Page:Mosquitoes, gnats, craneflies, midges and flies of the northern states (IA mosquitoesgnatsc00knobe).pdf/13

 Family chest, live in

TIPULID/C.

5.

Craiiefiies.

Easily recognized by the V-sliaped seam on the upper

Gnats.

and the very long fragile legs. Their larvLL' are grub-like, gray, brown or white, and rotten wood, mould, earth or fungi, on leaves or in the water, feeding on water-plants.

between the

wiiitjs

KEY TO THE Observe



If ihe lirst

edge;

and

length-vein from the edge of the wing turns if this

second vein,

If the first length-vein if this

second vein

And

if the

at

the point runs into the edge of the wing

third vein,

With spurs if

the thinl vein

at its

end into the next vein, and does not connect with the (y!f^. a. ) CtetiofJiora an< Tifula

wing, turns into the next vein

at the point of the



runs into the edge of the wing and there connects by a cross-vein with the next vein; and ( fiff.

b)



-

branching from the middle of the second vein runs with two ends into the edge

With no spurs Or,

TIPULID.E.

at

at the

the end of shank

end of sh.ank

branches again

With no spurs

at

-

.and

-

runs with three ends into the edge

y

fig. c)

-

-

h)



Limnobina. Cyllmliotomiiia.



the end of shank

{jii:'-

Eiioplerina.

Ptychopterimt. end of shank, and a long snout wing, where the third If the cross-vein connecting the second vein with the first is before, nearer the point of the I. imnofhilinii 3.nt Aiiisometimz. . vein branches from the second (/o-. i): Oi if the cross-vein connecting the second vein with the lirst is behind, nearer the shoulder of the w-ing, where the

With spurs

at the

,

third vein branches

from the second {Jig. c):

-

(11)

-

-

Amiilopiim