Host/Early Stages. Eriodictyon californicum . 
Larva forming irregular upper surface linear 
mine; puparium at end of mine on upper surface 
(details of puparium not available) . 
Distribution. Central California. 
Reference. Spencer, 1981: 438. 
1 or 1 Chroma tomyi a mimuli Spencer 
Synopsis. Closely resembling eriodictyi but 
frons paler, lemon yellow; wing length 2-2.5 mm, 
2d costal section 1.5-2 times length of 4th; 
male genitalia with aedeagus as in figures 
1171, 1172. 
Host/Early Stages. Mimulus , Nemophila phacel - 
ioides , Phacelia . Larva forming irregular up- 
per or lower surface mine (fig. 1173), pupating 
at end of mine; puparium whitish gray, posteri- 
or spiracles each with ellipse of about 8 bulbs 
(on Phacelia viscida ) . 
Distribution. Central and southern California; 
new record: Texas, Travis Co., Austin, 1 f., 
ex leaf mine on Nemophila phacelioides , 
16. IV. 80 (S. Tavormina) . 
Reference. Spencer, 1981: 443. 
48 (34). 3d antennal segment unusually large (fig. 1174)- 
^P. penstemonis Spencer 
Synopsis. Frons pale yellow above, slightly 
darkened, grayish, below; orbit and lunule yel- 
low; 2 ors, 1 ori; 3d antennal segment black, 
1st and 2d paler, yellowish; mesonotum ash 
gray; legs with femora black, all knees bright 
yellow; small species, wing length 1.6-2 mm, 
2d costal section short, about 1.5 times length 
of 4th; male genitalia with aedeagus as in fig- 
ures 1175, 1176. 
Host/Early Stages. Penstemon laxif lorus and 
certainly other Penstemon spp. Larva forming 
short, white, upper surface mine (fig. 1177), 
pupating in leaf; puparium whitish, anterior 
spiracles projecting through epidermis, poste- 
rior spiracles each with ellipse of 8 bulbs. 
Distribution. California; new record: Missis- 
sippi, Washington Co., Leland Experimental 
Forest, 10 m. , 10 f., emerged 20.V.79 from leaf 
mine, coll. 17.V.79 (G. McMinn, KAS, USNM) ; 
Canada. 
References. Spencer, 1969a: 265; 1981: 411. 
3d antennal segment elongate but smaller 
_ P. plantaginis Robineau-Desvoidy 
Synopsis. Generally as in .P. penstemonis , apart 
from smaller 3d antennal segment and slightly 
darker, brownish gray mesonotum; wing length 
about 2 mm; male genitalia with aedeagus as in 
figures 1178, 1179 (Europe; apparently entirely 
parthenogenetic in Australia, North America, 
and New Zealand, see Frick, 1951b). 
Host/Early Stages. Plantago , particularly 
190 
