57 



Antero-distal margin not extended ventrad: narrow. Posterior margin with a narrow 

 concavity which extends to the tail. FCu strongly reduced distally; large; distinct; occupies 

 most of the head; broadly ovoid. FA small. Anterior margin entire; not reduced by FCu. 

 AXCu present; moderately narrow: extends to the antero-proximal margin. Suture line 

 between FCu and FA present. Suture line between FCu and AXCu present. Suture line 

 between FA and FJ absent. 



Neck elevated proximally; depressed distally. FCu section of neck absent. AXCu forms 

 the entire neck. Proximal margin elevated as a broad ridge. Ridge extends to postero- 

 median of the proximal margin of tail: moderately long: enlarged dorsally relative to tail. 

 Dorsal surface^of ridge is curved distad. Embayment very deep: extends past the medial 

 margin of tail. Prong armed with a single very long and broad tooth: oriented proximo- 

 dorsad. Detached AXCu fragment slender; ovoid: moderately sclerotized. 



Tail deltoid; broad; short; planate. Dorsal surface oriented mesad. Window absent. FJ+AXJ 

 narrow; occupies the distal half of the tail; weakly sclerotized. Suture line between FJ and 

 AXJ absent. Suture line between FA+AXJ and AXA present. AXA as equally sclerotized 

 as FA+AXJ; the former occupies the postero-proximal half of the tail; straight. Suture line 

 between AXA and AXCu present. 



Hind Wing Base Description 



First Basal Plate (Fig.91) 



Humeral Plate moderately broad and long. Anterior margin weakly sinuate; lies distant 

 from BScA. Apex moderately broad; deltoid; oriented proximad. Dorsal margin convex. 

 Proximal margin convex; oriented proximad; straight. Ventral margin concave. Suture line 

 between FPC+BPC and FC+BC present. FPC+BPC formed as a small sclerite below the 

 ventro-proximal margin of FC+BC. 



Anterior Subcostal Basivenale broadly deltoid; convex; moderately elevated. Proximal and 

 distal sections separated by a prominent suture. Proximal section extended postero-ventrad 

 as a very broad convexity; about as large as the distal section. Distal section discontinuous 

 with the Sc A bulge; separated by a very broad and extremely deep concavity. Apex broadly 

 rounded; oriented distad. 



Subcosta Anterior strongly convex. Bulge moderately broad: distinct. Median section 

 deeply concave; all other margins strongly convex. 



Radial Basivenale large; strongly convex; open; discontinuous with the radial stem; angled 

 antero-proximad; very strongly recurved; moderately broadly rectangular. Arises from the 

 radial stem and curves very strongly antero-proximad and dorsad away from both ScA 

 and BScA. Proximal arch strikingly broad; angled posteriad; deltoid; posteriorly strongly 

 extended proximad and distad; continuous with the anterior margin of BR. Postero-distal 

 section rounded. Posterior margin extremely broad: deeply concave: surrounds the 

 terminus of BMA proximal arch. Anterior margin strongly elevated above the posterior 

 margin of the ScA bulge and BScA: moderately broad: convex; angled antero-distad; 

 continuous with the distal arch. Embayment normal size. Distal arch very weak: 

 discontinuous with the radial stem; very broad; strongly recurved; oriented posteriad. br 



