Termitidae

Definition

The largest family of termites, commonly called the higher termites, comprising approximately 2,125 described species. Members are distinguished by a highly compartmentalized hindgut that lacks flagellated protozoans (characteristic of lower termites) and instead harbors bacteria and archaea for cellulose digestion. This symbiotic shift enables diverse diets including wood, grass, leaf litter, fungi, lichen, feces, humus, and soil; roughly 60% of species are specialized soil-feeders. Termitidae exhibit the most derived morphological and behavioral traits among termites, including complex fungus cultivation in Macrotermitinae and sophisticated chemical defense in Nasutitermitinae.

Etymology

From Termes (type genus) + -idae (family suffix)

Example

Macrotermes bellicosus, a mound-building species in subfamily Macrotermitinae, maintains elaborate fungus gardens in its nest architecture—an agricultural symbiosis unique to Termitidae among termites.

Synonyms

• higher termites

Related Terms

• Isoptera
• Blattodea
• lower termites
• Rhinotermitidae
• Termopsidae
• hindgut symbionts
• fungus-growing termites
• soil-feeding termites
• Macrotermitinae
• Nasutitermitinae

Usage Notes

Taxonomic placement has shifted historically: traditionally placed in Isoptera, but modern phylogenetics often treats Isoptera as epifamily within Blattodea (cockroaches). The higher/lower termite distinction is functional rather than strictly phylogenetic, though Termitidae monophyly is well-supported. 'Higher' refers to derived traits, not elevation or social complexity. Contrast with 'lower termites' (Rhinotermitidae, Termopsidae, etc.) which retain flagellate protists. Soil-feeding (termitophagy) is overwhelmingly concentrated in this family.