210 ENTOMOLOGICAL NEWS f Jllly, '22 



Tipula amoenicornis sp. n. 



General coloration dull yellow ; antennae elongate, bicolorous, the 

 basal enlargement of the segments dark brown, the remainder yellow : 

 wings with a strong yellowish brown tinge, cells C and Sc more sat- 

 urated ; abdomen reddish orange with a conspicuous black subterminal 

 ring. 



$ .- Length 12.5 mm. ; wing 12.3 mm. Frontal prolongation of the 

 head brownish yellow, the palpi concolorous, with the terminal seg- 

 ments darker. Antennae elongate, if bent backward extending to 

 beyond the base of the abdomen; scapal segments obscure yellow; 

 flagellar segments bicolorous, obscure yellow, the basal enlargement of 

 each segment dark brown except at the extreme base; terminal flagel- 

 lar segments broken. Head obscure brownish yellow. 



Mesonotum dull brownish yellow without markings, the posterior 

 sclerites more testaceous. Pleura yellowish testaceous. Halteres pale, 

 the knobs faintly darker. Legs with the coxae and trochanters light 

 yellow ; remainder of the legs pale yellowish brown, only the tarsi 

 passing into dark brown. 



Wings with a strong yellowish brown tinge, the base and cells C 

 and Sc more saturated ; stigma small, oval, brown ; a conspicuous oblit- 

 erative area before the stigma, reappearing across the base of cell 1st 

 M2 ; veins dark brown. Venation : Rs short, arcuated beyond mid- 

 length ; cell 2nd Rl very small; parallel-sided; tip of R2 preserved; 

 cell A/1 about twice the length of its petiole; cell 1st .1/2 narrowed 

 distally, ;;; being about two-thirds the basal deflection of A/1 +2; m-cu 

 elongate. 



Abdomen conspicuous reddish orange ; conspicuous black areas on 

 lateral margins of tergites two, three and four ; a conspicuous black 

 ring including all of segment seven and all of eight except the broad 

 posterior margin of the eighth sternite. Male hypopygium with all 

 the sclerites separate, the ninth pleurite large. Caudal margin of the 

 ninth tergite with a shallow V-shaped notch, the mesal margins of the 

 lobes densely hairy ; ventro-median portion of the tergite at the apex 

 of the notch produced into a pendulous, bilobed appendage that is 

 densely hairy. Pleural appendage flattened, the apex narrowly mar- 

 gined with black, at the base on the outer face a conspicuous blackened 

 lobe that is microscopically spinulose. Ninth sternite extensive, the 

 median portion filled with membrane, at the caudal margin of which 

 hangs a very conspicuous, median, elongate, slender, hairy lobe that is 

 split at the apex into two small, digitiform appendages. Eighth sternite 

 unarmed. 



Habitat : Argentina. Holotypc, <3 , San Pedro de Colalao, 

 Tucuman, altitude 2500 meters, January 27, 1921 (V. Weiser). 



