I have never seen such termite like (kinds of) things

Yes, this is definitely Branchiodrilus and most likely hortensis. Recent genetic study showed that the distinction between the known Branchiodrilus species is not that easy and straightforward. However, European specimens are hortensis untill there is evidence showing otherwise

I fully suport the opinion of Dr. Ton van Haaren; together with attached articles I have no doubt that it's really a Branchiodrilid oligochet. The presence of such exotic species with far oriental origin in EU aquatic fauna raises again the qusestion about invasion, vectors of their distrubution an@d climate change...

Vielen Dank

Hello Prof. Roos,

Kindly look at this paper it has similarities with the photos

http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1870-34532019000101202

Dear Kiptim, the paper you recommended deals with completely another taxon group of Chaetogasters. The latin name hints you that you have ventral bundles of chaetes, but no anterior cutucle appendices with respiratory function. The species name also (Ch.langi) also gives info about epibiont life mode on aquatic snails.

This is obviously a Branchiodrilus species. To date, all European invasive forms of Branchiodrilus have been shown to belong to a single, well-characterised MOTU "M5" (sensu Martin et al., 2018), which includes specimens from South Korea and China. These specimens are usually identified as Branchriodrilus hortensis. Unfortunately, this species is not well defined morphologically so, without a reexamination of types or neotypes, we do not know actually what B. hortensis is, the reason why Martin et al. (2018) considered the species to be "species inquirenda". Fortunaly enough, the molecular identification of M5 is straightforward. So I advise you to either sequence some of your specimens or designate them as Branchiodrilus cf. hortensis, indicating with this "cf." abbreviation “that the identifier cannot be certain of the identity of the species until a more detailed comparison can be made, for example with some type or reference material, or to consult a taxonomic expert” (Horton et al. 2021: 10)

Horton, T., Marsh, L., Bett, B. J., Gates, A. R., Jones, D. O. B., Benoist, N. M. A., et al. (2021). Recommendations for the standardisation of open taxonomic nomenclature for image-based identifications. Frontiers in Marine Science, 8.