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Sycamore Seed Bug (Belonochilus numenius)


Detailing the identifying qualities of the Sycamore Seed Bug, including physical features and territorial reach.


 Updated: 10/4/2017; Authored By Staff Writer; Content ¬©www.InsectIdentification.org







  Sycamore Seed Bug  
Picture of Sycamore-Seed-Bug


Newly introduced to Europe, the Sycamore Seed Bug feeds on the seeds of its namesake and may become a pest in urban areas.





Native to North America, the Sycamore Seed Bug lives and eats on sycamore (also called plane) trees. True to their name, they feed on the trees seeds, which ruins the fruit around it and limits the spreading of fertile seeds to other areas. How they arrived in Europe is unknown, but they have been noticed in numbers in parks and walkways lined with plane trees. They may become a nuisance over time, creating a need to spray trees. They are able to survive cold winters as eggs, though in warmer parts of their range, they may take shelter under the bark of their host tree.

Adults are active from mid-spring through autumn and 3 to 4 generations can be produced in a single year.








Sycamore Seed Bug Information



Category: True Bug
Common Name: Sycamore Seed Bug
Scientific Name: Belonochilus numenius


Taxonomy Hierarchy



 Arrow graphic Kingdom: Animalia
  Arrow graphic Phylum: Arthropoda
   Arrow graphic Class: Insecta
    Arrow graphic Order: Hemiptera
     Arrow graphic Family: Lydaeidae
      Arrow graphic Genus: Belonochilus
       Arrow graphic Species: numenius

Size, Identifying Tags and Territorial Reach



Size (Adult, Length):
Identifying Colors: brown, tan


North American Territorial Reach (Though Not Limited To): Alabama; Arkansas; Connecticut; Delaware; Florida; Georgia; Illinois; Indiana; Iowa; Kansas; Kentucky; Louisiana; Maine; Maryland; Massachusetts; Michigan; Minnesota; Mississippi; Missouri; Nebraska; New Hampshire; New Jersey; New York; North Carolina; North Dakota; Ohio; Oklahoma; Pennsylvania; Rhode Island; South Carolina; South Dakota; Tennessee; Texas; Vermont; Virginia; West Virginia; Wisconsin; New Brunswick; Newfoundland and Labrador; Nova Scotia; Ontario; Prince Edward Island; Quebec

A Note About Territorial Reach: Keep in mind that an insect's reach is not limited by lines drawn on a map and therefore species may appear in areas, regions and/or states beyond those listed above. Insects are driven by environmental factors, food supplies and mating patterns and do not nescessarily work within hard-and-fast territorial lines like we humans do.

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