Teratodiplogaster martini n. sp. and Parasitodiplogaster doliostoma n. sp. (Nematoda: Diplogastridae) from the syconia of Ficus species from Africa

Abstract

Teratodiplogaster martini n. sp. and Parasitodiplogaster doliostoma n. sp. are described and illustrated from voucher specimens from Ficus sp. and Ficus sur Forsskål, respectively, from Martin et al. (1973). Teratodiplogaster martini n. sp. is characterised by its scoop-like lip, long and slender body, presence of a receptaculum seminis and crustaformeria-like organ in female gonads, and eight pairs of male genital papillae with an arrangement of ⟨P1, P2, P3, C, P4d, P5, (P6, P7), P8d, Ph⟩, and is distinguished from its only congener, T. fignewmani, based upon its stomatal morphology, spicule and gubernaculum morphology, and composition and structure of the female reproductive organs. Parasitodiplogaster doliostoma n. sp. is characterised by its large barrel-shaped stoma comprised of a degenerate cheilostom, well developed gymnostom occupying most of the stoma, and short stegostom with two small triangular teeth, male tail possessing nine pairs of genital papillae with an arrangement of ⟨P1, P2 (P3, C), P4d, P5, (P6, P7, Ph, P8), P9d⟩ and spike-like projection at the distal tip, and conical and smoothly tapering female tail. These characters help to distinguish typologically this new species from all 13 nominal species in the genus. The emended genus definition of Parasitodiplogaster and morphological characters of the Koerneria/Parasitodiplogaster/Teratodiplogaster clade are also discussed.