Coxal gland

The coxal gland is a gland found in some arthropods, for collecting and excreting urine. They are found in all arachnids (with the exception of some Acari), and in other chelicerates, such as horseshoe crabs.[1] The coxal gland is thought to be homologous with the antennal gland of crustaceans.[2] The gland comprises an end sac (saccule), a long duct (labyrinth) and a terminal bladder (reservoir).[2] There is generally only one pair (two in some spiders), and they open on the coxae of the walking legs.[1]

References

  1. ↑ 1.0 1.1 Colin Little (1983). "Chelicerates". The Colonisation of Land: Origins and Adaptations of Terrestrial Animals. Cambridge University Press. pp. 106–126. ISBN 978-0-521-25218-8.
  2. ↑ 2.0 2.1 H. S. Bhamrah & Kavita Juneja (2002). "Scorpions". An Introduction to Arthropoda (2nd ed.). Anmol Publications. pp. 317–342. ISBN 978-81-261-0673-8.