Spiketail
Guides
Cordulegaster
Golden-ringed Spiketails, Goldenrings, Spiketails
Cordulegaster is a genus of large dragonflies in the family Cordulegastridae, commonly known as golden-ringed dragonflies or spiketails. The genus contains approximately 30 described species distributed across North America, Europe, and Asia. Members are characterized by their distinctive yellow or golden ring markings on the abdomen and, in females, prominent spikelike ovipositors used for inserting eggs into stream substrates. Several species are habitat specialists associated with forested streams and are of conservation concern, including C. heros, which is protected under the EU Habitats Directive.
Cordulegaster bilineata
brown spiketail
Cordulegaster bilineata, commonly known as the brown spiketail, is a dragonfly species in the family Cordulegastridae. It occurs in North America and is classified as Least Concern by the IUCN with a stable population. The species was described by Carle in 1983. Like other spiketails, females possess a prominent ovipositor that gives the group its common name.
Cordulegaster diadema
Apache spiketail
Cordulegaster diadema, commonly known as the Apache spiketail, is a dragonfly species in the family Cordulegastridae. Adults typically measure 74–88 millimeters in length. The species ranges from the southwestern United States through Mexico to Costa Rica. Females possess a prominent ovipositor that gives the species its common name 'spiketail'.
Cordulegaster dorsalis
Pacific spiketail
Cordulegaster dorsalis, commonly known as the Pacific spiketail, is a dragonfly species in the family Cordulegastridae. Larvae inhabit intermittent headwater streams and typically require three years to reach maturity, emerging as adults during July and August. The species shows evidence of sediment microhabitat partitioning, with smaller larval instars associated with finer-grained organic sediments.
Cordulegaster erronea
tiger spiketail
Cordulegaster erronea, the tiger spiketail, is a large, uncommon dragonfly in the family Cordulegastridae. It is a habitat specialist requiring small, pristine, spring-fed forest streams with muck bottoms and overhanging vegetation. The species has a long larval period estimated at 3-4 years and a brief adult flight period of approximately 2-3 weeks in early summer. Radio-telemetry studies in New Jersey have revealed limited adult movement, with individuals typically remaining within 100-200 meters of natal streams and showing strong site fidelity.
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sayi
Say's spiketail
Cordulegaster sayi, commonly known as Say's spiketail, is a dragonfly species in the family Cordulegastridae. It is endemic to the United States. The species belongs to a genus characterized by prominent spikelike ovipositors in females, a trait referenced in the common name 'spiketail.'