SCALY WINGED COPEOGNATHA. 103 
Sub-fam. LEPIDOPSOCIN &. 
Enderlein. Ann. Mus. Nat. Hung. I., 1903, p. 208. 
After I have eliminated the genus Hchinopsocus, Enderl., 1903, 
from this sub-family, there remain for it the following characteristics. 
Fore wing with long macrochetz not only upon the costal area, 
but also on the veins and sometimes also on the membrane of the 
marginal seam. Radial ramus forked, united or fused with the 
pterostigma by cross vein; pterostigma moderately large and 
relatively flat. Hind wing without radial cell (without a closed 
cell), otherwise normal. Radial ramus of fore wing forked. Wing 
scales are all asymmetrical (fig. 107). Antenne more than 30- 
jointed (Echmepteryx) to 47-jointed (Lepidopsocus) ; the antennary 
joints of the flagellum are very short (antenne moniliform) or at 
most about twice as long as thick. 
TABLE OF GENERA OF LEPIDOPSOCIN®. 
The radius developed up to the pterostig- 
ma. Between pterostigma (branch 71) 
and radial ramus a cross-vein .. Echmepteryx, Aaron 
1886. 
(Type: E. Hageni Pack. 1870). 
The radius up to the pterostigma com- 
pletely reduced. The pterostigma 
(branch r,) is fused with the radial 
ramus over a long stretch .. Lepidopsocus, En- 
derl. 1903. 
(Type: L. nepticulides, Enderl. 1903). 
Echmepteryx, Aaron., 1886. 
Frank Aaron. Proc. Acad. Nat. Sci. Philadelphia, 1886, p. 17, 
figs. 4-9. 
[Type E. Hageni (Packard 1870).] 
Pterostigma connected with the radial ramus by a cross vein. 
Radial fork sometimes very small (Z. mihira,n. sp.). Stem of the 
radius connected with the media by a fine and delicate cross vein — 
which shuts in a longish pentagonal cell ; this is wanting in Aaron’s 
figure, but is presumably present also here. Radius well developed 
in its entire extent. In the hind wing r, arises before or close before 
the point of ramification of cw, Both wings more or less acuminate, 
Three ocelli, 
p 10(4)06 
