Two-lined Chestnut Borer Agrilus bilineatus (Weber, 1801)  

Relationships:

Per BugGuide: "Larvae are a major mortality agent of stressed oaks (Quercus), particularly red oaks (Muzika et al. 2000); adults feed on chestnut blight spores (Cryphonectria parasitica)." Also: "Substantial injury and mortality of American chestnut caused by A. bilineatus was noted as early as 1891; A. bilineatus was purportedly responsible for the death of 75% of the chestnut trees in Fairfax County, VA in 1893. Although largely ignored in the intervening decades, the beetle has been documented as a cause of oak mortality. (Muzika et al. 2000)" (More at BugGuide).

There are 4 records in the project database.

Search Google Images

GAALWAFRCLMO HOBA BCHA CEPGAA CVCHSMKEQACNTADOWISOWO
A Two-lined Chestnut Borer in Baltimore Co., Maryland (6/24/2017). Determined by V. Belov/BugGuide. Photo by Emily Stanley. (MBP list)

A Two-lined Chestnut Borer collected in Harford Co., Maryland (8/27/2018). Photo by Josh Emm. (MBP list)

A Two-lined Chestnut Borer collected in Harford Co., Maryland (8/27/2018). Photo by Josh Emm. (MBP list)

A Two-lined Chestnut Borer with an Emerald Ash Borer for size comparison in Harford Co., Maryland (8/27/2018). Photo by Josh Emm. (MBP list)

A Two-lined Chestnut Borer found at Fort Smallwood Park in Anne Arundel Co., Maryland (6/1/2019). First MBP record for Anne Arundel Co. found on the beach among a surprising density of Emerald Ash Borers. Photo by Bill Hubick. (MBP list)


View All Images

Use of images featured on Maryland Biodiversity Project is only permitted with express permission of the photographer.

View Bibliography