A KEY TO THE GENERA OF HOPLOLAIMINAE 

 (From Andrassy, 193B) 



1. Phasmids normal, small, pore-like: Rotylenchus genus - group 2 

 Phasmids extremely large, scutellum-like: Hoplolaimus genus - group h 



2. Opening of dorsal esophageal gland about 1/2 spear length from base 

 of knobs of spear: Helicotylenchus Steiner 



Opening of dorsal esophageal gland not more than l/3 spear length 

 from base of knobs of spear: 3 



3. Lip region marked by annules divided into numerous small sections; 

 gubernaculum bearing titillae: Ro tylenchus Filipjev 



Lip region with transverse annules onlyj gubernaculum without 

 titillae: Gottholdsteineria n. gen. 



h. All three fields of lateral field aerolated by transverse striae j 

 spear knobs anteriorly furcate and pointed: Hoplolaimus Daday 



Center field of lateral field smooth, without transverse striaej, 

 spear knobs rounded: Scutellonema n. gen. 



I. Rotylenchus genus-group 



A. Ro tylenchus Filipjev, 1936 



R. robustus (de Man, I876) Filipjev, 1936 (Type for the genus) 

 syn: Tylenchus robustus de Man, I876 



Tylenchorhynchus robus tus (de Man, I876) Micqletzky, 



1921 partim 

 Hoplolaimus uniformis Thorne, I9I4.9 



B. Helico tylenchus Steiner, 19U5 



H. africanus Micoletzky n. comb. 



syn: Tylenchus africanus Micoletzky, 1915 



Tylenchorhynchus africanus (Micoletzky, 1915) Schuvirmans- 



Stekhoven and Teunissen, 1938 

 Rotylenchus africanus (Micoletzky, 1915) Filipjev and 

 Schuiirmans-Stekhoven, 19Ul 

 H. erythrinae (Zimmermaan, 190ij) Golden, 1956 

 syn: Tylenchus erythrinae Zimmermann, 190U 

 Tylenchus psuedorobus tus Steiner, 191)| 

 Aphelenchus dubius var. peruensis Steiner, 1920 

 Tylenchus spiralis Cassidy, 1930 



