48 
PACIFIC SCIENCE, Vol. VIII, January, 1954 
sparse, erect, pale hairs; smooth except for 
two large punctures on basal margin. 
Hemelytra long; the costal margin of co- 
rium feebly arcuate, especially posteriorly, 
less than twice as long as pronotum (42:22.5); 
the cuneus more than 0.33 as long as corium 
(17.5:42). 
Length: Female, 3.8 mm. Width across 
hemelytra, 0.9 mm. 
colour: Head, pronotum, and scutellum 
shining, pale yellowish brown. Eyes reddish 
brown. First antennal segment yellowish 
brown; second segment and apex of first dark 
reddish brown; third and fourth black, Clavus 
pale amber, margins of inner division darker 
yellowish brown. Embplium slightly tinged 
with amber; yellow at apex; margins, espe- 
cially at apex, very narrowly brown. Inner 
margin of corium, from just in front of apex 
of clavus to inner basal angle of cuneus, in- 
fuscated brown; rest of corium colourless. 
Cuneus nearly colourless, faintly tinged with 
amber; outer margins narrowly dark. Mem- 
brane colourless; veins pale. Rostrum, tibiae, 
apex of femora, undersurface of head and 
thorax pale yellowish brown. Tarsi infuscated 
at apex. Remaining segments of legs and 
venter of abdomen yellowish white. 
type: Holotype female, Los Banos (Luzon, 
Philippine Is.), July 17, 1936, R. L. Usinger. 
Deposited in the California Academy of 
Sciences. 
This species was noted by Usinger (1946: 
72). 
F. usingeri belongs to the magnificus group 
of species and appears to-be closest to philip- 
pinensis Hsiao differing in the paler colour; 
the rather smaller size; the narrower head 
across eyes in proportion to length of head, 
width behind eyes, and width of pronotal 
base; the much shorter second and third an- 
tennal segments; and the longer rostral seg- 
ments I-III (4:4:8 in philippinensis) . Usingeri 
resembles magnificus Distant in the long, nar- 
row head; from this species, however, it differs 
strikingly in colour, the pattern being very 
characteristic in magnificus, in the shorter an- 
tenniferous tubercles and the more convex 
and much narrower anterior border of the 
head between them (in magnificus, interanten- 
nal width: width across eyes: :4. 5: 15), in the 
three basal segments of the rostrum being 
longer in proportion to the fourth (in mag- 
nificus, 3:3:8.5:18), height of eye equal to 
subocular part of head (much greater in mag- 
nificus, 8:5), the proportionately shorter first 
antennal segment (in magnificus, I:II::22:25), 
the posterior lobe of pronotum narrower at 
base in proportion to anterior collar (in mag- 
nificus, 27:10.5). 
From crassicornis Usinger the new species 
differs in its paler colour, in the much longer 
and narrower head, the eyes wider in propor- 
tion to interocular space, the proportionately 
longer second antennal segment, the prono- ' 
turn longer in proportion to head, with apical 
collar proportionately shorter, the cuneus 
longer in proportion to corium. From pulchel- 
Itis Poppius (not seen) it differs markedly 
in colour, the wider eyes in proportion to 
interocular space, and the relatively much 
longer second antennal segment; and from 
longiceps Poppius (not seen) in colour and in 
the relatively much shorter first and fourth 
antennal segments. 
The measurements and figures of magnificus 
given in this paper are derived from a spec- 
imen collected in Amboina, E. Indies (F. 
Muir, June, 1908), and kindly supplied to 
me by Dr. R. L. Usinger, who had provision- 
ally identified it as magnificus. This species 
was described from Tenasserim (Distant, 
1904: 439, fig. 284). Topotypic material has 
not been available, so that no further com- 
parison has been possible. However, the ap- 
pearance of magnificus is strikingly character- 
istic, and the present specimen agrees with 
Distant’s figure and with his description as 
far as it goes. In view of the presence of 
elegantulus in both Australia and New Zealand, 
the occurrence of magnificus so far from its 
type locality does not seem so surprising. 
Little is known of the extent and methods of 
distribution of the species of this genus. It 
