Automatic system for continuously monitoring digging volume of red imported fire ants (Hymenoptera: Formicidae) in the laboratory.

Repellency of callicarpenal and intermedeol against workers of imported fire ants (Hymenoptera: Formicidae).

Callicarpenal and intermedeol are two insect-repellent terpenoids isolated from leaves of American beautyberry (Callicarpa americana L.; Verbenaceae) and Japanese beautyberry (Callicarpa japonica Thunb.). The repellency of these two terpenoids against workers of red imported fire ants, Solenopsis invicta Buren, black imported fire ants, Solenopsis richteri Forel, and a hybrid of these two speci...

Microencapsulated Bait: Does It Work With Red Imported Fire Ants, Solenopsis invicta (Hymenoptera: Formicidae)?

The preference of red imported fire ants, Solenopsis invicta, for microencapsulated (MC) pyriproxifen based corn grit baits (P-bait) was conducted in laboratory and field conditions. A positive correlation between the microencapsulation rate and water tolerance ability of P-bait was observed. A 20% increment of water tolerance ability of P-baits was observed when P-baits were microencapsulated ...

Solenopsis Invicta Virus (sinv-1) Infection and Insecticide Interactions in the Red Imported Fire Ant (hymenoptera: Formicidae)

Sublethal Effect of Imidacloprid on Solenopsis invicta (Hymenoptera: Formicidae) Feeding, Digging, and Foraging Behavior.

There is increasing evidence that exposure to neonicotinoid insecticides at sublethal levels impairs colonies of honeybees and other pollinators. Recently, it was found that sublethal contamination with neonicotinoids also affect growth and behavior of ants. In this study, we exposed red imported fire ants, Solenopsis invicta Buren, to sublethal dosages of dietary imidacloprid and investigated ...

Host Specificity in Two Additional Pseudacteon Spp. (diptera: Phoridae), Parasitoids of Solenopsis Fire Ants (hymenoptera: Formicidae)

We tested the host specificity of two South American Pseudacteon phorid flies, P. obtusus Borgmeier and P. borgmeieri Schmitz, on North American colonies of the red imported fire ant, Solenopsis invicta Buren, and the tropical fire ant, S. geminata (F.). Sequential host specificity tests conducted in the laboratory indicated that P. obtusus was highly specific to S. invicta . In individual tria...