128 
PACIFIC SCIENCE, Vol. V, April, 1951 
' 'I'':'.- .'ll' '' i, , i \ ,, '"i i ii\ A' >1 
Fig. 5. Dacus {Daculus) signatifer Tryon: a, thorax, dorsal view; b, wing of male; c, female ovipositor, full 
length; d, apex of ovipositor. 
short. The third segment is slightly shorter 
than the face and is scarcely over three 
times longer than wide. Thorax: pale 
colored; the three mesonotal vittae, the hum- 
eri, scutellum, notopleura, metapleura, and 
portions of the sternopleura and mesopleura 
are differentiated from the remainder of the 
integument by being lighter in color (cream 
instead of reddish-yellow). The median vitta . 
on the mesonotum extends from a point 
about opposite the outer post-alar bristles to a 
point opposite the hind margin of the humeri. 
The median vitta is broad in the basal por- 
tion and somewhat narrowed anteriorly (Fig. 
5^). The inner post-alar bristles are poorly 
developed compared to the outer pair; they 
are scarcely one-half as large. The halteres 
are pale yellow. The scutellum is strongly 
