P. ekrami, 22 female paratypes
Characters | Mean | Range | SD | CV |
Length (um) | 533 | 429-632 | 52 | 9.8 |
Body width (um) | 18 | 15-24 | 2.5 | 14.2 |
A | 29 | 20-39 | 4.3 | 14.8 |
B | 6.5 | 5.0-7.8 | 0.55 | 8.5 |
B' | 4.5 | 3.6-5.0 | 0.36 | 8.0 |
C | 21 | 17-30 | 2.9 | 13.4 |
V | 80 | 79-83 | 1.3 | 1.6 |
Spear (um) | 12 | 11-13 | 0.53 | 4.4 |
Post uterine sac (um) | 32 | 30-37 | 3.0 | 9.2 |
Tail (um) | 25 | 16-27 | 2.7 | 10.8 |
Tail annules | 32 | 26-40 | 3.5 | 10.9 |
Description: Female: Body open ‘c’ shaped upon fixation,
tapering abruptly behind vulva. Lateral lines four, extending to
tail terminus, outer ones crenate. Lateral fields occupying about
1/3 mid body width. Head region continuous with rest of body, truncated
anteriorly, with three annules. Cephalic framework sclerotized, extending
posteriorly up to two body annules. Spear 11-13 um long with
rounded sloping knobs. Corpus long, almost cylindrical. Median
bulb usually post equatorial, its shape variable from narrow oval, large
rounded to bilobed. Esophageal gland lobe 36-55 um long, overlapping
intestine up to 2-3 body widths behind cardia. Opening of dorsal
esophageal gland 3-4 um from base of spear. Nerve ring at
mid isthmus. Excretory pore 74-97 um from anterior extremity
or up to 8 um anterior to 8 um posterior to esophago-intestinal
junction. Hemizonid just anterior to excretory pore. Spermatheca
elongate oval, 18-37 x 10-15 um, usually filled with sperm.
Tricolumella well developed. Vulva a transverse slit located at 77-83%
of body length. Post vulval uterine sac 30-37 um long, occupying
27-36% of vulva-anus distance, usually with 2-3 differentiated cells.
Anal body diameter 9-14 um. Tail elongated conoid to subcylindrical,
1.9-3.0 anal body widths long with 26-40 tail annules. Tail tip narrowly
to broadly rounded, may be truncated with a mucron-like process of bifid.
Phasmids anterior to middle of tail.
Male: Spicules 15 um long. Gubernaculum trough-shaped,
7-8 um long. Phasmids extending into smooth or crenate caudal
alae. Tail tip pointed to bifid.
Type host and locality: Soil and root of Pyrus malus
L. from horticultural farm, Dept. of Horticulture, H.A.U., Hissar,
India.
Type specimens: Holotype mounted on slide No. 1, Pratylenchus
ekrami n. sp.; paratypes on slides Nos. 2-8. Holotype and 18
female and 6 male paratypes deposited.