34G CONNECTICUT GEOL. AND NAT, HIST. SURVEY [Bull. 



P. {Fed icla) margarita Alex. (Fig. 40. B). 



1929. Pedieki m<irgarifa Alexander: Bull. Brooklyn Ent. Soc 24: 

 300-302. 



Closely related to aJhivifta. difierin*: in the small size and nature 

 of win<r-pattern. Median praescutal stripes entirely pale reddish 

 brown. Knobs of halteres dusky. Wingrs relatively narrow, the 

 dark markincrs correspondingly reduced in width. $. L. about 20- 

 22 mm.: w. 20-22 mm. ?. L.' about 24 mm.: w. 21.5-22 mm. 



(Late July-Aug.) N. B., Me., N. H.. Vt., Mass., N. Y., sonthw. to Tenn. (Great 

 Smokies). 



Subgenus Nasiternella Wahlgren 



1881. Nasiterna Wallengren; Ent. Tidskr.. 2:179: (nee Xasiterna 



AVagler, 1832). 

 1904. Xa.s}ter)ieUa Wahlgren : Arkiv for Zoologi.. 2, Xo. 7 : 4. 



The subgenus Nasiternella includes the single species hyperhorea. 

 The female, first detected in 1933 on Mt. Washington, is subapterous. 



Pedicia {XasiterneUa) hyperhorea ((). S.) 



1801. Aiaaloph hyperhorea Osten Sacken; Proc. Acad. Nat. Sci. Phil- 

 adelphia, 18G1 : 292. 



Figs. — Alexander, Proc. Acad. Nat. Sci. Philadelphia, 1916, pi. 28, fig. 50 (wing) ; 

 1916. Alexander, Cfls. N. Y., 1, pi. 42, fig. 182 (wing) ; 1919. 



General coloration gray, praescutmn with broad brown stripes. 

 Antennae brown. Head gray. Halteres elongate, pale. Wings whit- 

 ish, handsomely clouded and marbled with brown, including a heavier 

 costal series. Cell 1st i¥o normally closed, rarely open by atrophy of 

 m. Abdomen dark brown, segments narrowdy ringed caudally with 

 paler, i. L. 8-9 mm.: w. 10.5-12 mm. 9. L. about 8 mm.: w. 3.2 

 mm. 



(Late June, Julv) Labr.. westw. to Can. N. W. Terr., southw. to Mt. Washington, 

 N. H. (28U0'-42dU'), Vt. (Killington Peak) and N. Y. ( Adirondacks, Mt. Marcy, 

 Mt. Whiteface). (Hudsonian). 



Subgenus Tricyphona Zetterstedt 



1838. Tricyphona Zetterstedt: Ins. Lapponica, Dipt., p. 851. 

 1856. Amalopis Haliday; Ins. Brittanica, Dipt., 3, add., p. xv. 



The various local species of Tricyphona are about intermediate in 

 size between the local species of the subgenus Pedicia and the forms 

 included in the genus Dicranota. The flies of our species all have 

 cell 1st 3/0 closed, except in abnormal specimens. The adults occur in 

 swampy and bogg}' areas, a few species (as veimeilis) along rocky 

 mountain streams: others (as auripennis) found resting on the wet 

 faces of vertical cliffs. The larvae are found in Avet earth. 



Key to Species 



1. Wings with a conspicuous brown costal darkening; r-m connecting with A'.s- 



before fork ; a short element R^^^^t. (Fig. 40, C) 2 



