Wednesday, December 14, 2011

Crazy ant update

Rasberry or Caribbean crazy ants have been confirmed in
Travis County near the Burnet and Travis county
boundary. (Texas AgriLife Extension Service photo)
According to a story published yesterday in  AgriLife Today, College Station and Austin have recently been added to the list of county locations with confirmed identifications of the exotic, new crazy ant species, Nylanderia sp. near pubens.  As reported in an earlier post, this means that PMPs should be able to use the expanded Termidor label for perimeter applications of fipronil as ant barriers around homes in Travis and Brazos counties.  The Texas Department of Agriculture automatically extends the Section 18 amendment of the Termidor label when a new county is added to the list of infested counties.

Under the expanded label, Termidor applications may be made three feet up the side of a structure and 10 feet out (the standard label restricts applications to one foot up and one foot out), and may be made two times a year, no less than 60 days apart.  To be legal, however, you must have a copy of the label AND these Section 18 use directions.

This new exotic crazy ant has several common names including the Rasberry crazy ant (in Texas), the Caribbean crazy ant (Florida) and the hairy crazy ant (Louisiana and Mississippi).  A definitive study to confirm whether these ants are in fact the same species has yet to be published, but I suspect that when the dust clears they will all be the same.  A fresh cycle of news stories came out earlier this fall under the name "hairy crazy ant" confusing some people to think that there was yet another invasive ant.

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