A new species of Pseudachorutinae, Furculanurida emucronata sp. nov., is described from Lamto in the Ivory Coast. It differs from all known Pseudachorutinae species by the presence of a strong lateral tooth on the claw of leg I, and from other species of the genus Furculanurida by the absence of a mucro. It is provisionally assigned to the genus Furculanurida which is redefined accordingly. The heterogeneity of the genus is stressed, and its relationships with Arlesiella, Kenyura, Pseudachorutes and Stachorutes are discussed.
Willemia tondoh sp. nov. from the Ivory Coast (western Africa) is described and illustrated. The new species is the 14th in the buddenbrocki-group and is defined with two large globular sensilla placed in a cavity and covered in part by tegumental fold on antennal segment IV, 7 chaetae on antennal segment I, postantennal organ with 9 vesicles, s-chaetae subcylindrical and acuminate on abdominal terga and chaetae a1 absent on abdominal sternum IV. A phylogeny for all the 46 species of the genus Willemia is proposed. Based on the phylogentic framework, the biogeography of the buddenbrocki-group is discussed. An identification key for all 46 known species of the genus is provided.
The springtailMegalothorax laevisDenis, 1948 is redescribed from a broad sampling in the intertropical zone: Vietnam (including type locality), Ivory Coast, Gabon, Réunion island and French Guiana. Pseudopore-like elements are for the first time reported on the trunk and legs ofMegalothoraxspecies. New molecular data forM. laevis(16S rDNA, 28S rDNA d1 and d2 and COI Barcode) are provided. The phylogenetic position of the species within theMegalothoraxgenus is analysed.Megalothorax laevisbelongs to theincertusgroup but shares similitudes with theminimusgroup acquired through evolutionary convergences (such as smooth lamellae of the mucro). Those similitudes might have created confusion betweenM. minimusandM. laevis. WhileM. minimusused to be regarded cosmopolitan,M. laevishas been overlooked since its original discovery. However, the present sampling led us to believe thatM. laevisreplaceM. minimusas the commonest edaphicMegalothoraxspecies in the intertropical zone. A key to theMegalothoraxspecies with smooth mucro lamellae is provided.
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