Specimen of Exechia, photographed by L. Weitten.

Belongs within: Mycetophilidae.

Exechia is a genus of fungus gnats characterised by the presence of a basal bristle on the hind coxa, and the cubital vein forking more distally than vein M (Tonnoir & Edwards 1927). Vein R4+5 may or may not be curved caudally at the apex; those species in which it is curved have been separated in the past as a genus Exechiopsis (Vockeroth 1981).

Characters (from Tonnoir & Edwards 1927): Anepisternal and pteropleural bristles absent; hind coxae with a fairly strong bristle at the base; empodia absent or rudimentary; hind tibial comb indefinite or absent; base of cubital fork beyond that of M.

<==Exechia [incl. BoraceomyiaV09, BrachydicraniaTE27, Exechiopsis Tuomikoski 1966V09, P86]
    |--E. attritaV81
    |--E. biseta Edwards in Tonnoir & Edwards 1927TE27
    |--E. clypeataP76b
    |--E. cornutaP76b
    |--E. dentataP76b
    |--E. exiguaP76b
    |--E. festivaP76b
    |--E. filata Edwards in Tonnoir & Edwards 1927TE27
    |--E. frigidaJP76
    |--E. hiemalis (Marshall 1896) [=Brachydicrania hiemalis]TE27
    |--E. howesi Edwards in Tonnoir & Edwards 1927TE27
    |--E. indecisaJP76
    |--E. intersectaP76b
    |--‘Exechiopsis’ januarii Lundstroem 1913P86
    |--E. lackschewitzianaP76b
    |--E. landrockiP76b
    |--E. lepturaP76b
    |--E. novaezelandiae Tonnoir in Tonnoir & Edwards 1927TE27
    |--‘Exechiopsis’ nugaxV81
    |--‘Exechiopsis’ (Exechiopsis) perita Plassmann 1986P86
    |--E. praedita Plassmann 1976P76a
    |--E. pseudopulchella (Lundstroem 1912)P76b, P86 [=Exechiopsis pseudopulchellaP86]
    |--E. seducta Plassmann 1976P76a
    |--E. spinuligeraJP76
    |--E. thomsoni Miller 1918 (n. d.)TE27
    `--E. unguiculataP76b

*Type species of generic name indicated


[JP76] Joost, W., & E. Plassmann. 1976. Mycetophiliden aus dem Zentralkaukasus (Diptera: Mycetophilidae). Senckenbergiana Biologica 57 (1–3): 67–68.

[P76a] Plassmann, E. 1976a. Vier neue Mycetophiliden aus der ökologischen Station Messaure/Schweden (Diptera: Mycetophilidae). Senckenbergiana Biologica 57 (1–3): 73–76.

[P76b] Plassmann, E. 1976b. Vierter Nachtrag zu der Mycetophiliden-Sammlung des Senckenberg-Museums Frankfurt am Main (Diptera; Mycetophilidae). Senckenbergiana Biologica 57 (1–3): 77–79.

[P86] Plassmann, E. 1986. Neun neue Pilzmücken aus der Westpaläarktis (Diptera, Nematocera, Mycetophilidae). Spixiana 9 (2): 143–150.

[TE27] Tonnoir, A. L., & F. W. Edwards. 1927. New Zealand fungus gnats (Diptera, Mycetophilidae). Transactions and Proceedings of the New Zealand Institute 57: 747–878.

[V81] Vockeroth, J. R. 1981. Mycetophilidae. In: McAlpine, J. F., B. V. Peterson, G. E. Shewell, H. J. Teskey, J. R. Vockeroth & D. S. Wood (eds) Manual of Nearctic Diptera vol. 1 pp. 223–246. Research Branch, Agriculture Canada.

[V09] Vockeroth, J. R. 2009. Mycetophilidae (fungus gnats). In: Brown, B. V., A. Borkent, J. M. Cumming, D. M. Wood, N. E. Woodley & M. A. Zumbado (eds) Manual of Central American Diptera vol. 1 pp. 267–278. NRC Research Press: Ottawa.

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