29 



Hind Wing Base Description 



First Basal Plate (Fig.42) 



Humeral Plate moderately long. Anterior margin weakly sinuate. Apex deltoid; curved 

 ventrad. Dorsal margin weakly sinuate; distant from BScA. Ventral margin weakly sinuate. 

 Suture lines between FPC+BPC and FC+BC present. 



Anterior Subcostal Basivenale broadly deltoid; weakly convex; oriented distad. Proximal 

 section long; separated from the distal section by a prominent suture; as large as the distal 

 section. Antero-median oriented anteriad: weakly convex; terminus distant from HP. Apex 

 broadly rounded; oriented distad. - Subcosta Anterior weakly convex. Bulge narrow. 



Radial Basivenale convex; strongly open; slender; oriented antero-proximad: continuous 

 with radial stem. Proximal arch narrow; short; oriented postero-proximad. Anterior section 

 present. Postero-distal margin rounded. Anterior margin elevated above BScA: narrow. 

 Embayment normal size. Distal arch absent, br moderately sclerotized; large; discontinuous 

 with BR. br projection apically broad; distinct from BSc. 



Second Basal Plate (Fig.43) 



MA-BMA Junction absent. - MP-BMP Junction entire. MP almost continuous with BMP; 

 enters below the distal plate. - Crimp Patterns absent. - BMP-CuA Brace moderately 

 broad; convex; entire; adjacent to. but distinct from, the distal margin of 2BP. Anterior 

 continuous with MP. Point of fusion discontinuous. Posterior continuous with CuA. - 

 BMP-BCuA Brace absent. 



Medial Basivenalia very large: rectangular. Anterior and posterior margins concave. 

 Anterior margin separated from BR by membrane. Posterior margin separated from BCuA 

 by a sclerotized, concave groove. BMA broadly scaphoid; weakly convex; separated from 

 BMP by a broad, shallow groove: lies anteriad, but not proximad of BMP; fully fused to 

 BMP. Proximal arch allantoid; long; weakly convex; straight; enlarged antero-proximally. 

 Distal arch distinct; oriented distad. BMP rectangular: convex; discontinuous with brace; 

 distinct from IBP and BCu. Anterior section rectangular; weakly convex; separated from 

 the posterior section by a weak impression. Posterior section present; weakly convex; 

 depressed below the anterior section. 



Cubital Basivenalia broadly fused. Posterior margin of BCuA fused with anterior margin 

 of BCuP Suture line weak. BCuA about the same size as BCuP: deltoid; strongly convex; 

 oriented weakly distad. BCuP deltoid; weakly convex; oriented postero-distad: weakly 

 sclerotized. Proximal margin forms a convex ridge. Embayment very shallow. - Cubitus 

 Anterior fused to BCuA. Anterior interrupted by the BMP-CuA Brace. 



Basalare (Fig.44) 



Head - HP lobe weakly claviform; convex; dorsally elevated from neck; continuous with 

 neck. Apex curved ventrad. Dorsal surface polished. Ventral surface rough. BScP lobe 

 claviform: weakly concave; not elevated from neck. Dorsal surface lenticular; polished; 

 lies below the ventral margin of the HP lobe. Ventral surface rough. - Posterior Subcostal 

 Basivenale weakly deltoid to ovoid; polished. 



