User:Mprebus/Sinodendron rugosum
| Rugose Stag Beetle | |
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| Male Sinodendron rugosum | |
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| Species: | S. rugosum
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| Binomial name | |
| Sinodendron rugosum (Mannerheim, 1843)
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Sinodendron rugosum is a member of the family Lucanidae, the stag beetles. It is commonly referred to as the Rugose Stag Beetle, and is the only known member of the genus Sinodendron to occur in western North America.
Description[edit]
The adults of this species exhibit sexual dimorphism, a common trait in Lucanidae, as well as unopposable clubbed antennae. Both sexes are 11-18 mm in length, black in coloration, and have small mandibles. The pronotum and elytra are covered in many small pits, leading to an overall "rugose" appearance. The head of the male is much narrower than the pronotum, and has a short, median rhinoceros-like horn. The female either lacks a horn or has a small median tubercle.[1][2]
Range[edit]
Sinodendron rugosum is found in moist woodlands from British Columbia to California[3]. Adults are commonly found on the ground from spring to early summer[2].
Life History[edit]
The white, C-shaped larvae hatch on bark and tunnel inward, creating pupal chambers in decaying wood[3]. They have been associated with oak, alder, willow and cherry[4]. Adults may feed on plant juices or aphid honeydew[3]. The horn of the male is occasionally used in combat with other males in order to establish dominance when competing for mates[1].
Predators[edit]
Sinodendron rugosum has been identified as one of many species eaten by the Northern Spotted Owl Strix occidentalis[5].
References[edit]
- ^ a b Ratcliffe, B. C. 2002. Chapter 23. Lucanidae Latreille 1804, pp. 6-9. In, Arnett, R. H., M. Thomas, P. E. Skelley, and J. H. Frank (eds.), American Beetles, Volume 2. CRC Press, Boca Raton, FL. 861 pp. Web. 11 May 2010.
- ^ a b Haggard, Peter and Judy Haggard, Insects of the Pacific Northwest. Portland, OR: Timber Press, Inc. 2006. Print.
- ^ a b c Griffin, N. W. "griffin thesis". Whitman College. Web. 11 May 2010 <http://www.whitman.edu/environmental_studies/JWC/griffin.htm#rsb>. Cite error: The named reference "griffin2002" was defined multiple times with different content (see the help page).
- ^ McKey-Fender, Dorothy 1948. Distribution in Certain Lucanidae, pp. 43-44, The Coleopterists Bulletin, Vol. 2, No. 5. The Coleopterists Society, 1948. Web. 11 May 2010 <http://www.jstor.org/stable/3998776?cookieSet=1>.
- ^ Forsman, Eric 1976. "A Preliminary Investigation of the Spotted Owl in Oregon". thesis. Oregon State University 1976. Web. 11 May 2010 <http://ir.library.oregonstate.edu/jspui/bitstream/1957/7272/1/Forsman_Eric.pdf>.