23. 



Genus Cervidellus Thome, 1937 

 (Key to the species from Allen, 1950) 



1. Cephalic prcbolae serrate, edges sclerotized 2 



Cephalic probolae not serrate, but flap-like U 



2. Labial probolae bifurcate l/U their length 



serricephalus (Thojme, 192^) Thome, 1937 



Labial probolae bifurcate 1/2 their length 3 



3. Branches of labial probolae slender, not rebranched 



serratus (Thome, 192^) Thome, 1937 



Branches of labial probolae rebranched, 1 forward and 2 backward 

 pointing branches . . . .(genotype) cervus (Thome, 1925) Thome, 1937 



U. Labial probolae doubly furcate, terminal branches recurved 



hamatus Thome, 1937 



Labial probolae bifurcate only 5 



5. Labial probolae bifurcate 3/U their length, branches recurved 



ankyrus (Thome, 1925) Thorne, 1937 



Labial probolae bifurcate less than 1/2 their length 6 



6. Cephalic axils with sclerotized points at base 



similis (Thorne, 1925) Thome, 1937 



Cephalic axils without sclerotized points 7 



7. Cephalic probolae ending in bristle-like points 8 



Cephalic probolae flap-like, bifurcate 



insubricus (Steiner, 19lU) Thome, 1937 



8. Gubemaculum triangular in shape 



kruguelensis (Steiner, 1916) Thome, 1937 



Gubemaculum slender, not triangular 



vexilliger (de Man, 1880) Thome, 1937 



Genus Stegelleta Thome, 1938 

 (Key to the species from Allen, 1950) 



1. Cephalic probolae low and rounded . incisa (Thome, 1937) Thorne, 1938 

 Cephalic probolae flap-like, pointed 2 



2. Labial probolae bifurcate 1/2 their length, outer branches recurved 



cancellata (Thorne, 1925) Thorne, 1938 



Labial probolae bristle-like, bifurcate l/U their length, branches 

 not recurved lineata (Thorne, 1925) Thorne, 1938 



