Setopus tongiorgii
84 µm - 140 µm
Width:
26 µm - 40 µm
Width of the head ( five-lobed ):
25 µm - 38 µm
µm
Length of the furca:
Adhessive tubes (none):
Pharyx ( cylindrical ):
25 µm - 29 µm
Diameter of the mouth ( around ):
unknown
Dorsal scales:
Terminal spines with secondary apices on triangular scale rudiments; unequal in length (27-30 µm; 43-55 µm); numerous dorsolateral spines with secondary apices on scale rudiments; 21 per side.
Oecology:
rare; bog lake
Similar species:
S. chatticus : no scales and fewer shorter spines
Particularities:
scaled ventral interciliate field
Fundorte:
Setopus tongiorgii has been found so far only in Italy and some locations in Germany and is - like all Setopus species - relatively rare.
Overview with focus on the ring of eyelashes on the head (©️ Dr. Stephan Krall).
Transverse section; Rs: trunk spines; Cs: caudal spines (©️ Dr. Ole Riemann).
In the cross section the lateral spines with their secondary spike are well visible. Terminal are two caudal spines of unequal length, which also carry a secondary tip.
Scaling of the ventral intermediate field (©️ Dr. Ole Riemann).
Ventrally, the small, roundish scales and the keeled terminal plates of the ventral interciliar field can be seen. So far only in S. tongiorgii scales were found in this area. This feature is therefore of special importance for the diagnosis of the species.
(Balsamo, 1982)
(Kieneke und Riemann 2008)
(Kieneke, Martínez Arbizu, und Riemann 2008)