66 (63) 



67 (66) 



Pronotum with a transverse impression at anterior two- 

 fifths; mandible with a lateral lobe as in Fig. 5; 

 epipleuron without tomentum; small, less than 2.3 mm 

 long (Fig. 70) Microoylloepus 



Pronotum without such a transverse impression; mandible 

 without a lateral lobe; epipleuron with tomentum; 

 larger, at least 2.3 mm long (Fig. 68).... Cylloepus . . 



68 



67 



Pronotum wider than long; fifth elytral interval not 

 carinate; metastemum with a short carina at middle 

 near posterior margin; black, elytron usually with two 

 large reddish spots; 2.3-3 mm long; 1.2 mm wide (Figs 

 68, 69) : Cylloepus parkeri 



Pronotum slightly longer than wide; fifth elytral interval 

 partly carinate; metasternum depressed but without a 

 posterior median carina; reddish brown to black; 3.5- 

 4.3 mm long, 1.5-1.65 mm wide: Cylloepus abnormis 



Figs 68-69 Cylloepus parkevi adult: 68- dorsal; 69- ventral. 



68 (66) Pronotum longer than wide; wing usually reduced, 



shorter than elytron; from warm springs 69 



Pronotum usually wider than long; wing functional, 



when extended longer than elytron; 1.65-2.2 mm long, 

 0.68-0.9 mm wide (Fig. 70).., Microoylloepus pusillus . . . 72 



69 (68) Elytron with 1 sublateral carina; elytra only slightly 



wider than pronotum; sculpturing of pronotum reduced; 

 black; 1.4-1.7 mm long, 0.5 mm wide; from warm spring in 

 northwestern Nevada: Microoylloepus thermarum 



Elytron with 2 sublateral carinae; elytra distinctly 



wider than pronotum; reddish to black 70 



40 



