[Two new species of fleas from Chile and Argentina(Insecta-Siphonaptera: Stephanocircidae and Rhopalopsyllidae) and raising of a new sub-genus of Plocopsylla Jordan, 1931]. / Deux puces nouvelles du Chili et d'Argentine (Insecta-Siphonaptera: Stephanocircidae et Rhopalopsyllidae) et érection d'un sous-genre chez Plocopsylla Jordan 1931.

A new subgenus of Plocopsylla is raised, Schrammapsylla Beaucournu and Ménier from the entire group B of Schramm & Lewis, 1988 and two new fleas from Chile and Argentina are described: Plocopsylla (S.) muruai n. sp. Beaucournu and Gallardo and Ectinorus (E.) mimacydis n. sp. Beaucournu and Gallardo. These two taxa are only known by the male sex.

[A new flea species of the genus Allopsylla Beaucournu et Fain, 1982 (Siphonaptera: Ischnopsyllidae) from Central African Republic, found on a little known molossid bat]. / Une nouvelle puce du genre Allopsylla Beaucournu et Fain, 1982 (Siphonaptera: Ischnopsyllidae) en Republique Centrafricaine, sur un chiroptère Molossidae méconnu.

A pair of Allopsylla lobayensis Beaucournu & Barrière, new species were collected the first of November 1999 in Ngotto forest, in the south-western part of the Lobaye basin, Central African Republic (CAR). The host specimen, a little known molossid bat (Myopterus whitleyi), constitutes the first record of this species in CAR. The new flea species appears taxonomically close to A. hetera Beaucournu & Fain, 1982, one of the two other Allopsylla species, previously know from other faunal regions (A. alloides in Nigeria and A. hetera in Democratic Republic of the Congo). The parasitism of three distinctly different hosts by the three known Allopsylla species raises questions regarding the host-parasite specificity of this group.

[The genus Ctenocephalides Stiles and Collins, 1930 (Siphonaptera, Pulicidae)]. / Le genre Ctenocephalides Stiles et Collins, 1930 (Siphonaptera, Pulicidae).

After a short historical review of this genus and an outline of biogeographical and paleontological origin of this flea, the 14 taxa are studied (synonymy, repartition, specificity and morphology). A new dichotomic key is given on criteria selected by the authors.

Taxonomic study of the genus Ctenocephalides Stiles & Collins, 1930 (Insecta: Siphonaptera: Pulicidae) by using aedeagus characters.

To define more accurately the taxonomic position of the species of Ctenocephalides Stiles & Collins, 1930 (Siphonaptera), a morphological study of the aedeagus was conducted an all taxa of this genus. Based on some phallosome structures (hamulus, lobes, tubus interior), an identification key is constructed to complement the existing taxonomic criteria. C. orientis and C. damarensis are confirmed to specific rank.