102 (100) Thorax with fovea on each side behind middle; para- 

 meres of male neither decurved nor recurved near 

 apex (Figs 109, 110); brown to black; 4.5-6.3 mm 



long, 2-3 mm wide Heliahus striatus 103 



Thorax without foveae 104 



105 



109 



108 



Figs 105-114 Aedeagus of Heliahus species: 105- H, hasalis, dorsal 

 aspect; 106- H. basalis, left lateral aspect; 107- H. fastigiatus^ 

 dorsal aspect; 108- H. fastigiatuSj left lateral aspect; 109- H. 

 striatus J dorsal aspect; 110- H. striatus j left lateral aspect; 

 111- H. triangularis, dorsal aspect; 112- H. triangularis, left 

 lateral aspect; 113- H. suturalis, dorsal aspect; 114- E. suturalis, 

 left lateral aspect (all from Musgrave) . 



103 (102) Elytron with alternate intervals more convex or 



raised: Heliahus striatus striatus 



Elytron with intervals uniformly convex: 



Heliahus striatus foveatus 



104 (102) Elytron uniformly and granularly pubescent; para- 



meres of male slightly recurved (turned upward) near 

 apex and not acutely pointed at tips; basal piece 

 conspicuously curved (Figs 111, 112); gray or brown 

 to black; 5-6.1 mm long, 2.25-2.6 mm wide: 



Heliahus triangularis 

 Elytron with sutural interval less pubescent; para- 

 meres more elongate, decurved toward apex, acutely 

 pointed as seen in dorsal aspect; basal piece not 

 conspicuously curved (Figs 113, 114); reddish brown 

 to black, quite variable in size and general aspect, 

 about 3.6-5.3 mm long, 1.7-2.3 mm wide (much smaller 

 than listed here in parts of Mexico and central 

 America) : Heliahus suturalis 



49 



