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Genus Paratylenchus Micoletzky, 1922 

 (Key to the species from Tarjan, in press) 



1. Males with distinct stylet 2 



Males without stylet or males not observed 3 



2. Anterior end narrow, tapering j spear U8-56u in length 



, goodeyi Oostenbrink, 19^3 



Anterior end more normal; spear 30u or less. Protrusible spicula 

 sheath bearing a posterior hook-like process 

 ,,.. hamatus Thome and Allen, 1950 



3. Stylet length greater than U5 U 



Stylet length less than U5 5 



U. Larval stylet length as great as 67u, b= less than 3 



, anceps Cobb, 1923 



Stylet length 56u, b= greater than 3 ....... tanyoganis n. sp. 



5. Maximum body length of population 310u or less. , . , , 6 



Maximum body length of popiilation greater than 310u 9 



6- Vulva usually situated at 70-80^ of body length; post-vulvar annules 



numbering about 70 minus eulus n. sp. 



Vulva usually situated at 80-86^ of body length; post-vulvar annules 

 less than 70. . . 7 



7. Post-vulvar uterus sac present. . . besoekianus Billy and Reydon, 1931 

 Post-vulvar uterus sac absent . 8 



8. Male with protruding anal lips 



minutus Linford in Linford, Oliveira, and Ishii, 19U9 



Male with normal anus elachisius Steiner, 19U9 



9. Spear length 32-36u 10 



Spear length 27u or less 11 



10. Spear length 3U-36u, vulva at 82-83/^; spermatheca present; lip region 



not offset. nanus Cobb, 1923 



Spear length 32u, vulva at 83-875^J spermatheca absent; lip region 

 offset projectus Jenkins, 19?6 



11. Short post-vulvar uterus sac present, b= U.3 



, bukowinensis Micoletzky, 1922 



Post-vulvar uterus sac absent 12 



12. Tail short (c= 16. 5) J anterior end narrowing sharply near stylet 

 guide; lip region strongly truncated. . curvitatus van der Linde, 1938 

 Tail relatively longer (c= 12.7); anterior end not narrowing sharply; 

 lip region not as strongly triincated 

 dianthus Jenkins and Taylor, 19$6 



