37 



distal margin strongly curved ventrad. FJ+AXJ slender; weakly concave. AXA strongly 

 sclerotized; occupies about two-thirds of the tail area; straight. Suture line between FJ and 

 AXJ absent. Suture line between FJ+AXJ and AXA present. Suture line between AXA 

 and AXCu present. 



Hind Wing Base Description 



First Basal Plate (Fig. 56) 



Humeral Plate slender: lies distant from BScA. Anterior margin weakly sinuate; 

 moderately sclerotized. Apex weakly curved ventrad. Dorsal margin weakly sinuate. Apex 

 concave. Ventral margin weakly sinuate. Suture line between FPC+BPC and FC+BC 

 present. 



Anterior Subcostal Basivenale deltoid; convex; oriented distad. Proximal and distal 

 sections separated by a distinct suture. Proximal section as large as the distal section. Apex 

 broadly rounded. Postero-proximal margin with an embayment. Distal margin separated 

 from ScA bulge by a deep concavity. - Subcosta Anterior weakly convex. Bulge very- 

 broad. 



Radial Basivenale very weakly convex: broadly open; oriented antero-proximad; 

 continuous with radial stem. Proximal arch slenderly deltoid; small; straight; continuous 

 with the anterior section of BR: directed posteriad. Postero-distal section rounded. Anterior 

 margin straight: very narrow: only medially weakly elevated dorsad. Embayment normal 

 size. Distal arch absent, br weak but present: very slender; moderately sclerotized; 

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



Second Basal Plate (Fig. 57) 



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

 arises from below the distal plate. - Crimp Patterns weak to moderately strong; found on 

 MP and the antero-distal section of 2BP. Crimps are weakly convex; margined by 

 impressions; dense proximally, sparse distally. - BMP-CuA Brace present; moderately thin; 

 convex; distant from distal margin of 2BP: extends postero-proximad from 2BP. Anterior 

 entire; fused to the postero-proximal corner of MP and the antero-distal corner of BMP. 

 Point of fusion continuous. Posterior discontinuous with CuA; fused to the antero-proximal 

 angle of CuA. Point of fusion marked by a suture line. - BMP-BCuA Brace absent. - 

 False BMP-BCuA Brace present as a moderately broad and strongly convex tube extending 

 along the distal margin of 2BP. Anterior margin with overlapping plates. Posterior margin 

 terminates adjacent to. but not touching or fused with, BCuA. 



Medial Basivenalia - General habitus: very large; broad and long. Anterior and posterior 

 margins distally weakly concave. BMA broadly scaphoid; completely fused to BMP. 

 Proximal and medial surfaces flat. Distal surface convex. Anterior margin weakly 

 concave. Proximal arch weakly convex and straight; enlarged antero-proximally; deltoid 

 to weakly allantoid. Distal arch weakly distinct. BMP rectangular; convex: distinct from 

 brace: separated from both IBP and BCu. Proximal section weakly convex; separated from 

 BMA by a shallow concavity. Po stem -median section concave. Antero-distal section 

 formed as a large, rectangular convexity; distinct from the postero-distal section. Distal 



