Page:Mosquitoes, gnats, craneflies, midges and flies of the northern states (IA mosquitoesgnatsc00knobe).pdf/7

 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.