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The European species are uniform in
appearance, small (2.0-5.0 mm), grey dusted, plump flies with
thickened legs, especially in males. Wing with a dark spot at
junction of R1 and mostly with dark patches along transverse veins.
The larvae have the anterior spiracles shifted dorsad, though not so
conspicuously as in Agromyzidae Fallén, 1823 (Krivosheina
1981). The
adults occur locally, mostly in primeval or natural-type forests,
from lowlands to montane altitudes, whilst some prefer forest
margins or alder and willow stands alongside rivers; Odinia
boletina (Zetterstedt, 1848) is regularly found on
bracket fungus Fomes fomentarius. The larvae live under the
bark of deciduous and (rarely) coniferous trees, mostly in the
galleries of wood-boring insects (Coleoptera, Diptera, Lepidoptera)
with ambrosia fungi. Younger larvae are most probably saprophagous
or mycetosaprophagous inquilines, but older ones are predators of
puparia and sick larvae, and at least some are capable of
cannibalism.
The Odiniidae is a small family comprising two subfamilies, currently with 59
described species. Only the nominate subfamily is represented in
Europe, with fifteen species in two genera (Carles-Tolrá
2007 and one species not included there – Odinia rossi
MacGowan
& Rotheray, 2004). Seven species have been recorded in the Czech Republic
by Máca
(1997).
Since then, only a few faunistic records have been added.
Since the ECV1 (Máca 2006),
the species number remains unchanged in the Czech Republic and has increased
by one in Slovakia; eight
species are listed in the present checklist:
eight
in the Czech Republic (seven in Bohemia,
seven
in Moravia) and six in
Slovakia.
Papp (1998)
published an account of the Palaearctic species. A survey of basic data on this family,
also including data from the Czech Republic, is recently under preparation by
S. D. Gaimari and W. N. Mathis. However, there is no
recent detailed monograph of this family dealing with the European
species. A primarily faunistic
paper on the species then known from the Czech Republic and
Slovakia was published by Máca (1978).
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