Abstract
Two Xiphinema species occurring in South Africa are described as new. They display marked sexual dimorphism of the tail. In X. dimorphicaudatum n. sp. female resembles X. vanderlindei and has an elongate-conoid tail, while the male has a short tail with a peg. In X. variabile n. sp., of which the female resembles X. opisthohysterum, the female tail is likewise conoid and the male tail pegged, but the tail is shorter than in dimorphicaudatum, quite variable, usually shorter in the male than in the female, and the peg not always distinct. X. flagellicaudatum Luc, 1961, of which the male has hitherto been unknown, is redescribed and figured.
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