Fig 3. Infrabuccal cavity. This medial section of an adult 

 fire ant worker head shows an infrabuccal pellet in 

 the infrabuccal cavity. P = pharynx; IBC = infra- 

 buccal cavity; IBP = infrabuccal pellet. 



Fig 4. Enlarged view of infrabuccal cavity and pellet. 



Numerous MB and NMB spores may be seen in the pellet, 

 Arrows point to valves of the orifice of the infra- 

 buccal cavity. 



