1914.] NATIUAL S^elENTES OF l'llir,Al)KI-lMI I A. o8.> 



the very similar microccllula); basal deflection of Cu, just liefore the 

 fork of M, ecll IkI .U, small, the outer defleetiim of .1/^ and eross-veiu 

 m subequal. 



Abdomen i)r()\vnisli yellow, sternites yellow. IlypoiJVjiiuin with 

 tlie pleurites rather long, slender with ratiier abundant long pale 

 hairs, the dorsal appendage flattened (PI. XXVI, figs. 19,20), tri- 

 angular, the l)ti,se narrowed, the tip truncate, chitinized along the 

 margin, at the apex finely denticulate; ventral appendage shorter, 

 at the tip l)earing a chitinized hook that is directed caudad and 

 outward: gonapophyses sharp-pointed, ehitinized, decussate. 



Holotype, cT, Colorado. 



Allotype, 9, Beulah, X. Mex., alt. <S,()()i) feet, .\ugust (T. D. A. 

 Cockerell). 



Differs from all of the described .Vmerican speeies except E. 

 microcellula sp. n., in the small closed cell 1st .1/,. From inicrocellula 

 it can be easily separated by the male genitalia. 

 Erioptera (Erioptera) microcellula sp. n. 



Very .similar to E. lucia in all general features, but the male genitalia 

 are conspicuously different. The pleurite.s are stouter and bear an 

 irregular appendage .shaped as in the figures (Pi. XXVI, fig.s. 16, 17 

 and 18). The ventral pleural appendage is not shown in the drawings; 

 it consists of a cylindrical fleshy lobe, luirrower at the base, very 

 densely covered with long pale hairs. The gonapophyses seen from 

 beneath are long chitinized hooks, slightly curved inward but their 

 tips not meeting, along the sides with numerous ap])ress(>d teeth. 



The wing-venation is sho^vn in PI. XX\T, fig. 14. 



Male, length, 4.8 mm.; wing, 6.8 mm. 

 ' Hol(ityi)e, cf. Colorado. 



Subgeuua E.MPim.V (isit-ii Suckcii. 

 1869. Empeda Osten .'Safken; Mon. Dipt. .\. .Ajii., vol. 4, p. 183. 

 Erioptera (Empeda) alicia ^p. u. 



Body coloration light yellow without darker markings; cell 1st M, 

 closed. 



Female, length, '.i.r> nnn.; wing, 4.9 nun. 



Rostrum light yellow, palpi brown. .\ntenn:E with the basal 

 segments light yellow, flagellar segments light brown. Head light 

 yellow. 



Thorax light yellow without darker markings, the pleura' of a 

 lighter shade than the dorsum. Halteres light lirown. Legs, coxse 

 and trochanters yellow, femora brown, more yellowish at the ba.se. 



