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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.
dragonfly spiketail habitat-specialist forest-stream radio-telemetry conservation New-Jersey Cordulegastridae Odonata indicator-species headwater-streams metapopulation territorial-behavior crepuscular-activity long-larval-development site-fidelity mature-forest-dependent spring-fed-streams muck-bottom-streams overhanging-vegetation shaded-streams limited-dispersal fragmented-populations pristine-habitat aquatic-nymph ovipositor early-summer-emergence brief-adult-life canopy-use easily-disturbed human-disturbance-sensitive top-predator stream-ecosystem conservation-concern IUCN-Least-Concern stable-population eastern-North-America patchy-distribution localized-populations territorial-males patrolling-behavior oviposition-in-organic-matter specialized-habitat-requirements forest-protection-needed regulatory-protection-insufficient aquatic-insect odonate Anisoptera Cordulegastroidea Selys-1878 tiger-spiketail uncommon-species rare-encounters field-identification-challenge habitat-degradation-threat forest-fragmentation-impact water-quality-dependent perennial-streams seepage-fed-streams adjacent-forest-use movement-ecology home-range-limited natal-stream-fidelity conservation-recommendations mature-forest-buffer stream-corridor-protection headwater-conservation forest-stream-specialist ecosystem-engineer biodiversity-indicator climate-change-vulnerability habitat-loss-sensitivity development-pressure protected-areas-benefit citizen-science-potential natural-history-knowledge-gap research-priority-species monitoring-target population-stability least-concern-status no-immediate-threat stable-IUCN-assessment North-American-endemic eastern-range New-Jersey-study-site detailed-life-history-known radiotelemetry-pioneer-study first-radio-telemetry-for-species movement-study habitat-use-study home-range-estimation conservation-biology-case-study forest-management-implications buffer-zone-requirements stream-protection-needs beyond-stream-corridor-protection 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