References. Frick, 1956: 287; Spencer, 1969a: 153; 
1981: 310; Spencer and Stegmaier, 1973: 87. 
Male genitalia with aedeagus having mesophallus 
longer, more slender (figs. 884, 885) 8 
8 (7). Male genitalia with aedeagus (figs. 884, 885) 
having distiphallus only slightly extended at rear; 
posterior ventral sclerites fully fused, forming 
large, flaplike process (see Steyskal, 1973a: fig. 
1, rear of aedeagus in ventral view); basal scle- 
rites membranous between lateral margins 
C. jucunda (Wulp) 
Synopsis. Closely resembling platyptera on ex- 
ternal characters but mesonotum less shining; wing 
length in unique holotype 2.2 mm, last section of 
M 3+4 2-2.5 times length of penultimate. 
Host/Early Stages. Unknown. 
Distribution. Pennsylvania, Wisconsin. 
References. Steyskal, 1973a: 191; part 2, p. 300. 
Male genitalia with aedeagus having distiphallus 
relatively long, distinctly extended at rear 
(figs. 888, 889); posterior ventral sclerites ful- 
ly fused; basal sclerites more strongly sclero- 
tized at lateral margins C. menthae Spencer 
(Squamal fringe sometimes appearing partially 
dark, see couplet 30.) 
Synopsis. Closely resembling £. platyptera apart 
from less shining mesonotum; wing length 1.9-2. 2 
mm, last section of vein M 3+4 2.5-3 times length 
of penultimate. 
Host/Early Stages. Hyptis mutabilis , Monarda fis - 
tulosa , Monardella odoratissima , Ocimum sp. Larva 
forming brownish blotch mine adjoining margin of 
leaf (fig. 890), with frass in scattered black 
grains, pupation externally; puparium brown, 
posterior spiracles each with 3 bulbs. 
Distribution. Florida, California (new record); 
Canada. 
References. Spencer, 1969a: 152; Spencer and 
Stegmaier, 1973: 83; part 2, p. 301. 
9 (3). Face largely black £. humeralis (Roser) 
Synopsis. Frons bright yellow, upper orbit broadly 
black to upper ors, not infrequently darkened to 
area of upper ori; 3d antennal segment ovoid, 
angular at upper corner (fig. 891); face black or 
gray, at most slightly yellow below; mesonotum 
shining black; legs entirely black; squama and 
fringe white; wing length 2-3.5 mm; male genitalia 
with aedeagus (figs. 892, 893) having mesophallus 
narrowing distally and only slight ventral curva- 
ture . 
Host/Early Stages. Aster , Conyza , Heterotheca , 
Madia , Solidago ; in Europe, Beilis and Erigeron ; 
in Argentina, Tithonia , Zinnia . Larva forming 
small, elongate blotch, frequently associated with 
midrib, pupating internally on mass of black 
frass; posterior spiracles at end of conspicuous 
144 
