on, rear of humerus, upper margin of mesopleuron 
yellow; squama and fringe whitish yellow; wing 
length 1.5-2 mm, discal cell small, last section 
of M 3+4 3 times penultimate; male genitalia with 
aedeagus (figs. 878, 879) having distal process 
short, mesophallus not greatly widening toward 
rear; short anterior ventral lobes distinctly 
broadened, posterior lobes narrow, not fused 
(contrast C. jucunda, figs. 884, 885). 
Host/Early Stages. Asteraceae, recorded in Florida 
(as C. jucunda ) on Ambrosia , Aster, Bidens, 
Gnaphalium , Helianthus , Solidago , Xanthium , Zinnia 
(Stegmaier, 1967a), caught in California in associ- 
ation with Artemisia ; additional hosts recorded by 
Frick (1956): Arctium , Artemisia douglasiana , A. 
vulgaris , Baccharis viminea , Conyza canadensis? 
Grindelia squarrosa . Heterotheca grandiflora (as 
C. jucunda) . Larva forming whitish blotch, fre- 
quently toward base of leaf, with characteristic 
irregular offshoots (fig. 880); puparium brownish, 
attached to pile of frass at center of mine, 
posterior spiracles each with 3 bulbs; young 
leaves become characteristically deformed as re- 
sult of larval mining activity. 
Distribution. Confirmed from California, Florida; 
new record: Mississippi, Washington Co., Stone- 
ville, 8 m., 6 f . , ex Xanthium strumarium , 3. IX. 71 
(K. E. Frick); probably widespread in other south- 
ern States; numerous States listed by Frick (1956: 
288) require confirmation; Cuba, Grand Caman Is., 
Jamaica. 
References. Frick, 1956: 288 (as Phytobia (Cal.) 
jucunda ) ; Spencer and Stegmaier, 1973: 77 (as~"c. 
jucunda ) ; Spencer, 1981: 307; part 2 , p. 300 Under 
C. jucunda ) . 
Mesonotum somewhat matt blackish gray, particularly 
when viewed from front 7 
7 ( 6 ). Male genitalia with aedeagus (figs. 881, 882) 
having mesophallus short, distinctly widening at 
rear, posterior paired ventral lobes long, 
slender, not fused; basal sclerites fully 
fused- C. promissa (Frick) 
Synopsis. Closely resembling C • platyptera but 
mesonotum less shining; wing length 1 . 9 - 2. 3 mm. 
Host/Early Stages. Aster chilens is , A. lateriflor- 
us, and certainly other Aster spp. Larva forming 
white blotch, circular but generally irregular at 
edges; puparium attached to raised pile of frass 
in center of mine (fig. 883); larval posterior 
spiracles each with 5-8 bulbs. 
Distribution. California, Florida; new records: 
Louisiana, Rapides Co., 11 miles S.W. of Alex- 
andria, 3 m., 21. III. 60 (J. G. Chillcott, CNC); 
New York, Ithaca, 1 m. , 1 f . , 5. VIII. 69 (A. G. 
Wheeler, CUI); Canada. 
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