Systematics
This species was first described as Libellula quadrifasciata, var. 36. isoceles by Muller in 1764. It has since been called Aeshna rufescens and Aeshna chysophthalmus and more recently Anaciaeschna isosceles. It is by this last name that it is referred to in many books. It has since been included into the genus Aeshna and in many books is called Aeshna isosceles: however the original specific name was isoceles. Dijkstra and Lewington (2006) and Boudot JP., et al.. (2009) both call it Aeshna isoceles whereas Askew, R.R. (2004),and earlier books, refer to it as Aeshna isosceles.
Read more about this topic: Aeshna Isoceles