| Dryobius sexnotatus |
| Six-banded longhorn beetle |
Key Characteristics
The six-banded longhorn beetle is a medium-sized, 0.75 to 1 inch (1.9-2.5 cm) elongated black beetle distinctly marked with 8 yellow bands: 2 on the head, 2 on the pronotum, and four on the elytra (outer wing coverings). The antennae are long and curving.
Status and Rank
- State Status: T - Threatened (legally protected)
- State Rank: SH - Possibly extirpated
- Global Rank: GNR - Not ranked
Occurrences
No known occurrences in Michigan
Information is summarized from MNFI's database of rare species and community occurrences. Data may not reflect true distribution since much of the state has not been thoroughly surveyed.
Habitat
It inhabits mature hardwood forests with large, overmature trees (especially elm, maple, and beech used by wood-boring larvae). Feeding continues until after trees die and bark has fallen off.
Natural Community Types
Management
Avoid large-scale timber harvests and retain large, overmature trees and dead snags in floodplains and mesic forests.
Active Period
Active from fourth week of April to fourth week of September
Survey Methods
Actively search trees by looking under loose bark for adults.
- Search suitable habitat
- Survey Period: From fourth week of April to fourth week of September
- Time: Morning (after sunrise)
- Time: Afternoon
- Survey Period: From fourth week of April to fourth week of September
References
Survey References
- Borror, D.J. and R.E. White. 1970. A Field Guide to the Insects of North America and Mexico. Houghton Mifflin Company, Boston. 404pp.
- Martin, J.E.H. 1977. The Insects and Arachnids of Canada (Part 1): Collecting, preparing, and preserving insects, mites, and spiders. Publication 1643. Biosystematics Research Institute, Ottawa.
- Warriner, M.D. 2002. Rare insect fact sheet for Dryobius sexnonatus (Six banded longhorned beetle). Arkansas Natural Heritage Commission, Little Rock. 1pp.
Technical References
- Warriner, M.D. 2002. Rare insect fact sheet for Dryobius sexnonatus (Six banded longhorned beetle). Arkansas Natural Heritage Commission, Little Rock. 1pp.