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PACIFIC SCIENCE, VoL V, April, 1951 
distinct to distinct median brown to black 
vitta on abdominal terga 3 and 4. 
The species also appears to be related to D. 
mayt new name. It is readily separated from D. 
mayi and other related species by the marked 
differences in the female ovipositors (Figs. 
12c and 20^), by the narrow costal band, by 
the lack of a median dark-colored vitta down 
the mesonotum, by the lack of the brown 
shining spots and median vitta on the fifth 
tergum, and by the predominantly pale 
coloration of the abdomen. 
MALE. Head: Entirely yellow to reddish 
except for the shining black facial spots and 
for a slightly brownish discoloration in the 
middle of the front and sometimes at the 
bases of the frontal bristles. The front is two 
times longer than wide. The frontal spots 
are large, oblong, and slightly pointed below. 
All of the head bristles are dark brown to 
black. There are two pairs of inferior fronto- 
orbital bristles. The third antennal segment is 
brownish to black tinged on the upper sur- 
face, it is distinctly longer than the face 
(measured on a mid-line), and is three and 
one-half times longer than wide. Thorax: 
Chiefly yellowish to reddish with some dark 
brown to black markings on the pleura and 
mesonotum. With yellow, yellowish-white, 
or cream-colored humeri, scutellum, post- 
sutural lateral stripes, and other areas typical 
of most members of this group. The base 
of the scutellum does not have a conspicuous 
brown to black band. The lateral yellow 
vittae extend from the suture to the postalar 
bristles. Between the lateral vittae are a pair 
of submedian brown to black stripes ex- 
tending longitudinally, between the pre- 
scutellar and the postalar bristles, from the 
scutellum to the anterior margin of the thorax 
between the inner and outer scapular bristles 
(Fig. 12^). The stripes are expanded on the 
posterior portion in front of the scutellum, 
are briefly interrupted at the suture, and are 
expanded laterally in back of the humeri. 
The median portion of the mesonotum, 
between the black stripes, is clear yellow in 
Fig. 12. Dams (Strumefa) breviacukus n. sp.: a, thorax, 
dorsal view; b, ovipositor, full length; c, apex of ovi- 
positor. 
