See Important Footnote
List of Exotic Nematode Plant Pests
(Updated August 19, 2003) 
With suggested priority ratings for complete risk assessments (PRAs) by APHIS --
H =High; M = Moderate; L = Low Priority; 
[*] = currently on the APHIS Regulated Pest List

Table 1.  Nematodes on the list not known to occur in the USA
No.
Nematode 
Available Information Sources
Proposed Working Group Ranking*
(*see note)
DPI Cir
CIH Data
CAB CPC
Other
1 Achlysiella williamsi      
-Books: temp. tropical nema
L
2 Anguina funesta - - -
Books: temp. tropical nema
pending
3 Anguina tritici**
X
X
X
 -
pending
4 Aphelenchoides arachidis
X
X
X
 -
L
5 Bursaphelenchus cocophilus
X
X
X
 -
H
6 Bursaphelenchus mucronatus
-
-
-
LIT. CAB, AGRI DATA PPQ
L
7 Ditylenchus africanus
X
-
X
-
L
8 Ditylenchus angustus
-
X
X
-
L
9 Globodera pallida
X
X
X
-
[*]
10 Heterodera cajani
-
-
X
-
M
11 Heterodera ciceri
X
-
X
-
M
12 Heterodera delvii    
X
-
L
13 Heterodera elachista- - - -
Books: temp. tropical nema
L
14 Heterodera latipons
-
-
-
LIT. CAB, AGRI
M
15 Heterodera oryzae
-
X
X
-
L
16 Heterodera oryzicola - -
X
 -
L
17 Heterodera sacchari
-
X
X
-
M
18 Hoplolaimus indicus  
X-
X
-
L
19 Longidorus attenuatus
-
X
-
-
L
20 Meloidogyne acronea -
X
X
-
L
21 Meloidogyne arabicida
-
-
-
LIT. CAB, AGRI
L
22 Meloidogyne artiellia
X
-
-
-
M
23 Meloidogyne citri
X
-
-
-
M
24 Meloidogyne coffeicola
-
-
X
-
M
25 Meloidogyne donghaiensis
X
 - - -
M
26 Meloidogyne exigua
X
X
X
 -
M
27 Meloidogyne fallax - -
X
EPP0
M
28 Meloidogyne fujianensis
X
-
-
-
M
29 Meloidogyne indica
X
-
-
-
M
30 Meloidogyne jianyangensis
X
-
-
-
M
31 Meloidogyne kongi
X
-
-
-
M
32 Meloidogyne mali - - -
Books: temp. tropical nema
M
33 Meloidogyne mingnanica
X
      
M
34 Meloidogyne paranaensis      
LIT. CAB, AGRI
M
35 Potato pathotype of Nacobbus aberrans
X
X
H
36 Pratylenchus fallax      
Books: temp. tropical nema
L
37 Punctodera chalcoensis
-
-
X
-
M
38 Radopholus citri
-
-
-
LIT. CAB, AGRI
M
39 Rotylenchulus macrodoratus
-
-
-
LIT. CAB, AGRI
M
40 Subanguina wevelli 
-
-
-
LIT. CAB, AGRI
L
41 Thecavermiculatus andinus - - -
Books: temp. tropical nema
L
42 Xiphinema ifacolum - -
X
 -
L
** A. tritici was last observed in the U.S. in 1975