Ictinogomphus, Cowley, 1934

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 : 2319-2320

? Ictinogomphus species undetermined

( Figure 5 (a, b))

? Ictinogomphus Cowley, 1934 : Prokop and Fikáček 2007, p. 210, fig. 1

Material

SMMG SaT 532, collection of Senckenberg Naturhistorische Sammlungen Dresden , Saxony, Germany .

Age and outcrop

Early Oligocene (Rupelian), Seifhennersdorf ( Saxony, Germany) ( Figure 1 ), inter-bedded brownish diatomite within the magmatic complex, equivalent of the Loučeň Formation (see Walther and Kvaček 2007).

Description

Distal two-third of a hyaline fore wing, about 29.2 mm long, 9.4 mm wide; distance between nodus and pterostigma 11.5 mm, between pterostigma and wing apex 3.2 mm; pterostigma 5.7 mm long, 1.14 mm wide, covering six cells; pterostigmal brace oblique; three rows of cells in postdiscoidal area between triangle and posterior branch of MA; MA and IR2 both with a very distinct diverging posterior branch; 12 postnodal cross-veins, not aligned with postsubnodal cross-veins; two rows of cells between MA and RP3/4 near posterior wing margin; four rows of cells between MP and CuA along posterior wing margin; five rows of cells between CuA and posterior wing margin.

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 5.?Ictinogomphus species indet. (Lindeniidae), (A) Photograph of specimen under film layer of ethyl alcohol SMMG SaT 532 (Senckenberg Naturhistorische Sammlungen Dresden coll., Germany); (B) line drawing of fore wing. Scale bar represent 5 mm.