248 NORTH AMERICAN ANTHOMYIID FLIES OF GENUS PHAONIA 



This species belongs to the same group as the European 

 alpicola Zetterstedt, chalQinata Pandell, and luguhris ^Meigen. It 

 differs, however, from all of these in one or more characters. 



Phaonia serva (Meigen) 



A nthontyia serva Meigen, Syst. Beschr., 5, p. 86, 1826. 



This very common European species may be readily distin- 

 guished from any of its allies by the characters given in the key 

 to species. In color and habitus it resembles protuherans. 

 Normally there are but three pairs of postsutural dorsocentral 

 bristles present, but sometimes there are four pairs. One pair 

 taken in the White Mountains, by Morrison, which I have before 

 me, have four pairs of postsutural dorso-centrals, l)ut differ in no 

 other manner from normal specimens from Europe and this 

 country. The variation percentage in number of postsutural 

 dorsocentrals is very small, but occasional aberrant examples 

 occur in most species, and to prevent errors in identification, 

 these must be carefully compared with species they resem):)le in 

 other respects, before their description as new species. 



Length, 7.5 to 8 mm. 



I have seen examples of this species from Maine, Massa- 

 chusetts, and New Hampshire. 



Phaonia savonoskii new species 



Female. — Similar to jxrotuberans in color and markings. 



Structurally similar to sei-ixi, distinguishable from it by the bristling of the 

 fore and mid tibia, the former having one or two and the latter two antero- 

 dorsal bristles near middle. 



Length, 9 mm. 



Type.- — Savonoski, Naknek Lake, Alaska, June 1919, (J. S. 

 Hine). 



Type returned to Professor Hine, who collected it on his last 

 trip to the" Mt. Katmai region for the National (reogiaphic 

 Society. Three female paratypes, Healy, Alaska, July 6, 1921, 

 (J. M. Aldrich), [U. S. N. M.]. 



Phaonia caerulescens (Stein) 



Aricia caerulescens Stein, Berl. Knt. Zeitschr., 1S97, ]). 1S7, IMIT. 



This species is readily separated from its allies by the ])luish 

 black color of the abdomen and the characters given in the k(>y 

 to species. The fore tarsi are similar to those of protuherans 



