Chaetonotus heideri - Emberton (1981: 95, Figs 1-2) ; Balsamo (1990: 173) ; Kisielewski (1991: 17, Tab. 3) ; Nesteruk (2004: 444, Tab. 1; 2007: 836, Tab. 1) ; Grilli et al.(2008: 174, Fig. h) .
Material.
Água Limpa: 1 specimen, Soberbo: 2 specimens, Preto River: 2 specimens.
Description.
The description is based on an adult specimen 137.5 μm in total length. Head with three lobes and two pairs of ciliary tufts. Pharynx 41 μm in length from the posterior edge of the mouth to pharyngo-intestinal junction, that is at U29. Anterior scales rounded and posterior ones pentagon-like shaped. Lateral spine denticle located near to the spine end.
Features Range N Literature data from Brazil Literature data from Europe Body length 137.5-137.96 µm 2 188-196 µm 106-220 µm Length of adhesive tube 25-38.8 µm 2 22-25 µm 21-32 µm Pharynx length 41 µm 2 48.5-50 µm 45-56 µm Diameter of mouth ring 7.55-10.62 µm 2 10-11.5 µm 10.5-13 µm Length of trunk spines 37.5-37.96 µm 2 22-37 µm 46-68 µm Length of egg 11 µm 1 - -
Distribution.
Brazil: Diamantina (Minas Gerais State), Juréia Ecological Reserve and São Carlos ( São Paulo State), Benevides ( Pará State); USA: Ohio; Germany; England; Italy; Poland; Romania; Russia; Czech Republic; Switzerland; France: Gironde.
