scutellum also gray; legs yellow; halter uniformly 
yellow; wing length 1.4 mm, last section of M 3+4 
twice length of penultimate; male genitalia with 
aedeagus ending in long, unpigmented, coiled 
tubule (figs. 966, 967); epandrium with single 
stout spine at lower corner (fig. 968). 
Host/Early Stages. Unknown. 
Distribution. Florida; Costa Rica, Puerto Rico. 
Reference. Spencer and Stegmaier, 1973: 116. 
Acr lacking; scutellum yellow centrally 
P. minutissima Spencer 
Synopsis. Head (fig. 969) entirely yellow; 2 ors, 
1 ori, orbital setulae proclinate; eye conspicu- 
ously slanting; mesonotum largely matt gray but 
narrowly yellow before scutellum, this broadly 
yellow centrally; legs with femora yellow and 
brownish striate; halter yellow; wing length 1.25 
mm, last section of M 3+4 twice length of penulti- 
mate; male genitalia with aedeagus (fig. 970) 
greatly reduced, ending in asymmetrical tubules; 
epandrium with single bristle, surstylus oval, 
with 1 or 2 hairs (fig. 971). 
Host/Early States. Unknown. 
Distribution. California. 
Reference. Spencer, 1981: 330. 
7 (6). Mesonotum uniformly gray to margin of scutellum 8 
- Mesonotum partially yellow, banded (fig. 983) 10 
8 (7). Minute species, wing length 1.3 mm; 3d antennal 
segment largely black P. floridana Spencer 
Synopsis. Frons yellowish brown, 2 ors, 1 ori, 
orbital setulae proclinate; 1st and 2d antennal 
segments yellow, 3d large (fig. 972), largely 
black but yellow toward base; mesonotum and scu- 
tellum uniformly matt gray, acr sparse, in 2 rows; 
legs largely yellow but femora blackish basally; 
squama yellowish gray, fringe pale; halter yellow- 
ish brown, knob distinctly darkened; male geni- 
talia with aedeagus ending in asymmetrical tubules 
(fig. 973); epandrium (fig. 974) with row of stout 
spines along inner margin, surstylus with 2 short 
spines at base, 3 longer ones and several hairs on 
inner corner. 
Host/Early Stages. Unknown. 
Distribution. Florida. 
Reference. Spencer and Stegmaier, 1973: 114. 
- Larger species, wing length 1.6-2. 5 mm; 3d antennal 
segment brownish yellow 9 
9 (8). Scutellum normally gray; small species, wing length 
1.6-2. 2 mm P. arctica (Lundbeck) 
Synopsis. Orbital setulae distinctly proclinate 
(fig. 975); color of head variable, from largely 
black (Greenland; Mt. Evans, Colorado) to largely 
yellow; frons and antennae normally yellowish 
brown; mesonotum matt gray, acr sparse, in 2 rows 
in front; scutellum normally gray, rarely faintly 
154 
