Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Upcoming Events

Giving Tuesday, November 30. Please consider a gift to BugGuide!

BugGuide is a National Moth Week Partner. How to add your National Moth Week 2021 photos. July 17-25.

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

National Moth Week 2020 photos of insects and people.

Photos of insects and people from the 2019 BugGuide Gathering in Louisiana, July 25-27

Discussion, insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Previous events

Minute Pirate Bug - probably Orius tristicolor - Orius tristicolor

Minute Pirate Bug - probably Orius tristicolor - Orius tristicolor
Fullerton Arboretum, Fullerton, Orange County, California, USA
February 2, 2007
Size: 2-3mm
Orius insidiosus is a commercially sold thri*ps eater. This guy was on composite near the center, while a thri*ps was towards the outside edge of a petal. Ignoring the thri*ps, this bug kept winding through the petals, then I found out what he was after - apparently a female who couldn't care less.

Images of this individual: tag all
Minute Pirate Bug - probably Orius tristicolor - Orius tristicolor Minute Pirate Bug - Orius tristicolor Minute Pirate Bug - Orius tristicolor

has to be Orius tristicolor (White 1879) indeed
Moved from Orius.

Thanks =v=

Moved from Minute Pirate Bugs.

Orius vs. Orius
O.insidiosus, according to pest control dealer and according to USDA/Wikipedia;
O.tisticolor according to Britannica and Shennan Lab;

I noticed that you can find both spp. also labeled with the opposite name, but "tristicolor" sure applies better to this one, and it is said to be more common in western states.

Thanks, Boris.
I'm thinking O. tristicolor now, too.

Orius insidiosus
I read in Eric's guide (Kaufman Field Guide) that insidiosus is only found East of the Rocky Mountains. There are four other species in this genus that are on the west coast, but I don't know what they are..

To be on the safe side, I 'softened' the reference.
This was my second post on this insect; the first had info about the ID. At that time, I was convinced it was O. insidious, but don't recall why at this point. O. tristicolor was another possibility.

Commercial shipment of O. insidious for pest control does raise some questions. The supplier reports that they ship to all fifty states. The arboretum does not use insecticides, but I'm unsure about more natural controls. Thanks for your interest, Lynette.

I wonder who regulates to the shipping of insects to non-native areas?

Dunno. You'd think USPS, minimally.
Decades ago, California was really strict about produce arriving in the state, whether by plane, private car, or whatever. That seems to be over now.

In the nineties, the state had a very ineffective PR program using roadside signs to address such matters. Today, they don't seem to care about the once-feared Medfly, but are interested in something called, I think, Oriental fruit fly. Not so PC, eh?

Hey, we have people at Bug Guide mailing critters to researchers in other places, right? Who regulates that?

It varies
You have to have a permit if you're mailing live insects. Pest insects are especially tough to get permission to send around.

Comment viewing options
Select your preferred way to display the comments and click 'Save settings' to activate your changes.