New York Natural Heritage Program
Spatterdock Darner
Rhionaeschna mutata (Hagen, 1861)
Insects
Aeshna mutata Blair Nikula
Family: Darners (Aeshnidae)

State Protection: Not Listed
The species is not listed or protected by New York State.

Federal Protection: Not Listed

State Rarity Rank: S2
A State Rarity Rank of S2 means: Typically 6 to 20 occurrences, few remaining individuals, acres, or miles of stream, or factors demonstrably make it very vulnerable in New York State.

Global Rarity Rank: G4
A Global Rarity Rank of G4 means: Apparently secure globally, though it may be quite rare in parts of its range, especially at the periphery.


Did you know?
The bright sky-blue eyes of the spatterdock darner distinguish it from all similar darners in the eastern states, but the closely related blue-eyed darner (Aeshna multicolor), found in the western states, is nearly identical.

State Ranking Justification [-]
To date, this species has been recorded from just 15 localities in the state. The distribution of these records is widespread and the species' principal habitat, vegetated ponds, pools and bogs (Nikula et al. 2003, Dunkle 2000), is also widespread, but localized. These considerations suggest that existing collection locations are not an accurate representation of the actual number of populations. However, the species is thought to be fairly local in New York and other states, and the apparent preference for fishless ponds with spatterdock may also indicate that the number of undiscovered populations may not be large. It is likely that there are particular qualities such as water depth, bottom substrate type, amount and type of aquatic vegetation, pH, and the absence of certain types of fish, that make some lakes and ponds suitable while others are not suitable. In addition, there are a number of actual or potential threats to the types of waters occupied by this species.

Short-term Trends [-]

Long-term Trends [-]