From ISTA 7-025 method:
A. besseyi is a bisexual nematode; females (0.62-0.88 mm) are usually longer than males (0.44-0.72 mm). The body is slender with lip region expanded, wider than neck at base of lips, stylet (spear) 10 μm long. Tail tapering conoid, armed with four mucronate points. Vulva typically postmedian, usually between 60% and 75% of the body length (EPPO, 2004).
