Chaeteessidae
- Pronunciation
- /kee-tee-ESS-ih-dee/
- Category
- Taxonomy
- Singular
- Chaeteessidae
Definition
A of praying mantises (order ) containing the single extant Chaeteessa, native to South America. The family is regarded as the most basal and earliest-diverging lineage among living mantises, retaining plesiomorphic traits that reflect the ancestral mantis condition. Fossil genera are known from Paleogene deposits in Eurasia and North America, indicating a formerly broader geographic distribution.
Etymology
From Chaeteessa, the type (Greek chaite 'hair' + essa, perhaps related to 'being' or 'essence'), + -idae suffix.
Example
The Brazilian Chaeteessa filata, sole living representative of Chaeteessidae, lacks the specialized foreleg spination seen in more derived , supporting its placement as sister to all other extant mantises.
Related Terms
Usage Notes
Chaeteessidae is frequently cited in phylogenetic studies of as the critical outgroup for understanding character evolution within the order. The 's relictual distribution—extant only in South America versus widespread Paleogene fossils—illustrates the contraction of early mantis lineages following the Cretaceous-Paleogene transition.