So far I have only found Drepanomonas dentata in the Simmelried. The species is not really common there, but I find it regularly. It is interesting to note that I find the specimens not only in the ponds, but also in tiny puddles that form in Sphagnum depressions, especially when some leaves have fallen there.

There are only a few records and descriptions of Drepanomonas dentata available, originating from Fresenius (1885), Penard (1922), Kahl (1935) and Kreutz (1998). Penard and Kahl state a length of 40–65 µm. In my population, however, the specimens were 70–95 µm long. The ciliate is crescent-shaped and swims slowly. It is already noticeable at low magnifications. The cortex is transparent with each two distinct ribs on the left and right side. The lateral margins are slightly protruding ventrally and form a spine in front on the left side and another one approximately in the middle of the body. There are no other spines. However, both the ribs and the dorsal edge of the body are finely dentated.

There are two vacuoles near the mouth opening. These are the contractile vacuole and a static vacuole. The static vacuole shows no pulsation. I was able to detect bacteria in this vacuole, which is why it could be a permanent digestive vacuole.