Proalinopsis squamipes Hauer 1935
Proalinopsis squamipes; lateral view. The arrowhead points to the caudal papilla with one seta, which is very tiny in contrast to the caudal papilla of Proalinopsis caudatus. This species does not have a conspicuous red cerebral eyespot like P. caudatus, but a ring-like strcture associated with several ?droplets? (see insert) could be detected in the brain.
 
   
 
Proalinopsis squamipes; 4 aspects of the virgate trophi. Upper left: in contrast to the literature in this taxon only the right ramus has an alula; the left one is smooth (arrowheads). Upper right: This species has 5-6 teeth in the unci. Lower left: focus plane on the dents of the inner margins of the rami. Lower right: brightield image; focus plane on the manubria. Images not to scale. (1)
 
 
 
Location: Glörstraße near Glör-Talsperre, NRW, Germany (1) (click image to enlarge >>>)
Habitat: mucus between Cyanobacteria / algae
Date: 24.05.2021
 
 
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