eye conspicuously pilose in male; gena narrow, 
0.17 height of eye; mesonotum and abdomen green- 
ish; male genitalia with aedeagus as in figures 
67, 68. 
Host/Early Stages. Asteraceae, confirmed on 
Ambrosia , Bidens , Erechtites , Flaveria , Gail - 
lardia , Gnaphalium , Helianthus , Parthenium , 
Tagetes ; in Hawaii also on Lactuca and Apium 
(Apiaceae). Puparium straw colored, posterior 
spiracles with 8 bulbs but central horn rudi- 
mentary (figs. 69, 70). 
Distribution. Florida, Michigan; new records: New 
York, South Carolina. 
References. Frick, 1953b: 207; Spencer and 
Stegmaier, 1973: 48; Spencer, 1981: 58. 
32 (30). Mesonotum without metallic sheen, predominantly 
blackish 33 
Mesonotum at least slightly greenish or coppery 36 
33 (32). Last and penultimate sections of vein M 3+4 vari- 
able, last section longer, equal to or at most 
little shorter than penultimate M. riparella Hendel 
Synopsis. Small species, wing length 1.9-2.25 mm; 
frons little wider than eye, orbit prominent but 
not significantly projecting above eye; 2 ors, 3 
ori, orbital setulae reclinate; gena deepest at 
rear, 0.20 height of eye; mesonotum black, abdomen 
green; male genitalia with aedeagus as in figures 
71, 72; hypandrium broad (fig. 73). 
Host/Early Stages. Phyla nodiflora , probably P. 
lanceolata . Larva internal stem borer; puparium 
entirely white or faintly reddish; anal segments 
conspicuously curving ventrally (fig. 74); poste- 
rior spiracular processes separated by own diame- 
ter, each with ring of 9 well-defined bulbs, with- 
out trace of central horn or scar. 
Distribution. Florida, Illinois, Texas (new 
record) . 
Reference. Part 2, p. 247. 
— Last section of M 3+4 0.5 or at most 0.67 length of 
penultimate 34 
34 (33). 2 ori M. chillcotti Spencer, n. sp. 
Synopsis. Wing length in male 2.1 mm, last section 
of M 3+4 0.67 of penultimate; frons narrow, equal 
to width of eye; generally closely resembling M. 
subvirens ; male genitalia with aedeagus as in 
figures 75, 76. 
Host/Early Stages. Unknown. 
Distribution. North Carolina. 
Reference. Part 2, p. 244. 
— 3 or 4 ori 35 
35 (34). Abdomen brilliantly shining green; 3 ori 
M. subvirens (Mai loch) 
Synopsis. Wing length 2.5 mm, last section of 
M 3+4 little over 0.5 penultimate; gena deepest in 
center, 0.20 height of eye; eye pilose in male; 
26 
