1976] 
Johnson — New Coniopterygidae 
193 
Eighth segment represented by a sclerotized plate forming the 
of M. M. bearing several small setae. Two in the middle of the 
ectoprocts apparently represent elements of tenth segment and 
perhaps part of the ninth as well (Meinander 1972). 
Type-species: Bidesmida morrisoni n. sp. 
Bidesmida is similar to Helicoconis in wing venation and in 
having plicaturae on abdominal segments 3-7. Bidesmida differs 
from Helicoconis in having the eighth sternum strongly sclero- 
tized and forming the venter of the genital capsule, the ectoprocts 
being fused distally, and the parameres being fused with the 
ectoprocts. 
Figures 1-3. Bidesmida morrisoni, n.sp. Fig. 1. anterior view of head. Fig. 2. 
front wing. Fig. 3. hind wing. 
Bidesmida morrisoni new species 
Male-Head capsule (Fig. 1) with large unsclerotized area on 
frons, including antennal sockets, and extending ventrally in a 
tapering tongue to near clypeus. A sclerotized area extending 
down from vertex into this unsclerotized area. Eyes large. Palpi 
long and slender. Last segment of palpi only slightly broader than 
