Tripyla affinis
de Man, 1880

Female, 1.32 - 1.42 mm; a =  25-26; b = 4.7 - 5.3; c = 6 - 6.8; V = 50 - 55
Male, 1.41 - 2.05 mm; a =  27 - 31; b = 5.3 - 5.6; c = 6.5 - 7.2
De Man (1884) gave 1.4 mm as the length in both sexes.  Cuticle rather thick, with transverse striations.  Body tapering a little in front and considerably in tail region.  On killing by heat, body nearly always curved ventrally.  Head region offset by a very slight narrowing of body with practically parallel sides. Anterior end almost flat. 3 circlets of head papillae, 16 - 20 in all, some papillae apical, others ventro-laterally directed.  Amphids very inconspicuous, located about halfway down head.  Stoma simple, only recognizable by the hyaline lining.  A small pointed tooth present on dorsal side at a distance about equal to width of head.  Oesophagus extending forward into head and blending imperceptibly with musculature surrounding stoma.  Oesophagus more or less cylindrical throughout; at junction with intestine 3 distinct, bi-lobed gland cells present.  One large egg at a time in uteri.  A club-shaped, uninucleate, ejaculatory gland cell present on either side of terminal region os vas deferens.  Spicules paired, simple, tapering gently from head to tip and enclosed in a muscular sheath.  A simple, rather inconspicuous gubernaculum present.  There is a mid-ventral row of 13-17 papillae extending from just in front of anus to the head region.  They are a little more than 1 body-width apart.  The male tail also bears 1 or 2 fine lateral or dorso-lateral papillae.  Caudal glands and terminal duct present in both sexes.
(Description- Raski & Luc, 1987)

DNA Sequences Obtained
Specimen: Collected:
KonzaI AB-112 Konza Prairie, First Survey
Konza IIAC-113 Konza Prairie, First Survey