The Cedar Glade Mimic MillipedePaul Marek
Brachoria cedra individuals are about 37.5 mm long and 9.9 mm wide (females 38.7 mm X 10.2 mm). Color: 3-spotted yellow (shown above) or orange (rare); and 2-spotted yellow (rare).
Brachoria cedra genitalia - left male gonopodal acropodite (with setae removed): (Left) medial view and (Right) magnified apical view. © Paul Marek
Brachoria cedra, 3-spotted orange color morph. © Paul Marek
Brachoria cedra, 3-spotted yellow color morph with faint medial metatergal spots. © Paul Marek
Brachoria cedra, 3-spotted yellow color morph (note the variation in spot shape and hue between color morphs, in particular this specimen and the other 3-spotted color morph at the top). © Paul Marek
HabitatBrachoria cedra was previously only known from the cedar glades around Jonesville in Lee County, Virginia; however, other localities in Lee County have recently been discovered, including a disjunct population around High Knob in the tulip and maple deciduous forest. All specimens were collected during the day in either cedar forests (Juniperus virginiana) or mixed mesophytic deciduous forests. At the cedar glade localities, individuals were found beneath layers of decomposing cedar leaves. Brachoria cedra normally occurred beneath cedar duff on the plate-like dolomitic limestone. One other xystodesmid encountered sympatrically at this locality is Apheloria virginiensis corrugata which has a strong mimetic resemblance with B. cedra. At the other localities, B. cedra was found beneath decomposing leaves of broadleaf species like maple, tulip, and oak. Note: Individuals of B. cedra may easily be confused in the field with Apheloria virginiensis corrugata, B. dentata, B. insolita, B. mendota, B. sheari and B. hoffmani due to similarity in color patterns (around High Knob all of these species, except B. sheari and B. mendota, can be found as mimics) and overlap in distribution.
DistributionKnown from four areas in southwestern Virginia from Edd’s Mill in southwestern Lee County, Virginia, northeast through the cedar glades and Lovelady Gap, to the highlands around High Knob in Norton City and Wise Counties, VA. Brachoria cedra co-occurs with B. dentata, B. insolita, B. mendota, B. sheari and B. hoffmani forming a component of a Müllerian mimicry ring with them.
Conservation statusBrachoria cedra is threatened by habitat loss due to agriculture (especially growing demand for paper products), coal mining, development, and the invasion of exotic species.
Marek P.E. 2010. A revision of the Appalachian millipede genus Brachoria Chamberlin, 1939 (Polydesmida: Xystodesmidae: Apheloriini). Zool. J. Linn. Soc. 159: 817-889.
Keeton W.T. 1959. A revision of the millipede genus Brachoria (Polydesmida: Xystodesmidae) Proc. US Nat. Mus. 109: 1-58.
Keeton WT. 1965. Descriptions of three new species of Brachoria, with notes on established species (Diplopoda, Polydesmida, Xystodesmidae). Proc. Biol. Soc. Wash. 78: 225-240.
Hoffman RL. 1971. Millipeds of the genus Brachoria from southwestern Virginia (Polydesmida: Xystodesmidae). Rad. Rev. 25: 83-99.
Hoffman R.L. 1999. Checklist of the millipeds of North and Middle America. Virginia Museum of Natural History Special Publication. No. 8. Martinsville: Virginia Museum of Natural History.
About This PageWork on the millipede Tree of Life pages was supported by a U.S. National Science Foundation Doctoral Dissertation Improvement Grant to Paul Marek and Jason Bond (DEB 0607996) and a Partnerships for Enhancing Expertise in Taxonomy Grant to Petra Sierwald, Jason Bond, and William Shear (DEB 0529715).
Virginia Polytechnic Institute and State University
Correspondence regarding this page should be directed to Paul Marek at
Page copyright © 2010 Paul Marek
Page: Tree of Life Brachoria cedra Authored by . The Cedar Glade Mimic Millipede.Paul Marek. The TEXT of this page is licensed under the Creative Commons Attribution-NonCommercial License - Version 3.0. Note that images and other media featured on this page are each governed by their own license, and they may or may not be available for reuse. Click on an image or a media link to access the media data window, which provides the relevant licensing information. For the general terms and conditions of ToL material reuse and redistribution, please see the Tree of Life Copyright Policies.
- First online 16 September 2010
- Content changed 16 September 2010
Citing this page:
Marek, Paul. 2010. Brachoria cedra http://tolweb.org/Brachoria_cedra/144211/2010.09.16 in The Tree of Life Web Project, http://tolweb.org/. The Cedar Glade Mimic Millipede. Version 16 September 2010 (under construction).