%. 



Genus An_^uina Scopoli, 1773 

 (Key to the species tiodii'ied fiom Filipj. -i^ Stekh., 19lil) 



1. Median esophageal bulb absent 



cecidoplas tes (Goodej/, 193U) l^'ilipjev, 1936 



Median esophageal bulb present \ 2 



2, Median bulb not distinct 



riiLcrolaenae (Fawcett, 1938) Filipj. & Stekh., 19UI 



Median bulb distinct 3 



3« Tail obtusely rounded at apex; head not offset. •• •.• 



tritici (Steinbuch, 1799) Filipjev, 1936 



Tail pointed at tip U 



h' Tail regularly conical 5 



Tail swollen, although this swelling is sometimes feeble 8 



5. Bursa quite wrapping in the tail; esophageal glands not enlarged; 

 posterior esophageal bulb not swollen ... . spermophaga Steiner, 1937 

 Bursa almost wrapping in the tail 6 



6, Esophageal glands much enlarged, posterior esophageal bulb strongly 

 swollen; spicula flat, widest in the middle, slightly arcuate .... 



agrosti s (Steinbuch, 1799) Filipjev, 19 36 



Esophageal glands hardly swollen; no definite posterior bulb 7 



7. Spicula regularly tapering to 1he tips 



tumefaciens (Cobb, 1932) Filipj. & Stekh., 1911 



Spicula widened in the middle . austral! s Steiner, 19 UO 



8, Spicula distinctly longer than anal diameter, provided with a narrow 



sheath graminis (Hardy, 18^0) Filipjev, 1936 



Spicula shorter than anal diameter, very broad. ...... 



inillefolii (Low, I87I1) Filipjev, 1936 



Other species: 



A., balsamophila (Thorne, 1926) Filipjev, 1936 

 A. pustulicola (Thorne, 193^) Qoodey, 1951 



Genus Sychnotylenchus Ruhm, 1956 

 (Key to species) 



1. Length more than 1.0 mm; tail conoid; terminus rounded to pointed 



ulmi Ruhrrt, 1956 



Length less than 1.0 mm; tail cylindroid; terminus truncate 

 intricati Ruhm, 1956 



