Exechia unimaculata ( Zetterstedt, 1860 )

Kjaerandsen, Jostein, 2005, A review of fungus gnats in the tribe Exechiini (Diptera, Mycetophilidae) from the J. W. Zetterstedt collection at the Museum of Zoology in Lund, Sweden, Zootaxa 856, pp. 1-35 : 27

Exechia unimaculata ( Zetterstedt, 1860)

Mycetophila unimaculata Zetterstedt, 1860: 6565

Exechia unimaculata ; Lundström 1909: 44, figs 123, 124 & 125

Exechia unimaculata ; Lundström 1913: 313, figs 15 & 18

Material. Holotype ( Fig. 7 ) female [SPM­005220, without coloured tag, labelled: M.

unimaculata Zett. n./p. Ψ Tärna.] – Sweden: LY, Tärna, July 1856, leg. Holmgren. This species is together with Exechia macula Chandler, 2001 the only Palaearctic species of Exechia Winnertz, 1863 with a central dark spot on the wings. Hence, although the holotype is a female the association to the male as first undertaken by Lundström (1913) seems unproblematic. The female of Exechia macula differs in the shape of the genitalia as illustrated by Lundström (1911).

Figures

FIGURE 7. Female holotype of Exechia unimaculata (Zetterstedt, 1860) – A. Terminalia dorsal view. – B. Terminalia ventral view. – C. Terminalia lateral view. Bars = 0.2 mm.