(Taylor, 1936) Loof & De Grisse, 1989
||Criconemoides sphaerocephalus Taylor, 1936
Macroposthonia sphaerocephala (Taylor, 1936) De
Grisse & Loof, 1965
Criconemella sphaerocephala (Taylor, 1936) Luc
& Raski, 1981
Criconemoides citri Steiner, 1949
Macroposthonia citri (Steiner, 1949) Siddiqi,
Criconemoides georgii Prasad, Khan & Mathur,
Macroposthonia georgii (Prasad, Khan & Mathur,
1966) Siddiqi, 1986
Length, 0.3 mm; a = 9-10. Tail rounded. Head of two
annules set off from body annules only by being narrower and rounded rather
than retrorse. Head contour rounded. Mouth opening minute.
Annules 68-72, difficult to count exactly as they "break joint" along lateral
line, forming a zig-zag line there. Anterior portion of oesophagus
not much swollen by spear muscles. Middle oesophageal bulb very large,
almost as wide as body cavity. Short isthmus surrounded by nerve
ring. Terminal bulb subglobular. Stylet 57um long, extending
through 14 annules, very stout. Stylet base more than 1/3 as wide
as neck, resting just in front of center of middle oesophageal bulb.
Anus at next to last annule. Conspicuous vulva at 4th or 5th annule
in front of terminus, opening often more or less gaping. Vagina about
half as long as body width. Size of egg 72u x 24u.
One egg completely filling uterus. Ovary cylindrical, then tapering,
with blind end somewhat behind base of oesophagus. Oocytes numerous,
irregularly arranged. Male unknown, none among 20 specimens.
Habitat: Soil around roots of a grass, Island of Trinidad,
British West Indies.
(Description- Taylor, 1936)