NO. 2281. A REVISION OF CHA LCID-FLIES— PHILLIPS AND EMER Y. 455 



Propodeiim coarsely rugose, Avith a distinct median groove. 



Petiole about twice as long as broad ; about the same length as hind 

 coxae and- granulose; slightly constricted just back of anterior mar- 

 gin, which is slightly enlarged. 



Legs: Knees, front tibiae, and distal half of front femora brown- 

 ish, remaining parts black. 



Antennae : Flagellum with pedicel shorter than head and thorax 

 combined. Scape as seen in lateral profile about same width through- 

 out and about 8 times as long as broad, exclusive of base ; no sliouldcr 

 distally; about same width or narrower than first flagellar joint, 



Tyye-localztv — Charlottesville, Virginia. 



Type— Cfit. No. 21759, U.S.N.M. 



Described from many females reared in cages under artificial 

 conditions and from specimens reared from stems of species of Fes- 

 tuca collected at Penn Yan, New York, Youngstown. Ohio, and 

 Staunton, Virginia. 



This species makes conspicuous liardened enlargements or galls in 

 the second to fourth internode from the base of the plants. It breeds 

 only in species of Festuca and is normally thelyotokous, males rarely 

 occurring. 



HARMOLITA VAGINICOLA Doane. 



Plate 41, fig. 3; plate 43, fig. 13; plate 46, fig. 13. 



Isosoma vaginicolum Doane, Journ. Econ. Ent., vol. 9, No. 4, p. 39S, Aug. 

 1916. 



Female. — Praescutum rugulose. Pronotal spots small, occupying 

 about one-half or less of the anterior dorsal margin of prothorax. 



Propodeum with a distinct, very broad, shallow, margined, me- 

 dian, longitudinal groove. Groove broadest near center; marginal 

 carinae are frequently interrupted ; floor of groove with an occasional 

 ruga in the anterior one-third to one-half; posteriorly usualh- quite 

 rugose; propodeum rugose laterad of the groove. No distinct spi- 

 racular carinae. Fimbria prominent. 



Abdomen longer than head and thorax combined ; segment 2 about 

 one-fifth the length of the abdomen exclusive of 1 ; 4, 5, G, and 7 are 

 subequal, though 4 is usually longer than 6. 



Legs : Knees, distal half of upper and two-thirds of lower face of 

 front femora, and front tibiae testaceous; basal half of front femora, 

 middle and hind femora, and tibiae black, though occasionally the 

 middle and hind tibiae appear slightly fuscous. 



Antennae : First funicle plus ring-joint distinctly longer than pedi- 

 cel. All of funicle and club joints distinctly longer than broad ; the 

 club slightly broader than the 3 preceding joints. Scape brownish. 



Species medium in size. 



Male. — Unknown. 



Eedescribcd from many females reared in cages under artificial 

 conditions ; from specimens reared from galls in wheat stubble that 



