| 37. |
Oral aperture truncate; (a = 22 - 31, b = 4.9 - 7.2); tail
with 18 - 23 annules; tail terminus without any indentation
|
P. sudanensis Loof & Yassin 1971
|
| 37. |
Oral aperture slightly depressed; ( a = 18 - 24, b = 3.4
- 4.7); tail with 15 - 19 annules; tail terminus indented |
P. emarginatus Eroshenko, 1978
|
|
| 38. |
Posterior uterine branch short, undifferentiated;
body long and slender; average a = more than 25
|
.................39 |
| 38. |
Posterior uterine branch longer with cellular distal part;
body short and stout; average a = 25 or less |
.................40 |
|
| 39. |
Lip region low, slightly set off; oral aperture with six
adjoining sensilla; in en face view bv SEM the dorsal and ventral segments
of oral disk are either hexaradiate or dumbbell shape; stylet 15 - 17 um
long; a= 21 - 31 (26)
|
P. penetrans(Cobb,
1917) Filipjev & Shuurmans Stekhoven, 1941
|
| 39. |
Lip region high, continuous; oral aperture oval, surrounded
by six small pores; in en face view by SEM the subdorsal and subventral
segments of oral disk fused to produce a pandurate outline; stylet 14 -
16 um long; a = 24 - 31 (27) |
P. mediterraneous Corbett, 1983
|
|
| 40. |
Lip region low, flat; stylet 15 - 16.5 um long with
spherical knobs; vulva at 80% (78 -83); tip rounded; a = 18 - 27 (24)
|
P. subpenetrans
Taylor
& Jenkins, 1957
|
| 40. |
Lip region high, dome-shaped; stylet 15 - 15
um long with wide forwardly directed knobs; vulva at 74 - 80%; tail
tip pointed;a = 20 - 30 |
P.kralli Ryss, 1982
|
|
| 41. |
Tail subcylindrical to cylindrical-conoid; terminus round
to truncate
|
...............42 |
| 41. |
Tail conoid, tapering to narrow, rounded terminus |
...............55 |
|
| 42. |
Lip region high, continuous; body contracted ventrally
behind vulva; tail terminus bluntly rounded to truncate; vulva at 73 -
80%
|
P. thornei Sher
& Allen. 1953
|
| 42. |
Lip region not conspicuously high, slightly set off, occasionally
continuous or dome-shaped; Body not contracted behind vulva; tail subcylindrical
to cylindrical conoid, conical or obtuse, occasionally with a terminal
process |
..............43 |
|
|
to
see Picture Comparisons of characters
