The statistical examination confirmed that the males and females of C. balcanica have significantly more antenodal crossveins, crossveins in the discoidal cell and cubito-anal crossveins, and more cells in anal-loops than do those of C. s. ancilla. This can be used to discriminate the occasional heterochromatic females of C. balcanica from the regular heterochromatic females of C. s. ancilla.


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Societas Internationalis Odonatologica

Ž.R. Adamović, & S.T. Vijatov. (1996). Morphometric examination of Calopteryx balcanica Fudakowski, 1930 and C. splendens ancilla Selys, 1853 (Zygoptera: Calopterygidae). Odonatologica, 25(2), 109–118.