black but upper margin of mesopleuron and wing 
base bright yellow; legs black, only foreknee at 
most slightly yellowish; squama yellowish gray, 
margin and fringe black; wing length from 1.9 mm 
in male to 2.7 mm in female, discal cell small, 
last section of vein M 3+4 up to 3.5 times length 
of penultimate; male genitalia with aedeagus as in 
figure 529; sperm pump (fig. 530) with small bowl- 
shaped base. 
Host/Early Stages. Many genera in the Caryophyl- 
laceae; in America, reared only from Lychnis alba 
and Saponaria officinalis . Larva forming white 
linear blotch mine (fig. 531); puparium reddish 
brown, posterior spiracles each with 3 bulbs. 
Distribution. New records: Delaware, Ohio, 
Wisconsin; Canada. 
References. Spencer, 1969a: 160; part 2, p. 275. 
20 (17). Tibiae and tarsi yellowish 
A. ( Cephalomyza ) albidohalterata (Malloch) 
Synopsis. Frons yellowish orange, strongly pro- 
jecting above eye; 1 reclinate ors, 4 incurved 
ori; gena extended at rear, 0.25 height of large 
eye; 3d antennal segment small, round, orange; 
palpus black; distinct epistoma present; mesonotum 
black, moderately shining, with 3 strong postsu- 
tural dc, no presutural, acr in 4 rows; legs with 
femora black, tibiae and tarsi yellowish; squama 
pale gray, margin slightly darker, fringe whitish, 
halter white; wing length in male 2.2 mm, last 
section of M 3+4 1.5 times penultimate; male geni- 
talia with aedeagus as in figures 532, 533. 
Host/Early Stages. Unknown. 
Distribution. Illinois, Iowa. 
References. Malloch, 1916: 52; Frick, 1953a: 69; 
1959: 379; part 2, p. 274. 
— Tibiae and tarsi black 
A. ( Cephalomyza ) romulus Spencer 
Synopsis. Closely resembling A. ( C. ) remus but all 
antennal segments and palpus orange yellow; head 
as in figure 534, differing from A. (C.) albido- 
halterata by darker tibiae and tarsi and brilli- 
antly shining black mesonotum; wing length in male 
and female about 1.7 mm; male genitalia with ae— 
deagus as in figures 535, 536. 
Host/Early Stages. Unknown. 
Distribution. California (San Bernardino Mts.). 
Reference. Spencer, 1981: 158. 
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