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    Morphology and biology of a new species of Trochochaeta (Annelida: Spionidae) from India

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    Date
    2026
    Author
    Abdul Razaque, M. A.
    Abdul Jaleel, K. U.
    Radashevsky, V. I.
    Ragesh, S.
    Panda, N.
    Sukumaran, S.
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    Abstract
    A new species of spionid polychaete from the coastal waters of southwest India, Trochochaeta chakara sp. nov., is described and illustrated. Adults are common on Alappuzha mud banks (locally known as Chakara) off the coast of Kerala. They live in silty tubes in soft sediment and are characterized by the presence of two pairs of red eyes, caruncle extending to end of chaetiger 1, heavy falcate spines in neuropodia of chaetigers 2 and 3 (those in chaetiger 3 much stronger and darker), capillary chaetae in notopodia of chaetigers 1, 3–10, frayed heavy spines in neuropodia of chaetigers 4–13, hirsute capillaries in neuropodia from chaetiger 14, lateral interneuropodial membranes from chaetiger 14, one pair of ventral papillae on each chaetiger from chaetigers 14–16, bundles of acicular spines in notopodia from chaetigers 50–52, and small pygidium with up to six pairs of short cirri. This is the third species of Trochochaeta described and found in the Indian Ocean, including T. orissae (Fauvel, 1932) and T. cirrifera (Hartman, 1975).
    URI
    https://doi.org/10.1017/S0025315426101076
    http://drs.nio.res.in/drs/handle/2264/9626
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