1.
.
Anterior clypeal margin with medial series of small teeth, appearing serrate (Fig. 1)

Saprositellus Balthasar

 

1'.

Anterior clypeal margin entire, lacking teeth (Fig. 2)
2
Figure 1. Saprositellus ariquemes.
Figure 2. Saprolonchus tambopatae.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
2(1).
.
.
Pronotum with coarse punctures restricted to broad transverse depression along basal third, anterior 2/3 swollen and finely punctate (Fig. 3)

.
Stebnickiella
Skelley

Figure 3. Stebnickella zosterixys.

2'.
.

Pronotum with punctures evenly distributed, base lacking broad transverse depression
.
3
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
3(2).
.
.
.
.
Body elongate, surface argillaceous; head with punctures evenly distributed, obscured by argillaceous coating (Fig. 4); pronotum with 2 medial longitudinal ridges; alternate elytral intervals weakly carinate

...
.

.
.Amerilochus Skelley

 

3'.
.
.
.
.
.

Body stout, surface not argillaceous, can be somewhat dulled (alutaceous)or glossy; head with band of large punctures at base, extremely fine punctures anteriorly (Fig. 2); pronotum evenly convex, lacking longitudinal ridges; elytral intervals similarly developed .
Figure 2. Saprolonchus tambopatae.
Figure 4. Amerilochus cinereus.