1980] Johnson — Review of Coniopterygidae 271 
segments about as long as broad; median and distal flagellar 
segments almost twice as long as broad. Ventral spine on male 
pedicel about one fourth the length of the segment from the distal 
end. 
Thorax: Brown with dark brown shoulder spots. 
Wings: In fore wing R 4+ s coalesces for a considerable distance 
with M 1+2. Cu 2 only slightly sinuous. Membrane of wing grey-brown 
with light areas around radial cross-vein and about the m-cu cross¬ 
vein. Membrane of hind wing light greyish. Length of fore wing 
2.2-2.4 mm, hind wing 1.9-2.2 mm. 
Male genitalia (Fig. 2): Ring of 9th sternum dorsally forming a 
Figure 2. Aleuropteryx arceuthobii. Male genitalia, lateral view. 
folded horizontal plate. Process of 9th sternum with three caudal 
processes, 1 central and 2 lateral. Lateral processes slightly dorsad 
to central one and curving slightly dorsad. A pair of slender, 
dorsally directed spines arises cephally of process of 9th sternum 
and ending caudally of transverse plate. Appendages of 9th sternum 
connected distally to transverse plate and bearing 4 long setae on a 
pair of caudally directed processes postero-lateral to the transverse 
plate. Transverse plate with 2 curved processes directed dorsally, a 
laterally flattened ventral process and 2 short acute anteriorly 
directed processes. Apophyses of 9th sternum long and slender. 
Penis ending caudally in 2 lateral plate-like processes and a central 
cone-shaped process containing a duct. 
