Protozoa Guide review

HEMISPEIRIDAE

family / THIGMOTRICHIDA / HEMISPEIRIDAE

Description

No thigmotactic sucker; oral cilia reduced ; 0Pk2 (at least), hook-like to strongly curved, looping behind the cytostome and, in the extreme , After completing a circle around the posterior pole; seven genera. 604 CILIOPHORA, b y (i> t;9 1. Oral area and 0Pk2 on ventral surface ; 0Pk2 making no more than 180° arc .. ...... ..... ........ .... .. . . . . . . .. . . . . .. . . . . . . . . . . . . . .. . .. . . . . . . . . . . .. 1'. Oral area and 0Pk2 in posterior ; 0Pk2 making more than 180° arc ..... ...... ...... ..... .......... ... .. ..... 2 2. Thigmotactic cilia in small field at anterior erx:l .. . . . .. . .. . . . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. 2' . Thigmotactic field not so separated ... ...... ..... ... .. 3 3. Somatic kineties form ing obvious suture anterior of oral area ...... ... .. ... .. ... .. Plagiospira 3' . Suture reg ion not as above ... ......... ...... ........ .... 4 4. 0Pk2 extending ventrally along posterior 1/3 of body before sp irall ing around posterior erx:l ..... .. . . .. . .. . . . . . . . . . . .. . . . . .. . .... . . . . .. . . . . .. . .. 4'. 0Pk2 making almost 360 ° arc , coiling around posterior end ..... ........... ...... .. ...... .... .... .. Boveria

Type species

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Raw text

No thigmotactic sucker; oral cilia reduced ; 0Pk2
(at least), hook-like to strongly curved, looping
behind the cytostome and, in the extreme ,
After completing a circle around the posterior pole;
seven genera.
604 CILIOPHORA,
b
y (i> t;9
1. Oral area and 0Pk2 on ventral surface ; 0Pk2
making no more than 180° arc .. ...... ..... ........ .... .. .
. . . . . .. . . . . .. . . . . . . . . . . . . . .. . .. . . . . . . . . . . ..
1'. Oral area and 0Pk2 in posterior ; 0Pk2 making
more than 180° arc ..... ...... ...... ..... .......... ... .. ..... 2
2. Thigmotactic cilia in small field at anterior erx:l .. .
. . .. . .. . . . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . ..
2' . Thigmotactic field not so separated ... ...... ..... ... .. 3
3. Somatic kineties form ing obvious suture
anterior of oral area ...... ... .. ... .. ... .. Plagiospira
3' . Suture reg ion not as above ... ......... ...... ........ .... 4
4. 0Pk2 extending ventrally along posterior 1/3 of
body before sp irall ing around posterior erx:l ..... ..
. . .. . .. . . . . . . . . . . .. . . . . .. . .... . . . . .. . . . . .. . ..
4'. 0Pk2 making almost 360 ° arc , coiling around
posterior end ..... ........... ...... .. ...... .... .... .. Boveria