322 
join. The sense-organs in the male are only short, 
and are hardly produced beyond the apex of antenne. 
This appears to be a somewhat constant character in 
Oligosita and is most probably in conjunction with the 
fact that the female has the difficult work of finding the 
host-eggs in the grass, for which reason these organs 
must naturally be more developed than is the case with 
the male. 
Anterior wings long and narrow. Marginal vein long, 
radius short, stigma triangulate, placed nearer the outer 
edge of wing than centerline of wing, with fuscus sha- 
ding below stigma reaching to posterior margin of wing, 
subcosta with a similar shading along the innerside. 
Marginal vein provided with five strong sete. Apical 
third of wing surface provided with hairs, not forming 
regular rows; below stigma two or three irregular rows 
of hairs. Fringe long, longest at outer-margin, shorter 
at costal and inner-margin, the longest slightly shorter 
than breadth of wing at stigma. 
Posterior wings long, knifeshaped, costal margin with 
short hairs, hind margin with long hairs. Surface with 
a central row of short hairs, near costal margin a similar 
but somewhat thinner row of hairs. 
Thorax as broad as but slightly shorter than 
abdomen. Segments of abdomen almost of equal length. 
Abdomen of female conical, of male cylindrical. 
Ovipositor, sheaths etc. clearly visible on underside of 
female, which, however, are not produced beyond apex 
of abdomen.*) 
Male long and slender, female a little shorter and 
thicker. 
Length: male 0,75 mm, female 0,75 mm. 
The species is exceedingly common i open grassy 
spots in woods. I have taken it in Dyrehaven (many 


*) A short penis can be seen in male which is produced slightly 
beyond apex of abdomen, 
