Monocystis levinei, Bandyopadhyay & Bhowmik & Mitra, 2005

Bandyopadhyay, Probir Kumar, Bhowmik, Biplab & Mitra, Amlan Kumar, 2005, Observations on a new species of Monocystis Stein, 1848 (Protozoa: Apicomplexa: Monocystidae) Monocystis levinei sp. nov. from an Indian earthworm (Annelida: Oligochaeta) Eutyphoeus incommodus, Zootaxa 1016 (1), pp. 15-19 : 16-17

Monocystis levinei n.sp. ( Figs. 1–6 )

Phylum: Apicomplexa Levine, 1977

Order: Eugregarinida Leger, 1900

Family: Monocystidae Bütschli, 1882

Subfamily: Monocystinae Bhatia, 1930

Trophozoite elongated. Body appears to be differentiated into two parts. Anterior end of trophozoite is rounded and lobe­like that gradually tapers to a short deeply stained endosarc. The trophozoite’s endosarc consists of fine granular inclusions. Body wall thick. Posterior end of trophozoite contains a short tail­like structure. Nucleus with little chromatin. In almost 10% of the matured trophozoites, the nucleus was slightly ovoidal. Gametocyst with two unequal gametes. Oocysts navicular. Details of measurements and ratios of different body parts are summarized in Table 1.

1 2 3

4 5 6

Figures

FIGURES 1–3. Photomicrographs of different stages of life cycle of Monocystis levinei sp. nov. Fig1. Mature trophozoite; Fig. 2. Gametocyst; Fig. 3 Oocyst. Scale bars 100µm (Figs.1–2); 10µm (Fig. 3).

FIGURES 4–6. Camera lucida drawings of different stages of life cycle of Monocystis levinei sp. nov. Fig. 4. Mature trophozoite; Fig. 5. Gametocyst; Fig. 6. Oocyst