Abstract
AbstractMetacrobeles amblyurus n. sp. (Cephalobina, Cephaloboidea) is described from sand dunes of Death Valley, California, USA. It shares with other Metacrobeles species a far posterior vulva as well as five lateral lines but is distinguished from previously known species in having a blunt (vs more tapering) conical tail. Probolae of M. amblyurus n. sp. are low conical-rounded, adjacent lips are fused into three pairs, and guard processes are lacking. The very narrow vulva in M. amblyurus n. sp. appears to be plugged in adult females, and juveniles apparently hatch exclusively within the body of the dead mother. Type localities of the two previously known species of Metacrobeles are in western Africa and this is the first confirmed report of Metacrobeles from another continent.
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