79 



the postero-proximal section of the tail; strongly reduced; extremely small; straight. Suture 

 line between AXA and AXCu present. 



Hind Wing Base Description 



First Basal Plate (Fig. 126) 



Humeral Plate very broad. Anterior margin weakly sinuate; weakly sclerotized; lies 

 adjacent to BScA. Apex broad; curved ventrad. Dorsal margin sinuate. Proximal margin 

 straight; strongly ' curved proximo-ventrad. Ventral margin weakly concave. Suture line 

 between FPC+BPC and FC+BC absent. 



Anterior Subcostal Basivenale oriented distad; slenderly ovoid; convex; strongly elevated 

 dorsad. Proximal and distal sections separated by a prominent suture. Proximal section 

 extended as a very narrow convexity; about as large as the distal section. Posterior margin 

 deeply concave. Distal section extremely narrow and long; continuous with ScA bulge; 

 separated by a deep concavity. Antero-distal to medio-distal margin separated from ScA 

 by a deep concavity. Apex broadly spatulate; deeply concave; strongly curved ventrad 

 beneath the postero-proximal margin of the ScA bulge. - Subcosta Anterior very strongly 

 convex. Bulge extremely broad. 



Radial Basivenale extremely broad but very short; convex; open; discontinuous with the 

 radial stem; angled proximad; slenderly ovoid. Proximal arch strikingly enlarged; with 

 proximal and distal extensions; angled posteriad; broadly deltoid. Distal extension 

 strikingly enlarged antero- to postero-distally. Anterior section strikingly reduced by a 

 greatly enlarged br; discontinuous with the anterior margin of BR. Median section narrow. 

 Posterior section extremely broad; moderately extended proximad and very strongly 

 extended distad. Posterior margin concave; surrounds the terminus of the BMA proximal 

 arch. Postero-distal margin rounded. Anterior margin not elevated above the posterior 

 margin of the ScA bulge; extremely narrow; convex; angled proximad; continuous with 

 the distal arch. Embayment strikingly narrow and falcate. Distal arch present; convex; 

 broadly curved proximad; discontinuous with the radial stem; recurved, br strongly 

 sclerotized; large; occupies one-half of the proximal arch; discontinuous with BR; 

 posteriorly extended proximad. br projection distinct from BSc as a slender, dove-tail 

 shaped extension; oriented antero-ventrad. 



Second Basal Plate (Fig. 127) 



MA-BMA Junction absent. - MP-BMP Junction: MP continuous with BMP on all margins. 

 - Crimp Patterns absent. - BMP-CuA Brace absent. - BMP-BCuA Brace present but 

 modified; broadly continuous with BMP; entire but only moderately strong; shifted distad; 

 slender; equally broad along the entire length; convex; arises and extends postero-distad 

 from the MP-BMP junction. Terminus fused with the distal margin of BCuA. Point of 

 fusion discontinuous. 



Medial Basivenalia very strongly reduced on all margins; extremely short and narrow; 

 tube-shaped. BMA very narrowly scaphoid; long; strongly convex along all margins; 

 completely fused to BMP. Anterior margin moderately concave. Proximal arch planate; 

 straight but strongly curved ventrad; long; moderately narrow. Apex narrowly spatulate; 



