74 



Median Plate (Fig. 117) 



FM1 oriented strongly postero-distad. Anterior narrow. Median to posterior moderately 

 narrow. Proximal margin convex. Articulation with 2Ax extends from the antero-distal 

 margin of the distal lobe to the posterior section over the posterior section of the ventral 

 ridge. Distal margin broadly but weakly fused to 3Ax. FM2 absent. 



Third Axillary (Fig. 11 8) 



Head weakly convex; strikingly reduced posteriorly. Proximal margin shallowly concave. 

 Anterior margin weakly concave; broad; enlarged ventrally. Antero-proximal margin not 

 extended anteriad. Antero-distal margin extended distad. FCu normal size; distinct; 

 occupies two-thirds of the head; ovoid. Proximal margin not reduced by AXCu. Posterior 

 margin weakly reduced by an enlarged AXCu. Distal margin reduced by an enlarged FA. 

 FA moderately small; extended proximad. Anterior margin entire. AXCu weakly extended 

 anteriad onto head. Suture line between FCu and FA present. Suture line between FCu 

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



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

 entire neck. Proximal margin very strongly and extensively elevated as a narrow ridge. 

 Ridge extends close to the postero-proximal margin of the tail; very long. Dorsal surface 

 of ridge is weakly curved distad; enlarged dorsally relative to AXA. Embayment 

 moderately deep. Prong armed with a single short tooth; oriented proximo-dorsad; narrow. 

 Detached AXCu fragment slender; rectangular; weakly sclerotized. 

 Tail reduced; moderately deltoid; short. Dorsal surface oriented mesad. Anterior to 

 posterior concave. 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. 11 9) 



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

 BScA. Apex clavate; curved ventrad. Dorsal margin sinuate. Proximal margin convex; 

 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. Distal section 

 continuous with ScA bulge; separated by a deep concavity. Apex broadly spatulate; 

 strongly curved ventrad beneath the postero-proximal margin of the ScA bulge. - Subcosta 

 Anterior weakly convex. Bulge narrow. 



Radial Basivenale extremely broad but very short; convex; narrowly open; discontinuous 

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

 with proximal and distal extensions; angled posteriad; broadly deltoid. Anterior strikingly 



