Diagnosis: Animals about 10–11 mm long, eyes without pigmentation, appearing as two whitish spots. Animals bright green if zoochlorellae are present, otherwise they appear colourless. Male copulatory organ of the duplex-type IIB, the muscular septum appearing as a cone with its apex pointing towards the seminal vesicle when the cirrus is invaginated, and with its apex pointing towards the cirrus when evaginated. This cirrus can be surrounded with several cirruli that have the appearance of semi-circles (that are all capable of evagination). Size of these cirruli increasing from the distal end of the evaginated cirrus towards the proximal end where complex, dichotomously branched flaps with long finger-like branches occur (Fig. 12C: bf). Cirrus bearing 5–10 ?m-long spines. Male genital canal also with small spines (2 ?m) at its dorsal side. Female genital system (probably) of the UNIPUNCTATA-type. Intestinal bursa communicating with the gut without a burso-intestinal duct. Female genital canal long. The oviduct opens between the genito-bursal duct and the female genital canal.[From Houben AM, Van Steenkiste N, Artois TJ (2014): 340]
Notes from synonyms
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