Abstract
Cryptotermes mobydicki sp. nov. is described from the soldier caste. The soldier is unique among all Cryptotermes species worldwide for its very narrow, elongate head capsule terminating with an extended frontal process. The new species constitutes the sixteenth Cryptotermes species for South America. Our phylogenetic reconstruction indicates that C. mobydicki sp. nov. is most closely related to the Neotropical and Central American C. mangoldi, C. parvifrons, C. cymatofrons, C. rotundiceps, and C. cavifrons.