Epitheca spinosa
(Hagen, 1878)
robust baskettail
Epitheca spinosa, the robust baskettail, is a of emerald in the Corduliidae. It is found in North America. The species is classified as Least Concern by the IUCN with a stable and no immediate threats to survival. Like other baskettails, it belongs to the 'emerald' group characterized by brilliant green in .
Pronunciation
How to pronounce Epitheca spinosa: //ˌɛ.pɪˈθɛ.kə spɪˈnoʊ.sə//
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Identification
Baskettails are rather generic, non-descript that can be mistaken for the more abundant 'skimmer' dragonflies in the Libellulidae. Both baskettails and other emeralds have brilliant green as . Baskettails tend to have a longer, narrower than skimmers.
Distribution
North America
Seasonality
Baskettails tend to fly in spring and early summer.
Life Cycle
Female baskettails practice exophytic oviposition, meaning they do not land and insert singly into aquatic vegetation, bottom sediments, or mud. Instead, they drag the through the water as they fly, trailing a rope of eggs behind them. The eggs are suspended in a gelatinous fluid that expands in the water. Prior to laying, females put all their eggs in the 'basket' of the subgenital plate. In , the tip of the egg-laden abdomen is held aloft in a distinctive posture. They favor tangles of floating and emergent plant stems as locations for their strings of eggs, which may be several feet long.
Similar Taxa
- Libellulidae (skimmers)Baskettails can be mistaken for the more abundant 'skimmer' , but differ in having brilliant green as and a longer, narrower .
- Epitheca princeps (Prince Baskettail)Similar appearance as congeneric baskettail; differs in being active later in the season (summer rather than spring/early summer for most baskettails).
More Details
Conservation Status
IUCN Least Concern () with stable and no immediate threats to survival.