Fire Department. Welcome to the web pages of the Redwood City Fire Department proudly serving the cities of Redwood City and San Carlos. Here youâll find information about the services we provide to our communities, including fire prevention, operations, communications, emergency services, paramedic services, and more. Visit the links to the left for information on how we work to protect life and property throughout the communities of Redwood City and San Carlos.
Red Imported Fire Ant (Solenopsis invicta) The red imported fire ant (RIFA) is a small reddish brown ant from South America . There are six known species of fire ants (Solenopsis spp.) in the United States, three of which are found in Arizona. These three species are the southern fire ant (S. xyloni), and two species of desert fire ant (S. aurea and S. amblychila).
Carpenter ants vary in size based on their role in the colony and genus, but generally are much larger than any of the numerous varieties of common household ants. Among the most common species of black carpenter ant in North America, Campontonus pennsylvanicus, sizes vary between 5/16 inch (0.8 cm) to 1 inch (2.54 cm).1  Winged queen: The queen is the largest ant in the colony, and can be as long as 1 inch (2.54 cm). Winged queen: The queen is the largest ant in the colony, and can be as long as 1 inch (2.54 cm). 2  Winged reproductives, males and females: 3/4 inch (1.9 cm). 3  Major workers: Among black carpenter ants, they range from 3/8 to 1/2 inch (1 cm to 1.3 cm).