FAMILY MUSCID.E 391 



47. Palpi short, normal 48 



Palpi very long; stigmatal bristle strong Pselaphephila Becker 



48. Front with intrafrontal bristles in both sexes 50 



Front without intrafiontal bristles 49 



49. Third antennal segment sharply angulate at upper apex; arista dis- 



tinctly elbowed Gonatherus Rondani 



Third antennal segment obtusely angulate or rounded; arista never 

 elbowed Mesamyia Malloch 



50. Acrosticals strong but short, paired '■■Fucellia Desvoidy 



Acrosticals fine, short and irregular Myopina Desvoidy 



51. Pteropleura baref 54 



Pteropleura with hair or bristles 52 



52. Pteropleura with a single bristle Emmesomyia Malloch 



Pteropleura with several hairs 53 



53. Propleura bare Taeniomyia Stein 



Propleura haired on the median portion tEremomyioides Malloch 



54. Eyes bare 55 



Eyes haired Alliopsis Schnabl & Dziedzicki 



55. Propleura bare in the middle 57 



Propleura haired on the median portion 56 



56. Arista bare ' Kingiella Malloch 



Arista distinctly plumose §Anthomyia Meigen 



57. Arista plumose 58 



Arista pubescent or bare 61 



58. Scutellum cinerous, with an opacjue black spot on either side. 



Eustalomyia Kowarz 

 Scutellum without opaque black spot on either side 59 



59. Lower lobe of the squamas conspicuously longer than the upper (28, 



29 ) ^Hydrophoria Desvoidy 



Lower lobe of the squamae not as large as the upper 60 



60. Proboscis elongate and slender, as long as the thorax or nearly so. . . 61 

 Proboscis short and thick, not nearly as long as the thorax 62 



61. Arista pubescent Proboscimyia Bigot 



Arista long plumose Neohylemyia Malloch 



62. Hypopleura haii'ed in front of the posterior spiracle. 



Calythea Schnabl & Dziedzicki 

 Hypopleura bare in front of the posterior spiracle 63 



63. Antei"ior tibiae with an extremely long dorsal bristle at the apical 



fourth in the male and with two or three strong dorsal bristles at 



the apical fifth in the female Anthoniyella Malloch 



Anterior tibiae without such bristles 64 



* Aldrich, 1918, Pioc.-Calif. Acad. Acad. Sci.. viii, p. 160. 



t The jreneia in couplets 51 to 74 comprise the Anthomyina;. Keys to the Eastern species 

 will be found in Huckett, Cornell Uni. Agr. Exp. Sta. Mem. 77. 

 4 Malloch, 1920. Can. Ent. liii, p. 76. 

 § Malloch, 1924, Ann. Map:. Nat. Hist., xiv, p. 267. 

 II Malloch, 1920, Can. Ent. liii, i). 103. 



