75 



reduced by a greatly enlarged br; discontinuous with the anterior margin of BR. Median 

 narrow. Posterior 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 elevated above the posterior margin 

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

 arch. Embayment extremely narrow. 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 small, deltoid extension; oriented antero-ventrad. 



Second Basal Plate (Fig. 120) 



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; strongly 

 shifted distad; slender; equally broad along the entire length: convex; arises and extends 

 postero-distad from the MP-BMP junction. Terminus appears fused with the base of BCuA 

 but actually fuses with the distal margin of BCuA. Point of fusion continuous. 

 Medial Basivenalia very strongly reduced on all margins; extremely narrow and long: 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 broad. Apex spatulate: curved antero-ventrad 

 beneath the BR proximal arch. Distal arch indistinct; continuous with the anterior margins 

 of both BMP and the BMP-BCuA brace. BMP junction with BMA continuous and 

 narrowly tubular; fused to the BMP-BCuA brace to form a narrow, looping tube; separated 

 from both IBP and BCu by membrane: anterior margin strongly convex; extremely narrow; 

 strongly elevated dorsad. Postero-distal section absent. 



Cubital Basivenalia moderately narrowly fused; small and ovoid. Postero-proximal margin 

 of BCuA fused with the antero-proximal margin of BCuP. Suture line present. BCuA small 

 and ovoid; convex; oriented antero-distad; strongly shifted anteriad to occupy the postero- 

 distal section of 2BP: moderately sclerotized. Distal margin anteriad of the antero-proximal 

 margin of CuA. BCuP moderately small: ovoid: long: convex: oriented postero-distad; 

 weakly sclerotized. Distal embayment small. - Cubitus Anterior discontinuous with BCuA. 



Basalare (Fig. 121) 



Head - HP lobe slender; continuous w ith neck. Apex narrowly rounded. Dorsal surface 

 strongly elevated from neck; not polished. BScP lobe broad: claviform: projects posteriad 

 from neck. Dorsal surface ovoid; strongly convex: polished; elevated from neck but not 

 as elevated as the HP lobe. Ventral surface not polished. - Posterior Subcostal Basivenale 

 broadly deltoid; polished. 



Discussion 



Although Aulonocneminae do not exhibit any autapomorphic character states of the wing 

 articulation and wing base, they do share seven derived character states of the wing 



