3 f., 23. VII. 61; 1 m. , 3. VIII. 61; (all B. H. Poole, 
CNC); Alaska, widespread in Canada. 
References. Spencer, 1969a: 215; 1981: 359. 
Scut el lum uniformly dark 3 
(2). Notopleuron and upper half of mesopleuron yellow 
- N. suda Spencer 
Synopsis. Exceptionally large species, wing 
length 4-5 mm; scutellum entirely black; squamal 
margin and fringe yellow; male genitalia not ex- 
amined. 
Host/Early Stages. Unknown. 
Distribution. New records: Michigan, South Dakota; 
Canada. 
References. Spencer, 1969a: 217; part 2, p. 309. 
Notopleural triangle black or gray, only upper mar- 
gin of mesopleuron narrowly yellow 4 
(3). 2 d costal section exceptionally short, less than 
length of 4th (fig. 1059); 1 ori N . minuta Spencer 
Synopsis. Frons, gena, and face bright yellow; 2 
ors, 1 ori; mesonotum deep black, with weak sub- 
shine, 3+1 dc, acr lacking; pleura black, only up- 
per margin of mesopleuron broadly yellow; legs 
black, all knees yellow; squama and margin yellow; 
wing length in male 1.9 mm; male genitalia with 
aedeagus as in figures 1060, 1061. 
Host/Early Stages. Unknown. 
Distribution. California. 
Reference. Spencer, 1981: 355. 
2 d costal section longer, from equal to 1.5 times 
length of 4th; 2 ori 5 
(4). 3d antennal segment with fringe of short pubes- 
cence (fig. 1062) 6 
3d antennal segment without such pubescence 7 
(5). Exceptionally large species, wing length 3.5-4 mm — 
N. grandella Spencer, n. sp. 
Synopsis. Frons broad, 3.5 times width of eye, 
strongly projecting above eye; gena extended at 
rear, about 0.5 height of eye; 3d antennal seg- 
ment with distinct pubescence (fig. 1062); wing 
with 2 d costal section only slightly longer 
than 4th; male genitalia with aedeagus (fig. 1063) 
having end of distiphallus large, black; sperm 
pump (fig. 1064) small. 
Host /Early Stages. Unknown. 
Distribution. Arizona, Wyoming. 
Reference. Part 2, p. 307. 
Smaller species, wing length at most 3.1 mm in fe- 
male N. plume a Spencer 
Synopsis. Frons broad, twice width of eye, con- 
spicuously projecting above eye in profile; frons, 
orbit, gena, and face yellow; 2 ors, 2 (sometimes 
3) ori, orbital setulae short, sparse, proclinate; 
gena deep at rear, 0.33 height of eye; 3d anten- 
nal segment black, pubescence short but distinct; 
mesonotum ash gray, with 3+1 strong dc, acr in 2-4 
rows; pleura grayish black, apart from narrow yel- 
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