66 Psyche [April 



42. Scutellum bordered with velvet black: palpi black; legs mostly yellow; 3 dor- 



socentrals, 4 acrostichals. Eur.*, Alaska, Que.*, B. C.*, Vane,*. Mass.*, 



N. H., Vt.*, N. Y., N. J., Pa.*, El.*, Mont.*, Wyo.*, Id.*, Wash.*, (Mich., 



Wise, Or., Tenn., Kans. Aldrich) (Fig. 14). . .Minettia lupulina Fabricius. 



Scutellum entirely gray-pollinose; palpi yellow 43 



43. Abdomen black, cinereous pruinose, base of segments 3, 4, 5, black-fasciate; 



head yellow, upper part of occiput and vertex black; legs mostly black. 



Nev.; Pine Lake, So. Cal. Aldrich; Wash.* Minettia caesia Coquillett. 



At mest a brownish fascia on those segments; head mostly black in ground 

 color 44 



44. Legs yellow, front of femora, a basal ring and apex of tibiae sometimes darker; 



face yellowish with central U-shaped brown spot and facial grooves black. 



D. C Minettia magna Coquillett. 



Legs black; face uniformly overlaid with gray pollen. Mass.* 



Minettia cana sp. now 



45. Species whose wings are marked or spotted in some way or other 46 



Species with wings not at all ornate, except sometimes at very base, or with 



uniform infuscation 63 



46. One or both cross- veins alone with brown clouding; usually 4 dorsocentrals. . . 47 

 Costal margin before submarginal cell as well as one or both cross-veins brown; 



generally 3 dorsocentrals 51 



2, 3 and 4 veins tipped with a brown dot, cross-veins clouded and third vein 



with one or two additional spots 61 



With numerous confluent black dots and an apical spot surrounded by eleven 



dots; opaque gray spotted with brown on head, thorax and abdomen; legs 



yellowish, femora with two rings, tibiae with one; halteres black. D. C, Tex. 



Minettia stictica Loew. 



47. Arista long-plumose; thorax with four brown vittae; face with black central 



spot; front with ocellar mark; base of antennae black; abdominal segments 

 tri maculate; hind tibiae ringed. Nicaragua, Tex. 



Sapromyza picticornis Coquillett. 



Arista short-plumose or pubescent; thorax yellowish; face and front uniformly 

 yellow; antennae yellow; abdomen not spotted; tibiae not ringed 48 



48. Thorax opaque, dusted; 3 dorsocentrals, 6 uniform acrostichals; arista nearly 



bare; front longer than broad; hairs of lower facial ridge large; mesopleuroe 



setulose. 111.*; Kans. Aldrich Minettia ordinaria sp. nov. 



Thorax subshining; 4 dorsocentrals, 4 acrostichals, the middle rows setiform; 

 mesopleurse bare 49 



49. Arista short-pubescent; front broader than long; brown of cross-veins suf- 



fused 50 



Arista plumose; front longer than broad; clouds of cross- veins blackish; ma- 

 crochaetae strong. 111.*; Or. Aldrich Minettia nubila sp. nov. 



50. Last ventral segment d 1 dilated or with two strong black teeth, lamellae 



rounded and black-pilose; abdominal segments margined with long setae; 

 ocellar bristles closer together than width of front ocellus. Neb.; Mass.*, 

 Vt.*, 111.*, Ind.*, (Mich., Wise, S. Dak., Kans. Aldrich) 

 Sapromyza bispina Loew. 



