1980] 
Johnson — Review of Coniopterygidae 
267 
Larvae with antennae and labial palpi of about equal length. Jaws 
long, slender, projecting from beneath labrum for more than half 
their length. 
Notes: There are 4 known genera of this subfamily within the area 
of this study. 
Key to North American genera of Aleuropteryginae 
1. Radial cross-vein in hind wing strikes Rs on branch R2+3 . • • 
.2 
Radial cross-vein in hind wing strikes Rs on stem or on fork 
. Aleuropteryx 
2. Seventh sternum of male with plicaturae.3 
Seventh sternum of male without plicaturae. Helicoconis 
3. Bases of medial setae distinctly thickened. Neoconis 
Bases of medial setae not distinctly thickened. 
Medial setae not prominent. Bidesmida 
Genus Aleuropteryx Low, 1885 
Aleuropteryx Low, 1885:79. Type, by monotypy, Aleuropteryx 
Lowii Klapalek, 1894. 
Antennae distinctly separated. Eyes small to medium. Head cap¬ 
sule and palpi usually dark. 
Antennae 19-27 segmented. Scape and pedicel elongate; male 
pedicel with distinct ventral spine. Flagellar segments varying in 
length, usually as long as or longer than broad; hairs not arranged in 
distinct whorls. 
Palpi unicolorous and slender, last segments of both labial and 
maxillary palpi only slightly broader than preceding segments. 
Basal segments of labial palpi distinctly longer than broad. 
Fore wings (Fig. 1) short, subtriangular, usually slightly more 
than twice as long as broad. Usually 2 basal cross-veins in costal 
area. Sc forks distally of radial cross-vein, which usually strikes 
R2+3, but sometimes strikes fork or stem of Rs. R4+5 coalesces with 
Mi +2 in most specimens, but may be connected by a cross-vein which 
superficially appears to be a branch of M. M not thickened at bases 
of setae. Cross-veins rs-m and m-cui strike M close to each other in 
middle of wing. Cu 2 sinuous, parallel with hind margin in all North 
American species. Sc, Ri, distal end of R2+3 and basal parts of Cui, 
Ai and A 2 thicker than other veins and bearing hairs. Longitudinal 
