Some Stratiomyidae (Diptera) from Okinawa and Guam 
Maurice T. James 1 
The present paper is based on the study 
of a collection of Stratiomyidae from Oki- 
nawa and from Guam and the neighboring 
island of Rota, and now preserved in the 
United States National Museum and the Cali- 
fornia Academy of Sciences. 
SPECIES FROM OKINAWA 
Wallacea albiseta de Meijere 
Wallacea albiseta de Meijere, 1907, Tijd. v. 
Ent, 50: 236. 
Material examined l: Okinawa, June to 
August, 1945 ( W. D. Field, F. N. Young, 
G. E. Bohart, C. L. Harnage), 9 females, 19 
males. 
This widely distributed species has been 
misdetermined as W. argentea Doleschall by 
Brunetti and other authors. 
Oplodontha rubrithorax (Macquart) 
Odontomyia rubrithorax Macquart, 1838, 
Dipteres exotiques nouveaux ou peu con- 
nus, vol. 1, pt. 1, p. 185. 
Material examined: Okinawa, July to Sep- 
tember, 1945 (F. N. Young, W. D. Field, 
R. Bohart), seven males, two females. 
Sargus mactans Walker 
Sargus mactans Walker, I860, Proc. Linn. 
Soc. London, 4: 97. 
Material examined: Chizuka, Okinawa, 
July to September, 1945 (G. E. Bohart, C. 
L. Harnage), one male, two females. 
department of Zoology, State College of 
Washington, Pullman, Washington. Manuscript 
received August 29, 1949. 
Ptecticus okinawae new species 
Male: Head mainly yellow, with golden 
pile; frontal callus whitish; occiput black, 
subshining, with whitish pollen toward the 
orbits. Antenna structurally as in P. aurifer 
(Walker), yellow, the flagellum dulled with 
whitish pollen; arista brownish-yellow at ex- 
treme base, otherwise black. Mesonotum, 
scutellum, and postscutellum brownish with 
bluish to violaceous reflections, paler late- 
rally; thorax otherwise reddish-yellow, the 
areas adjoining the sutures paler; pile golden 
except a tuft of short black hairs above the 
base of each haltere. Halteres yellow; legs 
uniformly reddish-yellow, the middle and 
hind femora with slight bluish reflections; 
pile of legs yellow. Wing venation as in 
aurifer ; anterior part of wing as far apicad 
as vein R 4 and enclosing and extending be- 
yond the discal cell yellow; wing apex and 
posterior half of wing uniformly grayish and 
contrasting with the yellow area; veins yellow 
in yellow area, brownish-black in gray area. 
Abdomen reddish-yellow in ground color but 
with large, poorly defined areas taking in all 
but posterior and lateral margins of terga one 
to four and of sterna four and five, brownish- 
black, with bluish to violaceous reflections; 
pile of first five terga mostly short, black; 
lateral and apical margins of these terga, as 
well as entire venter and genital segments, 
with golden pile. Genitalia reddish-yellow. 
Length, 14 mm. 
Holotype: Male; Chizuka, Okinawa; July 
to September, 1945 (G. E. Bohart, C. L. Har- 
nage ) ; California Academy of Sciences. 
Related to P. aurifer (Walker), but easily 
distinguishable by the lack of contrast be- 
tween the gray area of the apex and of the 
[ 184 ] 
