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PACIFIC SCIENCE, VoL VII, July, 1953 
Abdomen without conspicuous dorsal 
white scaling, lateral light patches may be 
present but not visible from above; light 
scaling of head and thorax strongly azure 
blue, arranged in broader patches on tho- 
rax; no frontal tuft; males with front tarsus 
or tibia and tarsus with specialized tufts 
of bristles and scales 6 
5. Hind tarsus white-scaled from middle of 
segment 3; light scaling of head, thorax, 
and wing almost pure white; very narrow 
orbital light line; supra-alar line extending 
cephalad of spiracle; abdominal tergite 5 
with white apical transverse band extend- 
ing to sternite U. solomonis n. sp. 
Hind tarsus white-scaled from apical fifth 
of segment 2; light scaling of head, thorax, 
and wing distinctly bluish; broad orbital 
light line; supra-alar line not reaching spi- 
racle and angled cephalodorsad; abdominal 
tergite 5 completely dark-scaled 
U. civinskii n. sp. 
6. Tarsi all dark-scaled; wing scales all dark 
dorsally; abdominal tergites with incon- 
spicuous lateral white patches; male with 
first segment of front tarsus excavated and 
shortened, second segment without tuft 
of long bristles and scales, fore tibia with- 
out long apical tuft of scales 
U. atra Theobald 
Hind tarsus white-scaled from apex of seg- 
ment 2; wing scales iridescent bluish on 
base of R, Cu, and lA; abdominal tergites 
completely dark-scaled; male with first seg- 
ment of front tarsus not excavated but 
with long basal bristles, second segment 
with large tuft of long bristles and scales, 
fore tibia with long apical tuft of scales . . 
U. harnesi n. sp. 
2. MALE GENITALIA 
1. Gasper slender, gradually narrowed api- 
cally; ninth tergite not emarginate apically 
and without lateral lobes; mesosome with 
numerous short teeth not arranged into 
apical and median groups 
.U. quadrimaculata Edwards 
Gasper broad, parallel-sided or expanded 
before apex; ninth tergite emarginate api- 
cally, with more or less distinct lateral 
lobes; mesosome with a few long spines 
or teeth arranged in apical and median 
groups 2 
2. Mesosome with a complete dorsal sclero- 
tized bridge, each plate with two apical 
spines and three or more teeth on median 
process U. solomonis n. sp. 
Mesosome with only a narrow basal dorsal 
sclerotized bridge, each plate with only 
one apical and one median strong spine . . 
3 
3. Lobe of ninth tergite produced as a strong- 
ly sclerotized blunt spine that is longer 
than broad . U. civinskii n. sp. 
Lobe of ninth tergite broadly rounded, not 
produced as a distinct spine, always broad- 
er than long 4 
4. Apical spine of mesosome plate short, aris- 
ing at extreme apex, median spine arising 
close to it 5 
Apical spine of mesosome plate long, aris- 
ing distinctly before apex, median spine 
arising more ventrally 6 
5. Ninth tergite broadly emarginate apically 
median bridge distinctly shorter than width 
of emargination, lateral lobe distinctly pro- 
duced U. wysockii n. sp. 
Ninth tergite narrowly emarginate apically, 
median bridge at least as long as width of 
emargination, lateral lobe broadly rounded 
. . . f/. sexaueri n. sp. 
6. Ninth tergite very narrowly but deeply 
emarginate apically, median bridge short, 
lateral lobe very broadly rounded; basal 
lobe of sidepiece with numerous bristles 
U. atra Theobald 
