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KEY TO SPECIES OF ABLABESMYIA 

 Larva* 



<i I.aliium \vitli hill four teeth. pl.T.i. Hg..~. . .'-!.">. Species from Ithaca, N. Y. 

 mi I.abiiim with live led li 



// Several elaws of Hie posterior feet stouter :ill(l e< >HSpicll< Ulsl.V darker 



colored than ll ..... tilers. pl.T.i. I'm. II. Antennae over three times as 



long as I lie i na i id i hies. . ............................ ;. in i> n i 1 i s 



lih ('laws of posirrior feel all the <ai ..... -nlor 



- Antennae rather short and stout < pl.l'n. lig. 1> less than !.." times 

 as long as Ihe maiidihle; sides of abdomen fringed laterally \vith 

 hairs .................. I' r o < 1 a d i n s a d u in h r a t n s ( q. v.) 



<< Antennae over t \\iee as liuiu' as the mamlihles 



<l Teeth nf lahium of almiit equal length i antennae three tiir.es as 

 long as the mandible, pl.'J". ti_ r .i'> .................. 4. < a r n e a 



</'/ Not as aho\ e 



< .Maiidihle stout at ha-e \\iili disiind tooth near apex ; hasal 

 joint of antenna Mhmit I u o thirds of total length, pl.l'.l, ti.i;s. If. 

 and 17 .............................. '_"_'. 1' a s t u o s a n. sp. 



'< Antenna \\ilh its ha<al joint c.ver three fourths the total length, 

 pl.l'.i. li_ r . 1 ......................... U;. f la vif rons n. sp. 



a S\viiuininir paddle rounded, not sharply notched at apex 



h Trumpet rather elongate, over four times as lon^ as wide; swimming 

 paddle as shown in pi. -Jo. li-. I 



1' i- o e 1 a d i u s a d u in h r a t u s (q. v.) 



bit Trumpet short i pl.T.i. I i _'..". i : swimming paddle as shown on pl.TA 

 flg.4 ........................... I' r o e 1 a d i u s p i n u i s (<j. v.) 



<ni Swimming paddle with l\\ pointed lohes 



li Thoraeic resjiiratory oruan ( trumpet i eL r u r shaped, with very small 

 aperture, pl.l'.t. lij:. 1.", ................................ 0. m o n i 1 i s 



hl> I'.rea tiling or.iran funnel or elnh-shaped 



r r.reathinu' oriran eluh -shaped. pl.T.i. ti^.L'. . 1<>. flavifrons n. sp. 

 rr r.reathiiiL: oriran not of this type 



<l Swimming paddle rather hroad, hut little longer than wide. pi. 10. 

 fig.G. Trumpet as shown in liir.7 .................. 10. d y a r i 



ild Swininiin.i; paddles quite pointed 



' I'addle and hreathing trumpet as shown on pi. 10, figs. 18 

 and 10 .................................... 22. f a s t u o s a 



cc As shown on pi. 20, figs. 7 and 8 ................... 4. c a r n e a 



Imagines 



a Wings clouded (banded or spotted) 

 b Legs nearly uniform in color 



c Wings uniformly spotted with fuscous; fuscous species; the thorax 

 with three dusky stripes; legs yellow; length 4.5 mm. ; female. 

 (=?decedens Walk. ) ................... 1. p i c t i p e n n i s 



cc Smaller paler species; the wings with few large bars or spots 



<? The first fascia of the wing lies distad of the crossvein ; length 

 2^ to 4 nun ., ................... 2. bifasciata 



