San Francisco Forktail Damselfly vs Costa Rican Firefly

Side-by-side species comparison

Attribute San Francisco Forktail Damselfly Costa Rican Firefly
Scientific Name Ischnura gemina Aspisoma ignitum
Order Odonata Coleoptera
Family Coenagrionidae Lampyridae
Size 2.5-3 cm 8-12 mm
Habitat Ponds & Lakes Forests
Diet Predators Predators
Regions United States Central America, Costa Rica
Conservation Endangered Least Concern

San Francisco Forktail Damselfly

A tiny damselfly restricted to a few freshwater ponds near the San Francisco Bay coast. It is threatened by urban encroachment and invasive plants.

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Did You Know?

This species is nearly identical to the common Pacific forktail and can only be distinguished by close examination.

Costa Rican Firefly

A neotropical firefly with a dark body and reddish pronotum bearing a median dark stripe. It produces a bright yellow-green flash and is common in lowland tropical forests of Central America.

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Did You Know?

Central American firefly diversity is thought to rival that of Southeast Asia, though far fewer species have been formally described.