Polyctenidae

Definition

A family of small, wingless, obligate ectoparasitic true bugs (Hemiptera: Cimicoidea) commonly known as bat bugs. Unlike the superficially similar cimicid bat bugs (Cimicidae: Cimicinae), polyctenids are highly specialized for permanent residence on bat hosts, with morphological adaptations including reduced eyes, strong claws for clinging to fur, and asymmetrical genitalia. The family exhibits tight coevolution with chiropteran hosts, with different genera typically restricted to specific bat families or species.

Etymology

From Polyctenes (type genus, from Greek poly- 'many' + ktenos 'comb') + -idae (family suffix)

Example

Specimens of Hesperoctenes fumarius collected from molossid bats in Neotropical caves show the extreme host specificity characteristic of Polyctenidae, with populations on different bat species exhibiting distinct morphological and genetic divergence despite geographic overlap.

Synonyms

• bat bugs (restricted usage; also applied to cimicid bat bugs)

Related Terms

• Cimicoidea
• Cimicidae
• Cimicinae
• Ectoparasite
• host specificity
• Coevolution
• Hemiptera
• Heteroptera

Usage Notes

Distinguished from cimicid bat bugs (Cimicidae) by permanent ectoparasitism versus intermittent feeding; polyctenids complete their entire life cycle on the host. The family is rarely encountered in collections due to specialized habitat requirements and host dependence. Five extant genera are recognized: Adroctenes, Eoctenes, Hesperoctenes, Hypoctenes, and Polyctenes.