Zorotypidae

Definition

The sole family of the insect order Zoraptera (angel insects), comprising small, soft-bodied, cryptic insects found in leaf litter, decaying wood, and under bark. Members exhibit pronounced polyphenism: winged, pigmented, eyed individuals capable of dispersal and wing-shedding (as in termites), versus wingless, pale, eyeless individuals that remain in stable microhabitats. All possess distinctive nine-segmented, moniliform (beaded) antennae and chewing mouthparts.

Etymology

From Zoraptera (the order, from Greek zoros 'pure' + apteros 'wingless') + -idae (family suffix)

Example

Zorotypidae includes the genus Zorotypus, with species such as Zorotypus hubbardi found in dead wood and leaf litter in the southeastern United States, where populations typically consist mainly of eyeless, wingless individuals with only a small proportion of winged dispersers.

Related Terms

• Zoraptera
• Polyphenism
• Apterous
• dealation
• cryptic fauna
• moniliform antenna

Usage Notes

Zorotypidae is the only family in its order, making it monotypic at the family level; some classifications recognize subfamilies (Zorotypinae, Spiralizorotypinae). The family is notable for its relictual distribution and uncertain phylogenetic placement, historically allied with termites, psocids, or roaches but now often placed near Paraneoptera or as a separate lineage.