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5
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7
8
9
10
11
12
13
refer Key to genera
1. Occiput NOT distinctly pale ventrally and dark dorsally; wing with dark brown areas (NOT completely hyaline); setae of mesonotum extremely short … go to 12
refer Key to genera
1. Occiput NOT distinctly pale ventrally and dark dorsally; wing with dark brown areas (NOT completely hyaline); setae of mesonotum extremely short … go to 12
12. Hind femur and tibia of irregular shape, bent along length; cell r4+5 broad apically (NOT tapered apically); M meeting R4+5 at about 90 degrees (NOT at an acute angle) … Physocephala
refer Key to genera
12. Hind femur and tibia of irregular shape, bent along length; cell r4+5 broad apically (NOT tapered apically); M meeting R4+5 at about 90 degrees (NOT at an acute angle) … Physocephala
refer Key to species
1. Wing brown anteriorly only (NOT extensively brown); discal cell never entirely brown; smaller species, length 6-13mm (NOT 15-16mm) … go to Step 2
refer Key to species
1. Wing brown anteriorly only (NOT extensively brown); discal cell never entirely brown; smaller species, length 6-13mm (NOT 15-16mm) … go to Step 2
[I estimate the body length at about 10.5mm … see image of ruler for my post hoc method]
estimating size ... post hoc
Foolishly, I forgot to measure the fly directly while I had her in the hand. Next best thing was to retrieve and measure the plant stem she was perched on!
refer Key to species
2. Frons and antennal foveae partially dark brown (NOT frons & face entirely yellow); wing with some dark brown areas posterior of R4+5 … go to Step 3
refer Key to species
2. Frons and antennal foveae partially dark brown (NOT frons & face entirely yellow); wing with some dark brown areas posterior of R4+5 … go to Step 3
refer Key to species
2. Frons and antennal foveae partially dark brown (NOT frons & face entirely yellow); wing with some dark brown areas posterior of R4+5 … go to Step 3
refer Key to species
3. Antennal foveae with only a small brown spot on each side of carina; hind femur dark brown on distal half, fore and mid femora yellowish brown (NOT all femora completely or partially dark brown); wing with dark brown of cell r2+3 not extednding posterior of petiole … nigrotestacea
refer Key to species
3. Antennal foveae with only a small brown spot on each side of carina; hind femur dark brown on distal half, fore and mid femora yellowish brown (NOT all femora completely or partially dark brown); wing with dark brown of cell r2+3 not extending posterior of petiole … nigrotestacea
[mid femora without dark markings]
refer Key to species
3. Antennal foveae with only a small brown spot on each side of carina; hind femur dark brown on distal half, fore and mid femora yellowish brown (NOT all femora completely or partially dark brown); wing with dark brown of cell r2+3 not extending posterior of petiole … nigrotestacea
[mid femora without dark markings]
3. Antennal foveae with only a small brown spot on each side of carina; hind femur dark brown on distal half, fore and mid femora yellowish brown (NOT all femora completely or partially dark brown); wing with dark brown of cell r2+3 not extending posterior of petiole … nigrotestacea