Diagnoza

Distinctly smaller than the type species (distance between nodus and stigma only 11 mm, instead of 14–15 mm), only of 75% the size; lower number of only 7–8 postnodal and postsubnodal crossveins (instead of 10–12 in the type species); pterostigma more elongate and slender (ratio of length to width is 4.9, instead of Ø 4.0 in the type species); pseudo−IR1 originates distinctly distal of pterostigma.

Porównanie

Wing venation and dimensions of the preserved part of this fossil dragonfly forewing are very similar to the corresponding part in the other known specimens of Eumorbaeschna jurassica (compare Bechly et al. 2001). Important diagnostic similarities are the narrow posttrigonal area, the presence of two straight supplement veins Rspl and Mspl with only a single row of cells behind them, the undulate veins MA, RP3/4, IR2, and RP2, the widened area between IP2 and RP2, two lestine oblique veins, and an elongate and strongly braced pterostigma. Consequently, the attribution to the genus Eumorbaeschna is well established. The diagnostic differences are subtle, but nevertheless sufficient to warrant the status as a distinct new species.

Autekologia

Carnivorous.

Występowanie geograficzne

Only locus typicus.

Zasięg czasowy

Only stratum typicum.

Materiały muzealne

ZPAL J1/O−B1, stored in Institute of Paleobiology of the Polish Academy of Sci−
ences, Warszawa, Poland.

Literatura