Seather, and Seatheria Jakson. These remained in the same tribe, and in the "Harnischia complex" (Şahin, 1984). Schadinia Lipina 1939 is being accepted as a junior synonym of Demicryptochironomus and it was entirely ignored in original descriptions (Yan et al., 2005). It resembles the species of the genera Cryptochironomus and Gillotia, owing to the double coloration in the dentalium of the labium plate, and the concave structure of the mentum originating from the protruding position of the lateral teeth in comparison with the median teeth. The numbers of the teeth on the labium plate for Cryptochironomus, Gillotia, and Demicryptochironomus are 5, 6, and 7, respectively. The antennae have 5, 6, and 7 articulations in parallel. It is a transitional form between the genera Gillotia, Cryptochironomus, and Demicryptochironomus (Şahin, 1984). Thirty-five species belonging to the genus Demicryptochironomus were described in the world, and among them, Demicryptochironomus vulneratus is a widely Abstract: Demicryptochironomus (Demicryptochironomus) vulneratus (Zetterstedt, 1838) was collected as a total of 4 individuals from the Garzan Brook, Batman Brook (Beşeri), and Tigris River (Hasankeyf) and recorded as a new chironomid larva species for the Turkish potamofauna. The species was identified morphologically under light microscope and photographed with a photomicroscope. In addition, the taxonomic features of the species were illustrated schematically with a scale.

Observing the changes of zooplanktonic organisms over the years can give us consistent information about the limnological conditions of the present and future. Our aim in this study was to determine current conditions of zooplankton fauna of Abant Lake, which was studied seasonally, and could provide resources for future studies. The samples of zooplankton were collected horizontally and vertically from Abant Lake seasonally, between 2015-2016 from seven stations. At the end of the study, a total of forty-nine zooplankton species were identified. Of these, 33 belonged to Rotifera, 14 to Cladocera and 2 to Copepoda. In addition, twelve species of Rotifera, and six species of Cladocera were found as new records for the Abant Lake.