SUBFAMILY CHRYSOMYINAE 101 
one or two (usually only one) anteroventral bristles near 
basea, eNearctipitel susie. idee ¥: ol. lieadtees. ol. e 
i on Apaulina aenea (Shannon and Dobroscky), p. 185 
Male with parafaciale opposite lunule and distance between 
vibrissae in the proportion 1.5:2.2; female body color 
blackish cupreous with thin whitish pollen, the squamae 
lightly tinged with yellow, the third abdominal segment 
sometimes and the fourth segment always highly polished 
cupreous; middle femur with two or three (usually two) 
anterodorsal bristles toward base. (Nearetic)........... 
bite aauciis nels Apaulina cuprina, new species, p. 191 
23. Front at narrowest less than 0.09 of head width in male, 0.27 
in female; parafaciale opposite lunule less in- width than 
distance between vibrissae in metallica, equal in 
BORETCISSS ug dial "lle ew AE SRA Mite a a 24 
Front at narrowest 0.10 or more of head width in male, 0.28 
in female; parafaciale opposite lunule equal in width 
to distance between vibrissae. (Nearctic).............. 
.... Apaulina hirundo (Shannon and Dobroscky), p. 196 
24. Head length at antenna and at vibrissa approximately equal 
in both sexes; distance between vibrissae greater than 
width of parafaciale opposite lunule in proportion 1.4: 
2.4 in male, 1.7:2.0 in female; body color of male metal- 
lic blue, fourth abdominal segment of female bright metal- 
Herewnercise ( Nearetiey El POLI Ie. 
OF BASH! “Ato Apaulina metallica (Townsend), p. 196 
Head length at antenna greater than at vibrissa in approxi- 
mate proportion 7.0:6.5; distance between vibrissa and 
width of parafaciale opposite lunule nearly equal; body 
color metallic blue in both sexes. (Nearctic)........... 
met Ari rs Apaulina sialia (Shannon and Dobroscky), p. 201 
KEY TO KNOWN LARVAE OF CHRYSOMYINAE!? 
1. Second and third instar (ef. Callitroga americana) without 
dorsal spines on posterior margin of segment 11; without 
definite ‘‘button’’ in posterior spiracle................ 
DANTE. betcemtt. HK sis Seas Serie Chrysomyini. 2 
Second and third instar with dorsal spines‘on posterior mar- 
gin of segment 11; with definite ‘‘button’’ in posterior 
NC rt A en es ine hohe oh Wig Phormiini. 5 
1Adapted in part from Knipling (1936, 1939, 1940), and Laake et al, 
(1936). 
