Zoniagrion exclamationis

Exclamation Damsel

(c) Garth Harwood, some rights reserved (CC BY) · licence

Family: Coenagrionidae · Class: Insecta · Order: Odonata

Zoniagrion exclamationis (Exclamation Damsel) is a California animal in the Coenagrionidae family.

The Exclamation Damsel is a small, narrow-winged damselfly in the family Coenagrionidae. As with most damselflies, this species likely measures between 25-40 millimeters (1.0-1.6 inches) in total length, though specific morphometric data for this species has not been documented in available literature. The common name suggests distinctive markings that may resemble an exclamation point, but detailed descriptions of coloration and identifying features are lacking in current scientific documentation. This species has an extremely restricted range, occurring only in the San Francisco Bay Area of California (BugGuide). Specific county records and precise distribution boundaries have not been comprehensively documented. The limited range classification suggests this may be one of California's most geographically restricted odonate species. Habitat requirements for the Exclamation Damsel remain poorly documented. Like other members of the family Coenagrionidae, this species likely requires freshwater aquatic environments for larval development, with adults found near ponds, streams, or wetlands. The specific vegetation associations, water chemistry preferences, and microhabitat requirements have not been studied or reported in available literature. Life history and ecological information for this species is essentially undocumented. Most damselflies undergo incomplete metamorphosis, with aquatic nymphs developing in freshwater before emerging as flying adults. Adult flight periods, mating behaviors, prey preferences, and reproductive ecology have not been described for Z. exclamationis. The lack of observational data may reflect both the species' restricted range and limited field study attention. No formal conservation status has been assigned to the Exclamation Damsel at federal or state levels. The species does not appear on current U.S. Fish and Wildlife Service species lists or California Department of Fish and Wildlife special status species inventories as of December 2025. However, the apparently restricted Bay Area distribution raises potential conservation concerns. Urban development pressure in the San Francisco Bay region may pose threats to suitable habitat, though specific population trends and threat assessments have not been conducted. The lack of recent survey data makes it difficult to assess current population status or conservation needs. The limited scientific documentation for this species represents a significant knowledge gap in California's odonate fauna. Systematic surveys of Bay Area wetlands and aquatic habitats would be valuable for documenting current distribution, population status, and habitat requirements. Additionally, morphological and genetic studies could help clarify taxonomic relationships within the genus Zoniagrion and confirm species boundaries.

Data from The California Species Project — 14,000+ California species with verified data from CNPS, CDFW, USFWS, and more.