ino. 



Subfamily DES-IOOORINAK Micoletzky, 1922) 

 (Partial key to the f^enera after Chitwood, 19^1) 



!• Helmet with longitudinal markings or laterally etched 2 



Helmet not internally etched nor with longitudinal markings .... 3 



2. Helmet with longitudinal markings . . . Ichthyodesmodora Chitwood, l<:'5l 

 Helmet internally etched Desmodorella Cobb, 1933 



3. Amphids circular U 



Amphids spiral 8 



k> Amphids single contour Xenonema Cobb, 1933 



Amphids double contour 5 



5. Teeth present Acanthopharyngoides Chitwood, 1936 



Teeth absont. 6 



6. Setae (h) at base of helmet Bolbonema Cobb, 1920 



Setae (h) papilloid, at anterior part of helmet 7 



7. Helmet wider than long Micromicron Cobb, 1920 



Helmet narrower than long Antomicron Cobb, 1920 



8. Helmet setae numerous 9 



Helmet setae few (l). (Soil!) Amohispira Cobb, 1920 



9. Helmet setae U + 8 Heterodesraadora Micoletzky, 192U 



Helmet setae more nimierous Croconema Cobb, 1920 



Others: 



A canthopha rynx Marion, 1870 



Desmodora de Man, 1889 a 



Paradesmodora Stekhoven, 19^0 



BrachydestT'odora 



Zalonema Cobb, 1920 



Xanthodo'ra Cobb, 1920 



Mastodex Steiner, 1920 - listed as a syn. of Croconem a by Wieser, 



19^11 



Aculeonchus Kreis, 1926 - listed as a syn. of Croconema by 



Wieser, 195U. 



