Bledius annularis

Bledius annularis, or ringed borrow rove beetle,[1] is a species of spiny-legged rove beetle in the family Staphylinidae.[2][3][4][5] It is found in North America.[3]

Bledius annularis
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Coleoptera
Family: Staphylinidae
Genus: Bledius
Species:
B. annularis
Binomial name
Bledius annularis
LeConte, 1863
Synonyms
  • Bledius languidus Casey, 1889

The lectotype for this taxon from a male specimen, collected from Lake Superior, and is housed within the Museum of Comparative Zoology at Harvard University.[6]

Habitat and distribution

Within New Brunswick, B. annularis is characteristically known to frequent damp clay riverbanks and shaded streams.[7]

A number of closely related species of Bledius are commonly grouped together and referred to as the "annularis complex", then further subdivided into the "annularis group". This 'complex' of difficult to distinguish species is distributed right across northern North America, and consists of B. annularis, B. breretoni, B. honestus, B. languidus, B.mysticus, B. nebulosus, B. sinuatus, B. stabilis, and B. washingtonensis.[8]:93

Description

The beetle is slender and elongate in appearance, measuring between 3.8 mm and 4.5 mm. Its head and thorax, as well as the tip of its abdomen are all black in colour, whilst the base of its abdomen, its elytra and its antennae are reddish-brown. Its legs are dark yellow. Its head is lightly granulate and also finely punctate. The thorax is not as wide as it is long, whilst the base of the abdomen is narrower than the elytra. The abdomen of this beetle sometimes appears slightly banded as a result of the hind margins of the upper (dorsal) segments being slightly darker in colour.[9]

gollark: Indeed.
gollark: Strange, isn't it?
gollark: Ah, ye olden trolley problem.
gollark: At least I think it was.
gollark: Ooh, ridiculous Turing-complete thing: AE2 autocrafting (it's a Minecraft mod).

References
  1. Working Group on General Status of NWT Species. "NWT Species 2016–2020 – General Status Ranks of Wild Species in the Northwest Territories," (PDF). www.assembly.gov.nt.ca. Department of Environment and Natural Resources, GNWT. p. 115. Retrieved 10 March 2018.
  2. "Bledius annularis Species Information". BugGuide.net. Retrieved 2018-02-25.
  3. "Bledius annularis Report". Integrated Taxonomic Information System. Retrieved 2018-02-25.
  4. "Bledius annularis Overview". Encyclopedia of Life. Retrieved 2018-02-25.
  5. "Bledius annularis species details". Catalogue of Life. Retrieved 2018-02-25.
  6. "MCZ Insect Type Database". 140.247.96.247. Retrieved 2018-03-10.
  7. Webster, Reginald P.; Davies, Anthony E.; Klimaszewski, Jan; Bourdon, Caroline (2016-03-24). "Further contributions to the staphylinid fauna of New Brunswick, Canada, and the USA, with descriptions of two new Proteinus species (Coleoptera, Staphylinidae)". ZooKeys (573): 31–83. doi:10.3897/zookeys.573.7830. PMC 4829926. PMID 27110167.
  8. Herman, Lee H. (25 August 1983). "Revision of Bledius. PART III. The annularis and emarginatus groups (Coleoptera, Staphylinidae, Oxytelinae)" (PDF). Bulletin of the American Museum of Natural History. 175. Retrieved 10 March 2018.
  9. Blatchley, W.S. (1910). An illustrated and descriptive catalogue of the Coleoptera of beetles known to occur in Indiana. W.B. Burford, contractor for state printing. p. 466.
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