Bug FAQIvory-marked Borer
Eburia quadrigeminata · Order: Coleoptera · Family: Cerambycidae
The ivory-marked borer (Eburia quadrigeminata) is a North American long-horn beetle in the family Cerambycidae. Adults are 12 to 25 mm long (about 0.5 to 1 in). Its larvae feed on sound hardwood timber, preferring old wood that is still in good condition.
Source: Wikipedia
How to recognize it
The ivory-marked borer (Eburia quadrigeminata) is a North American beetle in the long-horn family Cerambycidae.
Source: Wikipedia
Size
Adults measure between about 12 and 25 mm (0.5 to 1 in) in length.
Source: Wikipedia
Where it lives
It occurs in North American habitats.
Source: Wikipedia
What it eats
The larvae develop in sound hardwood timber, feeding on old, non-rotting wood.
Source: Wikipedia
Where it comes from
It is native to North America.
Source: Wikipedia
Where it is found in the US
Recorded in 16 of 51 states and DC. Most records: Kentucky, Pennsylvania, Texas, Kansas, South Carolina, Ohio, Alabama, Virginia.
Darker = more records. Counts are museum and citizen-science records, not population size.
Source: GBIF
Status: native in North America; native in Canada. Source: iNaturalist
Months it is reported in the US
Source: GBIF
More photos
Questions people ask
What do the larvae eat?
The larvae feed on old hardwood timber that is still in good condition.
Source: Wikipedia
Same family (Cerambycidae)
House LonghornHylotrupes bajulusCan damage your home
Asian Longhorned BeetleAnoplophora glabripennisDamages trees, gardens or crops
Red Milkweed BeetleTetraopes tetrophthalmus
White-spotted SawyerMonochamus scutellatusCan damage your home
Red Pine Longhorn BeetleStictoleptura rubra
Spotted Longhorn BeetleRutpela maculataSources
- Wikipedia: https://en.wikipedia.org/wiki/Eburia_quadrigeminata
Look it up elsewhere: GBIF · iNaturalist · BugGuide · ITIS · Wikipedia
Text written 2026-10-27 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-27.