Aeshnidae, Leach, 1815

Prokop, Jakub, Pecharová, Martina & Nel, André, 2016, New Cenozoic dragonflies from the Most Basin and Středohoří Complex volcanic area (Czech Republic, Germany), Journal of Natural History 50, pp. 2311-2326 : 2318

Aeshnidae genus incertae sedis

Genus and species undetermined

( Figure 4 (a, b))

Material

Specimen No. ZD 282 (midpart of hind wing preserved in light brown claystone), deposited in the collections of the Bílina Mine Enterprises, Bílina, Czech Republic.

Age and outcrop

Early Miocene (Burdigalian), Most Basin, Most Formation, Holešice Member, Delta Sandy Horizon, Bílina mine near Bílina ( Figure 1 ), Czech Republic (see Kvaček et al. 2004).

Description

Mid part of a hind wing, fragment c. 22 mm long and 13.9 mm wide; eight preserved postnodal veins, not well aligned with subpostnodal crossveins; four visible antenodal crossveins not aligned with corresponding crossveins between ScP and RA; four preserved crossveins between RA and RP basal of subnodus; well defined and curved Mspl with four rows of cells between it and MA; two rows of cells between MA and RP3/ 4 in distal part of this area; one visible Bq crossvein; oblique crossvein ‘ O ’ just distal of base of RP2; Rspl well defined and slightly curved; several secondary posterior branches of IR2 between it and Rspl.

Figures

Figure 1. Map of Cenozoic dragonfly localities in the Krušné hory piedmont basins and volcanic areas. Abbreviations: I, Cheb and Sokolov basins; II, Most Basin; III, České středohoří Mts. and Doupovské hory Mts.; 1, Želénky near Duchcov; 2, Bílina mine; 3, Kundratice near Litoměřice; 4, Seifhennersdorf; 5, Libouš mine; 6, Jehličná near Sokolov; 7, Marie Majerová mine near Sokolov; 8, Pochlovice near Kynšperk n. Ohří.

Figure 4. Genus and species indet. (Aeshnidae), (A) line drawing of fore wing; (B) photograph of specimen ZD 282 (Bílina Mine Enterprises, Bílina coll., Czech Republic). Scale bars represent 5 mm.