Aphelenchoides fragariae
Spring crimp nematode
(Ritzema Bos, 1891) Christie, 1932
Aphelenchus fragariae (Ritzema Bos
Aphelenchus olesistus Ritzema Bos, 1893
Aphelenchoides olesistus (Ritzema Bos) Steiner, 1932
Aphelenchus olesistus var. longicollis Schwartz, 1911
  Aphelenchoides olesistus var. longicollis (Schwartz) Goodey, 1933
Aphelenchus pseudolesistus Goodey, 1928
Aphelenchoides pseudolesistus (Goodey) Goodey, 1933

Female:  0.45-0.8 mm; a = 45-60; b = 9-11; c = 12-22; V = 64-71
Male:  0.48-0.65 mm; a = 46-63; b = 9-11; c = 16-19; T = 44-61

Body slender, cylindroid, tapering near extremities.  Lateral field a narrow band occupying about one-seventh of body width, marked by two lines.  Lip region almost continuous with head contour, not marked by striae.  Labial framework delicate, obscure, except for hexaradiate oral armature.  Stylet slender, 10 u long, with small but distinct knobs.  Nerve ring about one body width behind median bulb, encircling both intestine and esophageal gland ducts.  Excretory pore opposite nerve ring.  Esophageal glands extending about five body widths posterior to median bulb.  Anterior portion of intestine a slender tube crowded ventrally by esophageal gland lobes.  Ovary outstretched, the oocytes arranged in a single file.  Posterior uterine branch an elongated pouch serving as a reservoir for spermatazoa.  Tail tapering uniformly to an abruptly conoid, acute terminus.   Male tail slightly curved when relaxed, bearing three pairs of ventrosubmedian papillae.  First pair slightly postanal, second pair near middle of tail, and third pair near terminus.

Aphelenchoides fragariae is distinctive because of the very slightly set-off lip region, two lines in the lateral field, and tapering tail with abruptly conoid, pointed terminus.
(Description- Thorne, 1961)