Namalycastis Hartman, 1959

Bharathidasan, Veeraiyan, Sarathy, Palanivel Partha, Murugesan, Perumal & Nogueira, João Miguel De Matos, 2021, New records for associations between peritrich protozoan ciliates (Ciliophora, Sessilida) and polychaete worms (Annelida) from off the southeastern coast of India, Zootaxa 5071 (4), pp. 492-504 : 496

Genus Namalycastis Hartman, 1959

Diagnosis. Long body, usually with more than 150 chaetigers. Trapezoidal prostomium, with short subconical antennae, two pairs of eyes (eyes absent rarely). Four pairs of tentacular cirri. Dorsal cirri with cylindrical cirrophores on anterior body, and flattened cirrophores on posterior body. Notochaetae usually present; preacicular neurochaetae usually as heterogomph falcigers; postacicular neurochaetae, in most species, as sesquigomph spinigers in supraacicular fascicle and heterogomph spinigers in sub-acicular fascicle; pygidium button-like ( Fig. 3A ) ( Alves & Santos 2016).

Figures

FIGURE 3. Specimens of Epistylis sp.2 on Namalycastis abiuma. (A). Entire worm, dorsal view; (B). Colony of Epistylis sp.2 on parapodial dorsal cirrus; (C). Solitary Epistylis sp.2 on parapodial dorsal cirrus; (D). Premature juvenile Epistylis sp. 2, on parapodial ventral cirrus; most specimens measured along longitudinal axis. White arrow points to folds of the posterior region of zooid; yellow arrow points to projecting tube formed by constriction of the peristomial lip, red arrow points to macronucleus.