51 



Hybosoridae 



Introduction 



The Hybosoridae are a large variable cosmopolitan family which is best represented in 

 the tropics (Scholtz 1990). This family contains 28 genera and 275 species (Allsop 1984; 

 Kuijten 1986). 



Hind Wing Articulation Description 



First Axillary (Fig. 80) 



Head - Dorsal surface normal size; convex; clavate. Antero-dorsal margin oriented 

 moderately postero-distad; normal width; weakly deplanate. Antero -proximal margin very 

 strongly enlarged ventrally. Postero -proximal margin weakly enlarged proximally. FSc2 

 base normal width; long. Apex oriented anteriad; moderately narrow. Anterior surface 

 broad; very long; not waisted medially. FScl very weak; very small; slender; fused to the 

 proximal margin of the ventrad projection. Dorsal and ventral surfaces convex. Apex acute. 

 Ventral projection tapers from base to apex; short but of average width; deeply concave; 

 oriented disto-ventrad and curved posteriad. Dorsal surface concave. Ventral surface 

 convex. Apex narrow and broadly truncate. Concavity located in the preapical area; 

 surrounded by three unequally strong ridges. Distal embayment oriented dorsad; narrow; 

 concave. FSc2 oriented strongly dorsad and weakly distad; deltoid; very convex; broad. 

 Dorsal surface convex. Ventral surface convex. Apex aciculate. Dorsal margin not 

 enlarged. Head and neck dorsal surface strongly curved dorsad. 



Neck normal width and length; weakly oriented antero-distad; broadly articulated with 

 2Ax; continuous with tail. Proximal margin moderately curved ventrad. Distal margin 

 concave. Distal embayment concave; moderately broad. 



Tail - Dorsal view: Proximal arch normal size; weakly extended posteriad and proximad; 

 weakly convex. Apex very weakly curved ventrad. Dorsal surface weakly concave. Antero- 

 proximal margin concave. Postero-proximal margin convex. Articulation with PRR 

 extends along the entire length of the proximal arch; strong; long and moderately broad; 

 moderately recurved. Antero-dorsal and postero-dorsal surfaces concave. Posterior margin 

 concave. Distal arch normal size. Apex very weakly curved ventrad and posteriad; 

 aciculate. Distal margin straight. - Ventral view: Proximal arch with a weak ridge. Distal 

 arch with a very small ridge. Posterior margin with a prominent but slender ridge. 



Second Axillary (Fig.81) 



Radial Fulcalare weakly sclerotized; slender. 



Ridges - Dorsal view: Proximal ridge entire; distinct from lobe. Apex narrow. Anterior to 

 median section obscured by the distal ridge. Median to posterior section strongly enlarged 

 above the distal ridge. Posterior section moderately enlarged above the distal ridge; 

 oriented posteriad; slender; moderately long; distinct from lobe and moderately extended 

 past the posterior margin of lobe. Distal ridge distinct from lobe. Apex not fused to the 

 proximal ridge apex; oriented ventrad; convex; spatulate; moderately short. Anterior 



