1^3. 



Family DIP4TH^K0PH0HIDAT? Thorne, 193'^ 

 (Key to the subfamilies from Thorne, 1939) 



Spear with basal knobs, distally of complicated, arch-like structure 



, . , , o , . . , DIPHTHEMOPHOHINATi: l^icoletzky, 1922 P. 163 



Spear without basal knobs, slender, elongated 



TRIChODORINAi^] Thorne, 1935 °-l^'H 



(Contains a single subfamily THICHCDOPINAE Thome, 1935) 



Subfamily DIPHTHhHOPHORINAF Micoletzky, 1922 

 (Key to the genera from Thorne, 1939) 



1. Amphid apertures oosterior to sopar 

 Brach:/nemella (Cobb, 1893) Cobb, 1933 



(Contains a single species B. obtusa (Cobb, 1893) Cobb, 1933) 

 Amphid apertures ne.-r base of lips 2 



2. Arch-like structure occupying less than half of spear length 



Diphtherophora de Man, 1880 P.l'^^ 



Arch-like structure occupying more than half of spear length 



. Triplonchium Cobb, 1920 P. 1(^5 



Genus Diphtherophora de Nan, 1880 

 (Key to the species from Thorne, 1939) 



1. Esophageal enlargement subcylindroid vanoyei de Coninck, 1931 



Esophageal enlargement pyriform or elongate- conoid. T 2 



2. Neck short; b = 6 brevicolle Thorne, 1939 



Neck longer; b near U 3 



3. Tail length about equal to anal body diameter . . .obesus Thome, 1939 

 Tail length nearly twice, or more than, anal body diameter U 



1;. Cuticle very thick forminp- membrane-like folds 



..... perplexans (Cobb, 1913) de Coninck, 1931 



Other species: D. oseudoperplpxa ns (van der Linde, I'^OQ) Ooodey, 1951 



