Qudsianematidae, Qudsianematinae.  Small nematodes, from 0.4 to 2.7 mm, but usually close to 1 mm.  Cuticle moderately thick, smooth.  Head more or less offset, rarely continuous with adjacent neck, lips separate.  Amphids stirrup-shaped.  Spear of middle length, 8 to 30 um, nearly as long as or somewhat (to 1.5 times) longer than cephalic diameter;  aperture 1/3 or 1/2 of spear length.  Guiding ring thin, single.  Oesophagus enlarged near middle.  Female gonads paired, vulva transverse, sclerotized. in 47-68% of body length.  Males fairly frequent.  Spicula dorylaimid, spermatozoa spindle-shaped.  Ventromedian supplements spaced, 3 to 16 (in most cases less than 10).  Percloacal space present.  Tails similar in both sexes, conoid-rounded or bluntly rounded, shorter or a little longer than anal body width, often with blister-like structures.
Type species:  Takamangai waenga Yeates, 1967
     Takamangai may be characterized by the combination of the following features:  lips simple, guiding ring thin, vulva transverse, supplements spaced and restricted in number, tail short and rounded.
     In 1974 Thorne suggested a new genus, Thonus, for short- and round-tailed representatives of "Eudorylaimus-like" nematodes.  The type species, Thonus nothus (Thorne & Swanger, 1936) Thorne, 1974 perfectly corresponds, however, to the criteria of Takamangai Yeates, 1967 so that we may not vacillate to synonymize the genus of Thorne with that of Yeates.
     Yeates has not mention the grammatic gender of the Maori word "Takamangai".  Since the type species, waenga (a Maori word as well) is terminating in an "-a" I consider it as feminin.
     The species of Takamangai are terrestrial in habit.  Although they occur throughout five continents, they predominantly inhabit the Palearctic.  Europe is represented by 10, Asia by 16, Africa by 3, North America by 12 and Australia by 2 species.  It is interesting that none of them has been recorded from South America hitherto.
(Description- Andrássy, 1991)

Species found:   at:

T. circulifera	Konza Prairie,	Haughton Crater,	Forensics
T. confusa	Konza Prairie
T. cylindricus	Konza Prairie,	Haughton Crater,	Forensics
T. elegans	Konza Prairie,	9-Mile Prairie
T. major	Konza Prairie
T. nothus	Konza Prairie
T. saccata	Konza Prairie,	Forensics,	South Dakota