68. 



Superfainily APHK,LMGHOIDfrA (lAichs, 1937) Thorne, 19I19 



Due to the diversity and inaccGssibility to all the literature o-ii'- 

 taining to the Aphelenchoidea, coinolet^, uD-to-date keys could not be 

 included in this syllabus. However, a rather tentative key has been 

 constructed to the various groups of Aphelenchs following the systematics 

 of Chitwood, 1953, as presented to the 1-th International Conq;ress of 

 Zoology. A section in the listing of reference deals specifically with 

 literature pertinent to ths classification of this group at and above tme 

 generic level. Thus, it is hoped that one may recognize at least those 

 genera found in the soil in association with plant life. 



Superfaraily APHl'X^'ltlCHOIDRlA (Fuchs, 1937) Thorne, 19U9 

 (Tentative key to fafnilies) 



1. Female uterus prolapsed 



". . . ^ SPHAFRITLARTIDAE (Lubbock, 1361) Skarbilovich, I9U7 



(Contains 2 or 3 genera; Sphaerularia Dufour, 1837 j Tripius, 

 Chitwood, 1935 and questionably Scatonema , Bovien, 1932.) 



Female uterus not prolapsed 2 



2. Male with a bursa with h pairs of ribs or oapillae 

 APH^iLENCHIDAE Steiner, 19h9 



(Contains a single p:enusj Aohelenchus Bastian, 1865) 

 Male without a bursa. . A?HT2.^NCH0IDIDaE (Fuchs, 1937) Pararaonov, 1957 P. 68 

 A small bursa-like membrc^ne but without ribs and or papillae is 

 located on the tail tio of some species of Aohelenchoides (in the 

 subgenus Rursaohelenchns) . 



Family APHSLEInICHOIDIDAE ( Fuchs, 1937) Paramonov, 1957 

 (Tentative key to subfamilies) 



Posterior portion of esophagus a distinct structure containing the 

 esophageal glands and not overlapping the intestine 



"... PA HAPHfiiElM CHIME T. Goodey, 1951 P. 69 



Posterior portion of esophagus not a distinct glandular bulb, 

 esophageal glands considerably overlanoing the beginning of the in- 

 testine . ." APHELENCHOIDINAE (Fuchs, 1937) P.69 



Skarbilovitch, 191*7 and PArtASITAPHELENGHINAE Ruhm, 1956 p.69 



