Endoparasitic; body nearly spherical in adult with projecting neck tapering to head; posterior end rounded, or with slightly protruding perineal region. Head with one annule behind head cap, slightly wider than first body annule. Stylet slender, dorsally curved, knobs rounded. Excretory pore located about 3 stylet lengths posterior to head. Posterior cuticular pattern (= perineal pattern) round or oval to pear-shaped, dorsal arch varying from rounded, to moderate height, sometimes flattened dorsally. Striae smooth to wavy, tail tip often marked by an irregular whorl. Typically lateral fields well defined by a double incisure bordering a definite break in the striae clearly dividing pattern into dorsal and ventral sectors. Lateral fields may be visible for some distance from tail but do not extend into the neck region, or may be poorly marked. Phasmids usually distinct.Male
Head not offset; outline in lateral view characteristic with first annule projecting antero-laterally, well separated by constriction from a wider basal annule which may be subdivided into two annules either completely or partially (giving the appearance of one annule on one side of the body and two on the other). In dorsal or ventral view head outline rounded, amphidial apertures distinct. Stylet knobs rounded, not prominent. Valves of oesophageal bulb large. Oesophageal gland overlaps intestine for some distance ventrally. Excretory pore distinct, duct visible for some way along body. Hemizonid 0-4 annules anterior to pore. One testis or two. Intersexes common, displaying female characters to varying degrees ranging from a slight swelling anterior to cloaca to possession of a well developed vulva. Lateral field usually with 4 incisures ending at terminus or just anterior. Bands between incisures plain or outer ones sometimes areolated to some degree. Torsion of the posterior region of the body occurs to some extent making true lateral views of the tail hard to obtain. Tail shape somewhat variable, digitate in lateral view, bluntly rounded in ventral. Terminus not clearly striated. Phasmids located in lateral field at cloacal level or slightly anterior. Spicules slightly curved, with ventral flange distally, tips pointed. Gubernaculum thin, crescentic.
Endoparasitic; body nearly spherical in adult with projecting neck tapering to head; posterior end rounded, or with slightly protruding perineal region. Head with one annule behind head cap, slightly wider than first body annule. Stylet slender, dorsally curved, knobs rounded. Excretory pore located about 3 stylet lengths posterior to head. Posterior cuticular pattern (= perineal pattern) round or oval to pear-shaped, dorsal arch varying from rounded, to moderate height, sometimes flattened dorsally. Striae smooth to wavy, tail tip often marked by an irregular whorl. Typically lateral fields well defined by a double incisure bordering a definite break in the striae clearly dividing pattern into dorsal and ventral sectors. Lateral fields may be visible for some distance from tail but do not extend into the neck region, or may be poorly marked. Phasmids usually distinct.MaleHead not offset; outline in lateral view characteristic with first annule projecting antero-laterally, well separated by constriction from a wider basal annule which may be subdivided into two annules either completely or partially (giving the appearance of one annule on one side of the body and two on the other). In dorsal or ventral view head outline rounded, amphidial apertures distinct. Stylet knobs rounded, not prominent. Valves of oesophageal bulb large. Oesophageal gland overlaps intestine for some distance ventrally. Excretory pore distinct, duct visible for some way along body. Hemizonid 0-4 annules anterior to pore. One testis or two. Intersexes common, displaying female characters to varying degrees ranging from a slight swelling anterior to cloaca to possession of a well developed vulva. Lateral field usually with 4 incisures ending at terminus or just anterior. Bands between incisures plain or outer ones sometimes areolated to some degree. Torsion of the posterior region of the body occurs to some extent making true lateral views of the tail hard to obtain. Tail shape somewhat variable, digitate in lateral view, bluntly rounded in ventral. Terminus not clearly striated. Phasmids located in lateral field at cloacal level or slightly anterior. Spicules slightly curved, with ventral flange distally, tips pointed. Gubernaculum thin, crescentic.
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