WINGLESS REPRODUCTIVE TYPE OF TERMITES 599 
sternite of the seventh abdominal segment and the absence of 
the genital appendices (styles) on the ninth abdominal segment 
in first-form adult females, these small appendices (styles) having 
disappeared with the last molted skin (Snyder, 715, p. 40). 
The wings of the adult of R. flavipes (figs. 3, 5) are dissimilar 
in size, the mesothoracic wings being slightly larger, and have 
slight differences in venation. 
According to both Comstock (’18) and Holmgren (’09), four 
veins are present: the subcosta, sc, which forms the costal margin 
of the wing, and, according to Comstock, “‘is greatly thickened. 
It is probably formed by the coalescence of costa and subcosta, 
S$ ¢. 
5 
Fig. 5 Reticulitermes flavipes. Hind wing of first-form adult. sc, subcosta; 
r, radius; m, media; cu, cubitus; h.s, humeral suture. Spencer oc. 6, obj. 32 mm., 
stage level, reduced one-half. 
and may also include vein R 2 + 3.” Parallel to the subcosta 
and also chitinized is the radius, 7; the media, m, is delicate, with 
but little chitin, and the same is true of the cubitus. cu, with its 
many branches along the anal margin of the wing. The chief 
differences in the venation of the two wings are as follows: fore 
wings—1) the larger ‘scale,’ i.e., the proximal part of the wing 
which remains attached to the thorax after dealation, and which 
is bounded distally by the ‘humeral suture,’ the line of breakage; 
2) the media separate from the radius near their origin, within 
the ‘scale;’ 3) no ‘radial sector,’ or distinct branch of the radius, 
is present; hind wings—1) the smaller ‘scale’ and indistinct 
humeral suture; 2) the radius and media are coalesced within 
the area of the ‘scale,’ but separate immediately after leaving 
it; 3) in some specimens a faint ‘radial sector’ is present. 
