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Clearly people are seeing this bug in their houses as it gets cooler out. They keep posting to the insect identification help communities wanting to know what it is. In the interest of helping out at least the people who read this blog, here's a rerun from January 2006 for you.



Urban species #013: Western Conifer Seed Bug Leptoglossus occidentalis

In the spring, this bug (a "true" bug as the entomologically inclined sometimes say) lays its eggs on the needles of a pine, spruce, or fir tree. The babies feed on the various softer parts of the tree, and when grown feed on the seeds. As summer comes to a close, they look for a warm place to spend the cold months. Houses and other heated buildings are favored winter hiding places.

This, of course, is where they run afoul of humans. The WCSB (not a tv station, but the abbreviation used by the Massachusetts Audubon Society) is a harmless insect, but it can inspire alarm. First of all, it's unfamiliar to many people, especially on the east coast. As its name suggests, it's a western animal, but has been drifting eastward during for the past hundred years or so. "In 1956 the WCSB was reported in Iowa and in 1990 several were found in New York State," according to Mass Audubon's Linda Cocca. By 1985 it was in New England. For another thing, it sounds rather menacing: it buzzes in flight, like a bee or a wasp. And finally, like its relatives the stink bugs, it produces an odor in defense. Personally, I find their smell to be not unpleasant--somewhere between sour apple and pine scent. But the WCSB doesn't bite, eat human food (or anything else inside the house), or bore into wood. If only all insect invaders were so polite.





Date: 2008-10-13 10:58 pm (UTC)
From: [identity profile] mas69ter.livejournal.com
That looks like the little guy i took pictures of on Friday making a walk towards the basement of my house. I was gonna ask you what it was, now I know 'cause without even asking, you make a post like you're psychic.

Date: 2008-10-13 11:45 pm (UTC)
From: [identity profile] urb-banal.livejournal.com
hey, i showed this one to my son and said, doesn't this look Japanese, anime to you?

and he said, "What's that supposed to mean?"

so I shrugged. Still, it does look like a bug the Japanese would base an anime character/monster on, but what do I know...so it's North American huh? occidentalist, is that like "occidental" isn't that a word for people who come from the far east.

This is where my lack of education, shrinking brain and dyslexia make it impossible for me to carry on conversations any more...

Date: 2008-10-14 02:10 am (UTC)
From: [identity profile] aliog.livejournal.com
OMG!!! I wondered what the hell those giant bugs were!!! I had a feeling they were polite...good thing I haven't tried to kill any of them...

Date: 2008-10-14 02:50 am (UTC)
From: [identity profile] wandererrob.livejournal.com
Ah yes, I got these my last winter in my aparetment in Woburn. Never the 3 years previous though. I think I was one of those "oh my god, what the hell are these things and why are they in my house?" folks until learning about them. Then I'd just catch them and shoo them out the window.

Date: 2008-10-14 05:23 am (UTC)
From: (Anonymous)
I wanted to let you know that I really enjoy your blog, especially your 365 urban species posts. I live in a rural area, but I love seeing the same species I love in the forest being cultivated for human enjoyment.

Date: 2009-09-08 08:55 pm (UTC)
From: (Anonymous)
thank you for being here with this info...I had one in my house and nearly jumped out of my skin when I saw it....I thought for sure it would bite me or worse one of my children...when I killed it I smelled this funny pine smell and thought it was a spruce bug and I know they can bite...but...now I know they are harmless...needless to say I am still going to sqush them...yuck

western seed bug

Date: 2009-12-02 03:43 am (UTC)
From: (Anonymous)
thanks now i know what kind of bug it is and they have a strong sour apple scent to them

Date: 2010-01-14 08:36 pm (UTC)
From: [identity profile] madrona.livejournal.com
This is what my husband found on me when we woke up this morning. Thank you! (He seems interested in making it a new pet...)

does it wave with one of its legs?

Date: 2010-02-13 12:57 am (UTC)
From: (Anonymous)
i find these in my daughters room often. only her room for some reason. they wave with one leg. thanks, was wondering about this bug.

Re: does it wave with one of its legs?

Date: 2010-02-13 01:10 am (UTC)
From: [identity profile] urbpan.livejournal.com
I've never heard about or observed that behavior, but if everything else fits then that's your bug!

found a conifer seed bug in my room today

Date: 2010-03-14 02:13 am (UTC)
From: (Anonymous)
I am keeping a journal of all the bugs I find. My first bug was found tonight, in my bedroom when I went to go to sleep. It was called a Western Conifer Seed Bug. Thank you for posting this information so I could look it up on the computer. From Jenna, age 6 1/2.

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