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Dero (Dero) obtusa; anterior end and typical chaetae: A photo of posterior end showing gill fossa (scale 250 µm) B outline drawing of A C drawing of typical dorsal chaetae bundle D drawing of typical ventral chaeta. |
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| Part of: Worsham MLD, Gibson R, Huffman DG (2016) The aquatic annelid fauna of the San Marcos River headsprings, Hays County, Texas. ZooKeys 618: 1-14. https://doi.org/10.3897/zookeys.618.8560 |