Summary
The larvae of the caddisfly Anabolia nervosa Curt. (Limnephilidae) possess 10 fields on the dorsal and ventral sides of the 3rd to 7th abdominal segments, which were formerly regarded as specialized sites of respiration. The epithelial fine structure and histochemical localization of chloride unequivocally show that the main function of these sites is the transport of electrolytes. They probably participate in osmoregulation by the absorption of salt. Therefore, these specialized areas of the hypodermis are termed chloride epithelia.
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Wichard, W., Komnick, H. Fine structure and function of the abdominal chloride epithelia in caddisfly larvae. Z.Zellforsch 136, 579–590 (1973). https://doi.org/10.1007/BF00307372
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DOI: https://doi.org/10.1007/BF00307372