Description
characters of the family (Fig . 16). AMILY NYCTOTHERIDAE Amaro, 1972 ome begins at anterior end; no suture; no skeletal apparatus beneath rface; endosymbionts of invertebrates rates , particularly fish and anurans; ra. CILIOPHORA, INTRAMACRONUCLEATA, SEDIS MUTABILIS 1. At least one apical suture present. .. ..... ... ....... 2 1'. Apical sutures absent; symbiont of oligochaetes ... ... .... .. ....... ... .. . Pronyctotherus 2. Dorsal right apical suture and left caudal suture present. ............. ....... .... ... ................ .... 3 2'. Right apical suture not as above .... .... .... ....... .. 6 3. Left apical suture absent. .. .. ...... Nyctotherus 3' . Not as above ..... .. .. .... .. ... ........... .. .............. ..... 4. Peristome extending along much of ventral surface ; oral opening near posterior pole ; symbionts of anurans .................. Nyctositum 4' . Not as above .... .... ....... ........... ... .. .......... .. ... .... 5 . Peristome extends onto left lateral surface ; conspicuous right ventral postoral suture and left anterior preoral suture ; symbionts of anurans ... ......... ... ...... ..... ..... ... Pygmotheroides 5'. Pe ristome extends onto left anterior ventral surface ; median left apical suture ; symbionts of anurans ...... ....... .... .... ... ... ... ..... Nyctotheroides 6 . At least one caudal suture present ; symbionts of fish .. .. ............ ..... ... ...... ...... ..... ........ .. ..... 6' . Caudal sutures absent ; symbionts invertebrates and fish .... ..... Metanyctotherus 7. Short , median right apical suture ; short, dense kinetal segments insert on short , median left caudal suture ... .... ..... Paracichlidotherus 7' . Right apical suture absent ; no kinetal diffe rentiation in median left caudal suture ................ ... .. ....... .. .. .. ... . Cichlidotherus
Type species
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Raw text
characters of the family (Fig . 16). AMILY NYCTOTHERIDAE Amaro, 1972 ome begins at anterior end; no suture; no skeletal apparatus beneath rface; endosymbionts of invertebrates rates , particularly fish and anurans; ra. CILIOPHORA, INTRAMACRONUCLEATA, SEDIS MUTABILIS 1. At least one apical suture present. .. ..... ... ....... 2 1'. Apical sutures absent; symbiont of oligochaetes ... ... .... .. ....... ... .. . Pronyctotherus 2. Dorsal right apical suture and left caudal suture present. ............. ....... .... ... ................ .... 3 2'. Right apical suture not as above .... .... .... ....... .. 6 3. Left apical suture absent. .. .. ...... Nyctotherus 3' . Not as above ..... .. .. .... .. ... ........... .. .............. ..... 4. Peristome extending along much of ventral surface ; oral opening near posterior pole ; symbionts of anurans .................. Nyctositum 4' . Not as above .... .... ....... ........... ... .. .......... .. ... .... 5 . Peristome extends onto left lateral surface ; conspicuous right ventral postoral suture and left anterior preoral suture ; symbionts of anurans ... ......... ... ...... ..... ..... ... Pygmotheroides 5'. Pe ristome extends onto left anterior ventral surface ; median left apical suture ; symbionts of anurans ...... ....... .... .... ... ... ... ..... Nyctotheroides 6 . At least one caudal suture present ; symbionts of fish .. .. ............ ..... ... ...... ...... ..... ........ .. ..... 6' . Caudal sutures absent ; symbionts invertebrates and fish .... ..... Metanyctotherus 7. Short , median right apical suture ; short, dense kinetal segments insert on short , median left caudal suture ... .... ..... Paracichlidotherus 7' . Right apical suture absent ; no kinetal diffe rentiation in median left caudal suture ................ ... .. ....... .. .. .. ... . Cichlidotherus