r-^1. 



Genus Tylen^jp^ Bastian, l86i> 

 (Key to the subgenera froia Andras.'^y, 19%) 



1. Cuticle well annulated; spear heavy and well knobbed; infr,tacorpus 



round 2 



Cuticle finely annulatedj spear weai<:ly developed; metacorpus oval . . 

 3 



2. Head hardly offset, tail relatively short, ventrally hooked 



Tylenchus (Bastian, l865) Andrassy, 195U 



Head well offset, Annules remarkably pronounced, tail thin and atten- 

 uated A^lenchus Andrassy, 195U 



3. Average sized species. Annules clear'. Bursa well developed. • « » . 



Filenchus Andrapsy, 19514 



Small species. Annules very fine. Bursa rudiraentary 



L elenchus Andrassy, 19Sh 



Subgenus Tylenchus (Bastian, 186^) Andrassy, 19$h 

 (Key to tlie species from Andrassy, 195U) 



1. Cuticle marked with annules ;md lon^p-tudinal fields 2 



Cuticle mthout lont;;itudinal ridt^es 3 



2, I8-2U longitudinal ridges; postvulval uterine sic ver.v sJiort or tiiiss- 



ing; males unknown costatus de Han, 1921 



Always only 10 longitudinal ridges; postvulval uterine sac about 2 

 body ^^7idths long; males appear to be as niuaerous as females ...... 



sachsi HirEcl"mia.nn, 19 



3. Spear very delicate, not (or hardly noticeably) knobbed Ii 



Spear strong or xjeak, in the latter cnse the knobs are evident. . . .8 



U» Bursa very rudimentary; small animals (about O.U mrii) 5 



Bursa normal, well developed; large animals (over O.I4 mm) .6 



5. Tail finely attenuated, ver;- long {r.= 3 •1-3. 5); spear very delicate, 



3.5-U.O u infirmns (Andrassy, 1952) Andrassy, 19?U 



Tail not so long, shorter (c=i;. 8-6,5); spear longer, G-9 u long . . . 

 minutus Cobb, 1893 



6. Cuticle very coarsely annulated; gubernaculuia obscure 



vreidenbachi RaJuii, 192h 



Cuticle finely annulated; gubcrnaculum clear 7 



7. Cuticle finely annulated ( annul e vjidth 0.9-1.2u); tail long and thin 



(c = 3.7-)4.5) liliforMis Butschili,l873 



Cuticle annules wide and even ( armule width 1.7-1.8 u); tail shorter 



not so finely attenuated (c = 5.3-10.0) 



p olyh;^'}nus Stetner (\ .llbin, I9U6 



