Western Conifer Seed Bug Leptoglossus occidentalis Heidemann, 1910Adventive    Synonyms: Pine Seed Bug, WCSB.
Kingdom Animalia   >   Phylum Arthropoda   >   Class Insecta   >   Order Hemiptera   >   Family Coreidae   >   Genus Leptoglossus   

Status:

A western U.S. species that has spread east across the continent since the 1950s. Interestingly, it was introduced to Europe in 1999 and is now common there.

Description:

Compare Leaf-footed Pine Seed Bug. Dull reddish brown overall with alternating pattern of dark and white along rear of abdomen. Note shape of tibia dilation (about equal on outer and inner). Antennae roughly as long as the rest of its body.

Where to find:

Feeds on conifers during spring and summer. Often seeks shelter around buildings in late fall and winter.

Relationships:

Relies on coniferous trees.

There are 55 records in the project database.

View images at BugGuide

View taxon at iNaturalist

View taxon at NatureServe

Search Google Images


[View seasonality details]
GA ALWAFR CL MO HO BA BC HA CE PG AA CVCHSM KEQA CN TA DOWISOWO 
A Western Conifer Seed Bug in Worcester Co., Maryland (10/18/2013). Photo by Scott Housten. (MBP list)

Western Conifer Seed Bug in Montgomery Co., Maryland (10/15/2014). Photo by Steve Scholnick. (MBP list)

A Western Conifer Seed Bug on Assateague Island, Maryland (11/9/2013). Photo by Bill Hubick. (MBP list)

A Western Conifer Seed Bug in Carroll Co., Maryland (10/9/2020). Photo by Barbara Speckart. (MBP list)

A Western Conifer Seed Bug in Harford Co., Maryland (10/13/2015). Photo by Dave Webb. (MBP list)

Western Conifer Seed Bug in Worcester Co., Maryland (10/13/2013). Photo by Scott Housten. (MBP list)

A Western Conifer Seed Bug in Frederick Co., Maryland (6/11/2014). Photo by Mark Etheridge. (MBP list)

A Western Conifer Seed Bug in Baltimore Co., Maryland (10/14/2015). Verified by Brandon Woo/BugGuide. Photo by Emily Stanley. (MBP list)

A Western Conifer Seed Bug in Cecil Co., Maryland (10/1/2013). Photo by Bill Keim. (MBP list)

A Western Conifer Seed Bug in Prince George's Co., Maryland (10/18/2016). Verified by Ross Hill/BugGuide. Photo by Barbara Thurlow. (MBP list)

A Western Conifer Seed Bug in Harford Co., Maryland (10/19/2019). Photo by Dave Webb. (MBP list)

A Western Conifer Seed Bug in Worcester Co., Maryland (9/23/2013). Verified by Margarethe Brummermann/BugGuide. Photo by Scott Housten. (MBP list)

Western Conifer Seed Bug in Montgomery Co., Maryland (3/26/2020). (c) Jane Hartman, all rights reserved. Photo by Jane Hartman. (MBP list)

Western Conifer Seed Bug in Garrett Co., Maryland (11/3/2022). (c) maryland adventure babe, some rights reserved (CC BY-NC). Photo by maryland_adventure_babe via iNaturalist. (MBP list)

Western Conifer Seed Bug in Caroline Co., Maryland (11/6/2016). Photo by Wayne Longbottom. (MBP list)

A Western Conifer Seed Bug on Assateague Island, Worcester Co., Maryland (11/14/2015). Photo by Bill Hubick. (MBP list)

A Western Conifer Seed Bug in Worcester Co., Maryland (10/12/2014). Photo by Scott Housten. (MBP list)

Western Conifer Seed Bug in Howard Co., Maryland (10/29/2019). (c) smuller, some rights reserved (CC BY-NC). Photo by Sue Muller. (MBP list)

A Western Conifer Seed Bug in Howard Co., Maryland (6/31/2014). Photo by June Tveekrem. (MBP list)

A Western Conifer Seed Bug in St. Mary's Co., Maryland (11/6/2016). Photo by Tyler Bell. (MBP list)

Western Conifer Seed Bug in Baltimore City, Maryland (3/21/2020). Photo by Kirsten Johnson. (MBP list)

Western Conifer Seed Bug in Baltimore City, Maryland (3/21/2020). Photo by Kirsten Johnson. (MBP list)


View All Images

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

View Bibliography