Species Details

Dinothenarus capitatus

University of Alberta E.H. Strickland Entomological Museum Read more about this collection »

SeasonalityThe only D. capitatus specimen in the Strickland Museum was collected in June. IdentificationThe size of an adult D. capitatus ranges between 12.5 to 15mm (Downie and Arnett, 1996). The adult D. capitatus is quickly recognized by a densely punctate head with dark yellow color. The temples are almost straight behind the eye (Smetana and Davies, 2000). The color of the head contrasts with the dark brown pronotum and abdomen. The pronotum is covered with patches of yellow setae among the black setae (Downie and Arnett, 1996). The legs are mostly dark brown with some dark yellow area on dorsal side of femur and tibia. The antennae are slightly darker than the head. The densely punctate elytra are covered with widely scattered smooth spots with dark pubescent (Downie and Arnett, 1996). Abdominal terga (dorsal abdominal segment) 2-4 with H-shaped velvety spot at middle and segment 5-6 with gray pubescence (Downie and Arnett, 1996). The gray pubescence is also present on nearly all sternites (ventral abdominal segment). Tarsal formula 5-5-5 and 11 antenomeres with the last one transverse. The last segment of the labial palp is narrow and fusiliform (Downie and Arnett, 1996).

Scientific Name Dinothenarus capitatus Habitat Found on dung, carrion and fungus of various kinds in the northern forests (Arnett and Thomas, 2000). Seasonality The only D. capitatus specimen in the Strickland Museum was collected in June. Identification
The size of an adult D. capitatus ranges between 12.5 to 15mm (Downie and Arnett, 1996). The adult D. capitatus is quickly recognized by a densely punctate head with dark yellow color. The temples are almost…
The size of an adult D. capitatus ranges between 12.5 to 15mm (Downie and Arnett, 1996). The adult D. capitatus is quickly recognized by a densely punctate head with dark yellow color. The temples are almost straight behind the eye (Smetana and Davies, 2000). The color of the head contrasts with the dark brown pronotum and abdomen. The pronotum is covered with patches of yellow setae among the black setae (Downie and Arnett, 1996). The legs are mostly dark brown with some dark yellow area on dorsal side of femur and tibia. The antennae are slightly darker than the head. The densely punctate elytra are covered with widely scattered smooth spots with dark pubescent (Downie and Arnett, 1996). Abdominal terga (dorsal abdominal segment) 2-4 with H-shaped velvety spot at middle and segment 5-6 with gray pubescence (Downie and Arnett, 1996). The gray pubescence is also present on nearly all sternites (ventral abdominal segment). Tarsal formula 5-5-5 and 11 antenomeres with the last one transverse. The last segment of the labial palp is narrow and fusiliform (Downie and Arnett, 1996).
Life History
Like all the members of the Staphilinini tribe, D. capitatus possesses paired eversible defensive glands located at the tip of the abdomen (Arnett and Thomas, 2000). If threatened, D. capitatus brings its last…
Like all the members of the Staphilinini tribe, D. capitatus possesses paired eversible defensive glands located at the tip of the abdomen (Arnett and Thomas, 2000). If threatened, D. capitatus brings its last abdominal segment in contact with the threat and releases a chemical mixture (often mixed with defecation) to repell it.
Conservation Rare in North America from Newfoundland to British-Columbia (Arnett and Thomas, 2000). Diet Info No information available. Range In North America, from Newfoundland to British-Columbia (Arnett and Thomas, 2000).
Dinothenarus capitatus
Dinothenarus capitatus

Citation

Page Citation for Dinothenarus capitatus

Page Citation

"Species Details - Dinothenarus capitatus, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-5433. Accessed 29 Mar. 2024.

Authorship

Name Bourassa, S.
Role species page author
Date 2004

References

Specimen Information

There are 3 specimens of this Species.

3 results plotted on map in 2 markers.
Note: Only records with latitude and longitude coordinates are plotted on map.

UASM73524 - Dinothenarus capitatus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Cypress Hills Collected ByCarr, F. S. Date Collected1921-06-24

UASM333894 - Dinothenarus capitatus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Dixonville Collected ByPyper, M. Date Collected2006/2007

UASM333895 - Dinothenarus capitatus

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Dixonville Collected ByPyper, M. Date Collected2006/2007

Adult Seasonal Distribution