KEY TO SUB-ORDER Wing
with three or more
cells
a
no V-shaped seam with two cells
some of
MOSQUITO-LIKE DIPTERA.
V-shaped seam on chest point
wing long and narrow
Wing
I.
-
-
PAGE
TiPULlD.E.
II.
Rhvphid^k.
6.
culicid.e.
s.
DiXID.E.
lO.
Bibionid.e.
zS.
Blepharocerid.e.
20.
MVCETOPHILID.B.
20.
Chironomid-B.
to.
Cecido.mvid.k
21.
.
wing broad
the veins from cell to edge forked
veins covered with scales
veins not covered with scales
veins not forked
Wing
with one
cell
-
.
.
.
.
with irregular net-like veins on the edge
with forked veins from
few veins only
Wing
-
with only few veins
cell to
wing narrow, with no
the hintiniost forked
^Ving with hardly any veins, except on front edge
W^ing with many veins
edge
-
-
-
several forked
(5)
distinct cell
.
-
Si.MUi.iiD.E.
23.
PSYCHODID^.
S.
(5)
