Species Details
Arhopalus rusticus obsoletus
University of Alberta E.H. Strickland Entomological Museum Read more about this collection »
SeasonalityAdult flight period is June through July (Linsley 1962).
IdentificationColor brown; head with gula finely rugose; maxillary palpi with last segment triangular (Linsley 1962). Eyes hairy, pronotal surface smoother than A. foveicollis, with shallow depressions, elytra dull with weak ridges (Yanega 1996). Lenth 16-25mm (Linsley 1962). Attracted to u-v lights. There is a possible record of a sub-species, A. rusticus nubilus (LeConte), from Indiana; it is virtually indistinguishable, but slightly darker, with coarser sculpture beneath the head, slightly more projected mandibles, and a lightly more smoothly convex pronotum. The somewhat similar western species A. productus (LeConte), though their ranges do not seem to overlap, is distinctly more elongated and slender (Yanega 1996).
Scientific Name
Arhopalus rusticus obsoletus
Habitat
Boreal North America west to the Rocky Mountains and south to Guatamala (Linsley 1962).
Seasonality
Adult flight period is June through July (Linsley 1962).
Identification
Color brown; head with gula finely rugose; maxillary palpi with last segment triangular (Linsley 1962). Eyes hairy, pronotal surface smoother than A. foveicollis, with shallow depressions, elytra dull with weak ridges…
Color brown; head with gula finely rugose; maxillary palpi with last segment triangular (Linsley 1962). Eyes hairy, pronotal surface smoother than A. foveicollis, with shallow depressions, elytra dull with weak ridges (Yanega 1996). Lenth 16-25mm (Linsley 1962). Attracted to u-v lights. There is a possible record of a sub-species, A. rusticus nubilus (LeConte), from Indiana; it is virtually indistinguishable, but slightly darker, with coarser sculpture beneath the head, slightly more projected mandibles, and a lightly more smoothly convex pronotum. The somewhat similar western species A. productus (LeConte), though their ranges do not seem to overlap, is distinctly more elongated and slender (Yanega 1996).
Life History
Breeds on Pinus, larvae feed on the bases of roots and dead pine trees (Downie and Arnett 1996).
Conservation
No information available.
Diet Info
Hosts include Pinus sp, including P. tenuifolia (Linsley 1962).
Range
This species is found in the Northwest Territories, British Columbia, Alberta and Saskatchewan in Canada (Bousquet 1991), and in Nebraska, Montana, southern California, New Mexico and Texas in the United States.
Citation
Page Citation for Arhopalus rusticus obsoletus
Page Citation
"Species Details - Arhopalus rusticus obsoletus, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-4548. Accessed 19 Apr. 2024.
References
Author
Bousquet, Yves
Title
Checklist of beetles of Canada and Alaska.
Publication Date
1991
Pages
430
Author
Yanega, D.
Title
Field Guide to northeastern longhorned beetles (Coleoptera: Cerambycidae).
Publication Date
1996
Pages
174 pp
Author
Downie, N. M. and R. H. Arnett
Title
The beetles of northeastern North America.
Publication Date
1996
Volume
1
Pages
880 pp.
Author
Linsley, E. G.
Title
The cerambycidae of North America, Part 2: taxonomy and classification of the Parandrinidae, Prionidae, Spondylinae, and Aseminae.
Publication Date
1962
Series Title
University of California Publications in Entomology
Volume
19
Pages
68-76
Specimen Information
There are 2 specimens of this Species.
UASM32066 - Arhopalus rusticus obsoletus
University of Alberta E.H. Strickland Entomological Museum
Place CollectedUnited States: Alabama, Tuscaloosa county, Tuscaloosa
Collected ByBall, G. E.
UASM32067 - Arhopalus rusticus obsoletus
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: New Brunswick, New Jersey
Collected ByWhitehead, D. R.
Date Collected1958-06-30