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The African Carnoyidae (Nematoda: Rhigonematida). 5. Three new species of Brumptaemilius Dollfus, 1952 and remarks on B. seychellarum Adamson, 1987

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Three new species of the genus Brumptaemilius Dollfus, 1952 are described from the intestine of diplopods from Ghana and Ivory Coast. Brumptaemilius ultimus sp. n., from Ghana and Ivory Coast, is characterised by the huge spicules (731-894 μm long); numerous (105-136) transverse striae on the spicule shafts; the verrucose appearance of the tuberculate papillae; the blunt, peg-like spines on the posterior cloacal lip; the disposition and form of the rugosities; the very short male tail spike (0.3-0.5 times as long as the gubernaculum); lateral alae absent in both sexes and the exceptionally long female vagina. A spermatophore is apparently absent. B. verrucosus sp. n., from Ivory Coast, is characterised by relatively few tuberculate papillae with a minutely verrucose appearance; relatively long spicules (519-553 μm) with numerous (84-95) transverse striae; spicule shafts parallel and not wrapped around one another distally; gubernaculum 77-87 μm long; presence of subventral paracloacal fields of digitiform rugosities and male tail spike 0.6 (0.6-0.7) times as long as gubernaculum. In addition, the female lateral alae start in the isthmus region and terminate shortly before the anus, and a spermatophore is apparently absent, although a prominent copulatory plug was often seen occluding the vaginal lumen. Brumptaemilius ypoxystus sp. n., from Ivory Coast, is distinguished by features of the male copulatory apparatus and the area rugosa. It is characterised by having four staggered rows of subventral tuberculate papillae, each bearing a terminal corona of ca five to nine minute projections; a postcloacal field comprising transverse, imbricate rows of broad, conical spines; the form and disposition of the subventral fields of rugosities; rugose fields not extending as a ventral band anterior to the cloacal aperture; non-rugose ventral region on tail posterior to last pair of postcloacal papillae; spicules 306 (280-328) μm long with 40 (33-48) transverse striae; gubernaculum 102 (91-107) μm long; tail spike 0.5 (0.4-0.6) times as long as the gubernaculum; lateral alae absent in both sexes and presence of a spermatophore bearing a short peduncle penetrating the distal vagina. A population of B.seychellarum Adamson, 1987 is described from the Seychelles and the presence of a spermatophore recorded in the species for the first time. Useful characters for species diagnosis within the genus are briefly discussed.


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