Diagnosis. Small to medium-sized (6.0-8.0 mm) fungus gnats. Head and eyes small; antennae occasionally with long hairs; mouthparts not elongated. Thorax hump-backed, small. Wing membrane clear (Symmerus ) or with cross-band (Ditomyia ), Sc ending free, M connected with C by cross-vein just basal of cross-vein r-m; radial sector with three branches. Abdomen long and narrow.
Biology. Larvae live either in ligneous Polyporaceae (bracket fungi) or in dead but unrotten wood. Adults are mainly found in forested areas where they can be swept in low vegetation or collected in Malaise traps.
General references. Hutson et al. (1980 [keys]), Mamaev & Krivosheina (1988a [catalogue]), Vockeroth (1981 [general, key to genera]).
References to the local fauna. Beuk et al. (1994).
How to quote this page: Beuk, P.L.Th., 2001. Family Ditomyiidae. In: Beuk, P.L.Th. (Ed.): Checklist of the Diptera of the Netherlands, https://diptera-info.nl/news.php?fam=Ditomyiidae (date accessed: 21/11/2024).
NL: 2
B: 3
D: 2
UK: 3
World: 90
DITOMYIIDAE
Ditomyia Winnertz, 1848
fasciata (Meigen, 1818)
N; first recorded in original checklist (Beuk, 2002c)
Note 1
Symmerus Walker, 1848
= Plesiastina Winnertz, 1852
annulatus (Meigen, 1830)
N
= flavus (Zetterstedt, 1851)
= apicalis (Winnertz, 1852)
Notes
Note 1
Material examined: LIMBURG: Wolfhaag (bij grenspaal 3, 1 [m], 1 [f], pupa: coll. 19.iii.1994, e.l. 2.iv.1994, J.C. van der Sande [BEUK]), det. P.L.Th. Beuk.
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