Agromyza spiraeae Kaltenbach, 1867: 
104 (synonymy established by 
Spencer, 1976a: 134). 
This species is common on many genera 
of Rosaceae in Europe, but unfortun- 
ately no reared specimens are known in 
North America. The characteristic 
linear blotch mines were found on 
Potentilla gracilis in California, 
Nevada County, Sagehen Creek, at 6,000 
feet (KAS). Although no specimens were 
reared, a caught male from the same 
locality was identified as A. 
potentillae by Spencer (1981: 122). A 
long series from high elevations in 
Colorado are recorded here. In these 
specimens the squama and fringe are 
darker (deep black) than in typical 
A. potentillae , but the genitalia are 
not separable from those of European 
specimens, and without supporting host 
information, it is not consdered justi- 
fiable to treat them as distinct from 
A. potentillae . 
Frick (1959: 358) discussed this 
species as A. spiraeae Kalt. 
New records. 
Colorado, Clear Creek Co., Summit 
Lake, Mt. Evans, 12,800 ft, 6m., 3 
f . , 16. VII. 61 (C. H. Mann); Niwat 
Ridge, 11,500 ft, 1 f., 4. VII. 61 
(C. H. Mann); Mt. Evans, Timber line, 
11,700 ft, 2 f., 29. VII. 61 (C. H. 
Mann and B. H. Poole) ; Independence 
Pass, Lake Co., 11,500 ft, tundra, 1 
m., 2 f., 31. VII. 61 (J. G. 
Chillcott); all in CNC. 
Utah, Duchesne Co., Wasatch National 
Forest, Mirror Lake, 10,200 ft, 1 
f., 30. VII. 75 (G. Eickwort), in CUI. 
Agromyza pudica Spencer, new species 
(Figs. 428, 429) 
Head. Frons not projecting above eye, 
narrow, equal to width of eye; 2 ors, 
3 ori, orbital setulae sparse, 
reclinate; ocellar triangle short, not 
extending beyond foremost ocellus; 
gena narrow in center, extended at 
rear, 0.25 height of eye; 3d antennal 
segment small, round. 
Mesonotum. 3 strong postsutural dc, 
4th possibly just differentiated from 
acr, no presutural, acr numerous, in 8 
rows . 
Wing. Length in male 2.2 mm, in fe- 
male 2.4 mm, C extending weakly to 
M 1+2 but sometimes appearing to end 
shortly after R 4+5, last section of 
M 1+2 distinctly shorter than penulti- 
mate, inner crossvein near midpoint of 
discal cell. 
Color. Head, including antenna black; 
mesonotum brilliantly shining black; 
legs largely black but tarsi 
distinctly pale, faintly yellowish; 
squama yellow, fringe black. 
Male genitalia. Aedeagus (figs. 428, 
429) with basal sclerites greatly ex- 
panded anteriorly, forming right angle 
with distiphallic complex and with 
narrow extension on anterolateral 
margin; sperm pump with long basal 
stalk; surstylus angular, with row of 
short bristles extending to lower 
corner (contrast A. aprilina and A. 
utahensis (fig. 366), in which lower 
corner is bare). 
Host/early stages. Unconfirmed but 
certainly Poaceae. 
Holotype m. , Arkansas, Garland Co., 
Hot Springs, 15.V.79; paratypes 1 f . , 
same data; (both KAS and USNM) ; 
Georgia, Rabun Co., Rabun Bald, 1 m. , 
2 f., 16. VII. 57 (J. G. Chillcott, 
CNC); Minnesota, Minneapolis, Minnehaha 
Creek, 1 f . , 28. VIII. 76 (KAS); North 
Carolina, Transylvania Co., Pisgah 
Forest, Looking Glass Lake, 1 m., 
19. VII. 57 (W. R. Richards). Holotype 
and female paratype in USNM, male 
paratype in CNC. 
Agromyza reptans Falldn 
(Figs. 394-397) 
Agromyza reptans Falldn, 1823a: 3. 
Holotype male from Sweden in NRS. 
Agromyza haplacme Steyskal, 1972b: 2. 
Holotype male from Michigan in USNM. 
NEW SYNONYM. 
267 
