despite being a rare phenomenon, it is the second most important insectal disease in humans after myiasis, which is caused by the larva of flies. The term is commonly used as a synonym of canthariasis, but the latter refers to the infection of animal tissues by beetle larva, whereas the Scarabiasis refers to the infection by adult beetles. Moreover, Scarabiasis refers to the passing of live beetles in animal faeces. Reported symptoms of scarabiasis include loss of appetite, diarrhea, abdominal cramps, vomiting, nausea, and insects in stool. Scarabiasis has been known to infect the gastrointestinal tract, urogenital system, nasal sinuses, ears, and faces of mammals and other animals.

<i>Eleodes osculans</i> Species of beetle

Eleodes osculans, the wooly darkling beetle or woolly ground beetle, is a common insect in coastal southern and central California in wooded areas or chaparral, and in Baja California. As a stink beetle of genus Eleodes, its easily observed defensive posture is to raise its hind end and secrete an unpleasant odor. E. osculans has a length of 12-16 mm and is the only known darkling beetle species with reddish-brown hair covering most of its black exoskeleton. It is similar to Eleodes nigropilosa and Eleodes littoralis, which have darker hair.

Acarophenacidae is a family of mites in the order Trombidiformes that are egg parasitoids and ectoparasites of beetles or thrips. It contains eight genera and around 40 species.

<i>Alphitobius diaperinus</i> Species of beetle

Alphitobius diaperinus is a species of beetle in the family Tenebrionidae, the darkling beetles. It is known commonly as the lesser mealworm and the litter beetle. It has a cosmopolitan distribution, occurring nearly worldwide. It is known widely as a pest insect of stored food grain products such as flour, and of poultry-rearing facilities and it is a vector of many kinds of animal pathogens. In larval form, it is an approved novel food in the European Union, and also used as feed.

Farinocystis is a genus of parasitic alveolates of the phylum Apicomplexa. Species in this genus infect insects (Coleoptera).

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

Tribolium is a genus of flour beetles in the family Tenebrionidae. They are known by various common names including flour beetles, flour weevils, red weevils and bran bugs.

<i>Tenebrio</i> Genus of beetles

Tenebrio is a genus of darkling beetles. Adults are 12–18 mm (0.47–0.71 in) long and can live for 1–2 years. The larvae are minor pests, but they are also widely reared and sold as pet food.

<i>Palorus</i> Genus of beetles

Palorus is a genus of darkling beetles in the family Tenebrionidae. There are at least 4 described species in Palorus.

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

Triboliini is a tribe of darkling beetles in the family Tenebrionidae. There are about 10 genera in Triboliini.

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

Tenebrionini is a tribe of darkling beetles in the family Tenebrionidae. There are at least 20 genera in Tenebrionini.

Epantius is a genus of darkling beetles in the family Tenebrionidae. There is one described species in Epantius, E. obscurus.

<i>Palorus subdepressus</i> Species of beetle

Palorus subdepressus, the depressed flour beetle, is a species of darkling beetle in the family Tenebrionidae. It is found in Europe and North America.

References

  1. "Tenebrio obscurus Fabricius, 1792". Integrated Taxonomic Information System . Retrieved 4 January 2017.
  2. Bousquet, Yves; Thomas, Donald B.; Bouchard, Patrice; Smith, Aaron D.; Aalbu, Rolf L.; Johnston, M. Andrew; Jr, Warren E. Steiner (15 January 2018). "Catalogue of Tenebrionidae (Coleoptera) of North America". ZooKeys (728): 1–455. doi: 10.3897/zookeys.728.20602 . ISSN   1313-2970. PMC   5799738 . PMID   29416389.
  3. Rees, David (21 July 2004). Insects of Stored Products. CSIRO Publishing. pp. 112–113. ISBN   978-0-643-10263-7.
  4. Dellinger, Theresa A. (February 17, 2023). "Darkling Beetles and Mealworms". Virginia Polytechnic Institute and State University.
  5. "Tribolium 101: Identifying a Flour Beetle". Tribute to the Tribolium. 20 November 2012. Retrieved 19 September 2023.
  6. 1 2 "Dark mealworm". Canadian Grain Commission. Government of Canada. 9 April 2018. Retrieved 19 September 2023.
  7. "Darkling Beetle". Virginia Cooperative Extension.
  8. Mariod, Abdalbasit Adam; Mirghani, Mohamed Elwathig Saeed; Hussein, Ismail Hassan (14 April 2017). Unconventional Oilseeds and Oil Sources. Academic Press. ISBN   978-0-12-813433-7.
  9. Hall, Heidi; Fitches, Elaine; Smith, Rhonda (31 August 2021). Insects as Animal Feed: Novel Ingredients for Use in Pet, Aquaculture and Livestock Diets. CABI. ISBN   978-1-78924-592-9.
  10. Peng, BY; Su, Y; Chen, Z; Chen, J; Zhou, X; Benbow, ME; Criddle, CS; Wu, WM; Zhang, Y (7 May 2019). "Biodegradation of Polystyrene by Dark ( Tenebrio obscurus) and Yellow ( Tenebrio molitor) Mealworms (Coleoptera: Tenebrionidae)". Environmental Science & Technology. 53 (9): 5256–5265. doi:10.1021/acs.est.8b06963. PMID   30990998. S2CID   119102958.
  11. Palmer, Kevin J.; Lauder, Kerri; Christopher, Kyeshaun; Guerra, Fatima; Welch, Rebecca; Bertuccio, Alex J. (14 January 2022). "Biodegradation of Expanded Polystyrene by Larval and Adult Stages of Tenebrio molitor with Varying Substrates and Beddings". Environmental Processes. 9 (1): 3. doi:10.1007/s40710-021-00556-6. ISSN   2198-7505. S2CID   245909637.