Wing of female of Physocephala texana from McAlpine (1981, fig. 53) Key to Families - Adults,
Manual of Nearctic Diptera
, Ottawa, p.89-124, (1981)
[1]. Abbreviations are as follows:

Veins:

A1 = Anterior (or 1st) anal vein
A1+CuA2 = vein formed by fusion of veins A1 and CuA2
CuA1 = 1st anterior branch of the cubitus
CuA2 = 2nd anterior branch of the cubitus
M1 = 1st (posterior) branch of the medial vein
R1 = 1st branch of the radial vein
R2+3 = branch formed from fusion of the 2nd and 3rd branches of the radial vein
R4+5 = branch formed from fusion of the 4th and 5th branches of the radial vein
Sc = subcosta

Cells:

Wing of female of Zodion obliquefasciatum from Smith and Peterson (1981, fig. 13) Conopidae,
Manual of Nearctic Diptera
, Ottawa, p.749-756, (1981)
[1].

Wing of female of Robertsonomyia palpalis from Smith and Peterson (1981, fig. 12) Conopidae,
Manual of Nearctic Diptera
, Ottawa, p.749-756, (1981)
[1].

Wing of female of Dalmannia nigriceps from Smith and Peterson (1981, fig. 11) Conopidae,
Manual of Nearctic Diptera
, Ottawa, p.749-756, (1981)
[1].

Wing of female of Stylogaster neglecta from Smith and Peterson (1981, fig. 10) Conopidae,
Manual of Nearctic Diptera
, Ottawa, p.749-756, (1981)
[1].

Wing of female of Physoconops fronto from Smith and Peterson (1981, fig. 9) Conopidae,
Manual of Nearctic Diptera
, Ottawa, p.749-756, (1981)
[1].

Wing of female of Physocephala texana from Smith and Peterson (1981, fig. 8) Conopidae,
Manual of Nearctic Diptera
, Ottawa, p.749-756, (1981)
[1].

Wing of Conops. From Comstock (fig. 44) The wings of insects,
, Ithaca, N.Y., (1918)
[2].

Wing of an unknown species of thick-headed fly (Conopidae).