Cryptobiotic
Guides
Amblyoponinae
Dracula ants, Vampire ants
Amblyoponinae is an ancient, relictual subfamily of ants characterized by specialized subterranean predatory habits and unique 'Dracula ant' behavior, in which adult workers pierce the integument of their own larvae to imbibe haemolymph. The subfamily contains 13 extant genera and originated in the mid-Cretaceous approximately 107 million years ago. Crown group diversification occurred in the Late Paleocene/Early Eocene. The subfamily exhibits remarkable morphological and behavioral diversity, including convergent evolution of army ant-like behaviors in some lineages and highly plastic caste systems in others.
Hypoponera opaciceps
Granulate Crypt Ant
Hypoponera opaciceps is a small, cryptobiotic ant species in the subfamily Ponerinae. It is widely distributed across the Neotropics, including the Caribbean, Central America, and South America, with records extending to the Galápagos Islands. The species is primarily subterranean or leaf-litter dwelling, making it infrequently observed despite its broad range. Seven subspecies have been described, reflecting considerable geographic variation across its distribution.
Proceratiinae
Proceratiine Ants
Proceratiinae is a subfamily of ants in the poneromorph group, established by Barry Bolton in 2003 when Ponerinae was divided into six subfamilies. It contains three extant genera—Discothyrea, Proceratium, and Probolomyrmex—plus one extinct genus (Bradoponera). Most species are tropical or subtropical with worldwide distribution. These ants are characterized by their cryptobiotic lifestyle, small colony sizes, and specialized predatory habits.
Proceratium
Hairy Curltail Ants
Proceratium is a rare genus of ants in the subfamily Proceratiinae and the type genus of tribe Proceratiini. These ants are distributed across temperate and tropical regions worldwide but are infrequently collected due to their cryptobiotic lifestyle. Colonies are small, typically containing fewer than 200 individuals. Some species are specialist predators of arthropod eggs, particularly spider eggs. The genus is notable for its ability to curl the abdomen dorsally more than 90 degrees relative to the body axis.
Proceratium silaceum
Silaceum-clade Hairy Curltail Ant
Proceratium silaceum is a rare ant species first described by Roger in 1863. It belongs to the Proceratiinae subfamily, a group characterized by cryptobiotic lifestyles that make them infrequently collected. The species has been recorded in South America, with distribution data documented in Brazil. It is part of the P. micrommatum clade within the genus Proceratium.
Pterotermes
Pterotermes is a monotypic genus of drywood termites in the family Kalotermitidae, containing only Pterotermes occidentis. This primitive termite is the largest drywood termite in the southwestern United States deserts and exhibits the simple life cycle characteristic of its family, lacking a true worker caste. Colonies develop entirely within a single piece of timber, making it a cryptic inhabitant of dead desert wood.
Stigmatomma
Dracula ants
Stigmatomma is a genus of ants in the subfamily Amblyoponinae with worldwide distribution. The genus was revived from synonymy with Amblyopone by Yoshimura & Fisher (2012) based on worker mandible morphology. Species are specialized predators with a cryptobiotic lifestyle, inhabiting soil and rotten wood in humid forests.