Neurocordulia (Collins & McIntyre, 2017)

Ware, Jessica L., Hulick, Carl Patrick, Newton, Lacie, Kohli, Manpreet K., Tolman, Ethan R., Goodman, Aaron, Beatty, Christopher D., Guralnick, Rob, Abbott, John C., Frandsen, Paul B., Soto-Centeno, J. Angel & Bybee, Seth, 2025, Bringing Shadowdragons to light: Neurocordulia (Anisoptera: Corduliidae) systematics, International Journal of Odonatology 28, pp. 1-15 : 12

A key to the species of Neurocordulia

1. Wing amber in colour; only two rows of veins in the space between the Cu vein in the hindwing and the trailing edge of the wing; male cerci with ventromedial spine; nymphs with pronounced dorsal hooks: Yes .............. N. xanthosoma

1’. No ........................................................................... 2

2. Presence of a cross vein in the mid basal space; mesotibia and protibia with a long keel that runs half the length of the tibia; male cerci without ventral tubercle; large erect dorsal hooks in nymph: Yes .............................. N. obsoleta

2’.No ........................................................................... 3

3. More than 2 rows of cells in space between the

Cu vein and trailing edge of hindwing and swollen area anterior to the vulvar lamina with pointed, triangular humps; Male cerci with small ventromedial spine: Yes, and nymph with short, blunt dorsal hooks ........................................... N. michaeli 3’.More than 2 rows of cells in space between the

Cu vein and trailing edge of hindwing and swollen area anterior to the vulvar lamina with rounded humps, male cerci with small tubercule ventromedially or no tubercule ........................................ 4

4. Wing with dark spot at the base of the wing extending across part of the anal veins and with a deep rectangular notch in vulvar lamina of female; Yes ............................................................. 5

4’. No, and with fewer than 4 cells afer the pterostigma ............................................................ 6

5. Dark patch in hind wing extending to triangle; Yes, and no ventral tubercle on male cerci, very blunt dorsal hooks that are very short .. N. yamaskanensis

5’. No, and small ventral tubercle on male cerci right adjacent to the distal swelling,very pointed dorsal hooks in nymph ................................. N. virginiensis

6. Swollen humps anterior to vulvar lamina almost as big as flaps of the vulvar lamina; female cerci not longer than 1.6 mm, male cerci with small ventromedial tubercule;large,very hooked dorsal hooks in nymph; Yes ........................ N. alabamensis

6’. No, and male cerci lacking ventral spine or tubercule, female cerci at least 2.4 mm long; nymph with frontal horn on head, dorsal hooks pronounced and midsized ............................ N. molesta